R.F. -I.F. AMPLIFIERMODULES

"!580"±O'ClO:l

'±', O~

1--~8-.--,, 09I ', '---'

Oiml!:nsions in inchc:S

4 Tags 0'075 Q·Q1Qwidc: whichmcty be: bc:nt down for mounting

LPI155LPI157LPI158

1st 1. F.r.

~O OLUJ~ ~2nd t.F.T. 3rd LET, --f Clearance: hole: locations

, ....~==~==".:\===f=~n, to aCCEPt connl!ction t.C1gst- holc:s O'06010'055diQ..P~

3 ~ I~ 61,-', -,- '[OOO~;k

"_0 I

:f-J. gu: ~';:,

']'-=~"",=======~ ~ :t. ~:~~~~~ ~ .~f1-__",-,2,,-'::c'4=m,,0.oX~__ 'Co - .~".,o .~- "1'

Oscillator Fig.l _ .. _coil (T. P.)

These three modules arc similar to the 1. f. Module LP1l56 but include a long andmedium wave oscillator.' coil matched to specific tuning capacitors.The LP1l55 covers the band 540kHz to 1640kHz when used with an oscillator tuningcapacitance varying from 34 to 144pF'. The LP1l57 requires an oscillator tuningcapacitance of 4fi to 183pF and the L P1158 requires an oscillator tuning capacitanceof23tol03pF, for example the Mullard capacitor ACl033. T\vo stages of i.f. amp­lification using AF117 transistors and single tuned coils arc rrecoded by an AF1l5mixer and followed by OA9Q diode detector. Particular attention has been paid tor. f. filtering. The supply line is deeoupled within the module adjacent to the supplytag with further decouplingbetween the oscillator and mixer stages. The audio outputfrom the diode is filtered by a capacitor-resistor network.Connection to the module Is by means of eight tinned brass tags which may also beused to mount the module to a printed board.Four tags are also provided in the base of the can which "may be bent down and usedfor additional mounting.

NOVEMBER 1969 LP1155-Page 1

CIRCUIT

The circuit diagram of the module is shown in Fig.2. The numbered cOlUlections inthis diagram correspond to the tag numbers in Fig.I.

Audio

II II II 'I 14·7

lJ.kfl

17I'I I

I :I I

,9__________ ---l

Fig.2

Earth

Oscillator 2 1tuning o---"-t=_=_=-_=_=-_=-' _capacitor

,...--------------II ;;IIIII,,.,

Inp ut to <>0--'-<!HI'I-tmixer bose I

IIIII

J

CONNECTIONS

1.2. Oscillator section of tuning ga.ng::~. Earth4.5.

G. Input to mixer base7. -7 .6V supply8. Audio output9. Earth

PERFORMANCE

These figures are based on initial production and may be amended. They are basedon n supply voltage measured at the module of -7 ,GV.

a. Sensitivity: Input =2 .OJ.1V ± G.OdB at 1.0MHz for 50rnV audio output. The inputis modulated 3070 at 400Hz. The output is measured across a 4. 7kn load.

h. Bandwidth: 5.0kHz±1.OkHz at G.OdB attenuation.

c. Seledivity: Greater than 22dB at ±9.0kHz from centre frequency.

d. Consumption: Approx. :l.3mA.

LP1155-Page 2

R.F. -I.F. AMPLIFIERMODULE LP 1156

=

The Mullard LP 1156 i.t. module has been designed to have the widest possibleapplication in a.m. radio receivers. It consists of a mixer stage followed by two iJ.stages and as the oscillator coil ;s not included in the module, the user may makehis own choice of tuning components and frequency coverage.

The mixer stage uses an AF115 transistor and may De operated up to 13 Mc/s onoscillator fundamental or up to 26 Mc/s on second harmonic with suitableoscillator coils, tuning and coupling capacitors. Two stages of jJ. amplicationusing AF117 transistors and single tuned Lf. transformers are followed by anGA90 diode detector. Particular attention has been paid to r.~. filtering andscreening. The supply line is decoupled within the module adjacent to the supplytag with further decoupling between the oscillator and mixer stages. The" audiooutput from the diode is filtered by a capacitor resistor network and the wholeunit is enclosed in a metal box.

Connection to the module is by means of eight tinned brass tags which may alsobe used to mount the module to a printed board,

Four tags are also provided in the base of the can which may be bent down andused for additional mounting.

NOVEMBER 1969 Lp1l56 Page 1

---

DIt-1EHS10NS IN INCHES

-~:;-<~ - 4 TAGS O·~ ±0·010 WIDE WHICHMAY BE BENT DOWN FOR II«)UNTlNG.

Performance

These figures are based on initial production and may be amended. For the purpose ofthese tests, the mixer collector is joined to the primary tap of the first I.F.T. (tag 4 joinedto tag 1); the mixer emitter (tag 5) is decoupled to earth via a O'022IlF capacitor; theaudio output is measured across a 4·7Kil load; and the supply voltage is set to 7·6V.

(a) Sensitivity 2-411V ± 5dB at 470 Kc/s for 50mV output. The input is modulated30% at 400"-'

(b) Bandwidth 5·0 Kc/s ± 1·0 Kc/s at 6dB attenuation

(c) Selectivity Greater than 22dB at ± 9 Kc/s from centre frequency

(d) Consumption Approx. 3'3 mAo under no signal conditions

LP1156 Page 2

R.F. -I.F. DOUBLE TUNEDAMPLIFIER MODULE LPII59

The Mullard LP1159 is aiully screened transistoriaed l.f. amplifier and mixer stagedesigned to cover the short, medium and long wave bands using external oscillatorcoils, which allows the user maximum flexibility in the choice of wave bands andfrequency coverage.

The mixer stage uses an AF115 transistor which may be operated up to 13MHz onfundamental or 26MHz on second harmonic with suitable oscillator coils, tuning andcoupling capacitors.

This stage is coupled to the first of two Lf. amplifiers by means of a double tunedLf. transformer which achieves an adequate band width with extremely good skirtselectivity. In addition a damping diode is incorporated in this stage to extend theuseful a.g.c. range.

The two stages ofi .f. amplification using AF117 transistors are followed by an OA90diode detector from whieh the filtered audio output is derived.

Particular attention has been paid to r.f. filtering within the module, the supply linebeing decoupled adjacent to the supllly tag with further de~coupling for the mixer/oscillator stage. The audio output is filtered by a resistor capacitor network and thewhole unit is enclOSed in a metal screening box which 1s internally connected to thepositive line.

Connection to the module is by means of eighttiImed tags which may also be used tomOlUlt the module to a printed circuit board.

PERFORMANCE

L3j.lV:l:5dB

6.0 kHz

SensitiVity (at 470kHz for 50mV output.Input modulated 30% at 400Hz)

BandWidth (at --6dB) typ.

Selectivity (at ±9kHz from centre frequency) typo

A.G.C. range typo

Consumption approx.

30

58

3.3

dB

dB

rnA

NOT E For the purpose of these tests. tags 1. and 4 arc connected together and themixer emitter is connected to earth via a O.022,..F capacitor. The :ludiooutput is measured across a 4. 7kQ load.

NOVEMBER 1969 LP1l59 Page 1

ASSOCIATED CIRCUIT.

-AUdIo

•

r- _oJ: =..:"_-.=_"::.::.::.e;;,...:::=::.::. ==-_""l.. - -,I ! 7~v:.,

OUTlJNE AND DIMENSIONS

4 tags 0075±OO10 wldo whIch maybe bent down for mounting

1--"560 ± 0005---J

•0·64max.t

lstLF.T. 2ndI.F.T. 3rdI.F.T.

,I.

;"'9;c====+=r=n3 1.192 max.

OO~4max.dlDimensIons In inches

CJearanclZ hollZ locations to acclZpt connection tags8 holes 0·060/0·05!5 dIe. postlon tolerance 0·003 dio.

0·750 ",..(T-R) -+S -- - -- 6 4 rr- ~ I 0·'50 (}900

O.GOOL (T.P.) (T-R)(T-R) r, 7t~ L

0'300t -- --=if(T-R) 2·450 -I' IB71'771

nR)Tlte Inue of tile lnformnlon contained In this publication docs nat Implyany authority or IIcenoe for the utilisation of any patented feuu .....

LP1l59 Page 2

I. F. MODULES LPI164LPII6S

Fully screened intermediate frequency modules for amplification and detection ofLm. signals at 10. 7MHz and a.m. signals at 470kHz. The first stage is used as ani.f. amplifier for Lm. and a self-oscUlating mixer for a.m. operation, in conjunc-tion with an external oscillator coil.

LPll64 LP1l65 ~

Supply voltage 9.5 7.0 V

Supply current (approx.) 7.0 3.5 rnA

A.M. operation

Typical sensitivity for50mVoutput 1.0 1.3 MV

-6c1B bandwidth 6.5 6.5 kHz

Attenuation at ::I: 9kHz 30 30 dB

F. M. operation

Typical sensitivity for30mVoutput 120 240 MV

A. F. output at limiting 150 75 mV

-3dB bandwidth 300 300 kHz

Attenuation at ± 300kHz 35 35 dB

Further details may be obtained from the Consumer Electronics DivisIon.

DECEMBER 1969 LPll64/65 Page 1

R.F. -I.F. AMPLIFIERMODULE LPII66

The Mullard LP1l66 is a fully screened transistorised Lf: amplifier and mixerstage designed to cover the flhort, medium and long' wave -bands using externaloscillator coils. The circuit connections have been arranged so that either inductivelycoupled or Colpitts 05c111ator circuits maybe employed, thus allowing the user mnx­imwn flexibility in the choice of tuning components.

The mixer stage uses an AFl15 transistor which may be operated up to l:mfHz onflmrlamental or 26MHz on second harmonic with suitable oscillator coils, ttuling andcoupling capacitors. Two stages of i.f. amplification using AFl17 transistors andsingle tuned i.f. transformers are followed by an QAnO diode detector.

Particular attention hl.ls been paid to r.f. filtering within the module, the supply linebein~ decoupled adjacent to the supply tag with further decoupling for the mixer/oscillator stage. The audio output is fntercd by a resistor capacitor network andthe whole unit is enclosed in a metal box which may be connected to any suitablepoint of low r .f. potential.

Connection to the module is by means of eight tinned tags which may also be used tomount the module to n printed board.

PERFORMANCE

2.0IlV:l: 5dB

5.0::1:1.0 kHz

Sensitivity (at 470kHz for 50mV output.Input modulated 30% at 400Hz)

Bandwidth (at -OdB)

SelectiVity (at ::I:9kHz from centre frequency)

Consumption, approx.

>22

3.3

dB

rnA

NOTE For the purpose of these tests the top cnd of the first i.f. transformer primaryis connected to decoupled supply line and the mixer emittcr is decoupled totag 6 viaa 0 .0221lF capacitor. The audio output is measured across a 4. 7kOload.

NOVEMBER 1969 LP1166 Page 1

OUTLINE AND DIMENSIONS

:4 tags Q·Q75±0010 wlda whld;l maybe bt2nt down for maunllng

~olstI.F.T.

~0"2 o.L

. min. max.a _L*_L+

----.2ndI.F.T. 3rdlF.l.

~ r14 1.19

;-:'-==~~~~~~~~}~ T1••----~44max.---~

Dimensions in Inches

ClearancQ: hole locations to acc12pt connt2ction tags

O8 holl1:s 0060 I 0·055 dla. postlon tolerance 0003 dla

0·75 ".-l1R) ~-- - --- - 9 4 r

~~ I 0150 0900

0'6001.- I,e) l1e)

(,e) -!J == === 4 -.l L~ r0·300

I,Rl 2-450 _I,Rl

LP1166 Page 2

R.F. -I.F. AMPLIFIERMODULE

ASSOCIATED CIRCUITS

LPII66

,-----------,r----'<-+I-;--~~---------_r-<-7·611

,"r--------

For usc with inductively coupled oscillator circuits

•,,

•••.,.,,,,

IIIII •

-I +

Audio

<11"7 k ...

,--------------l.r-'o---;--r-_~~----------___jr--07-7·6 v

I

________ -1 +,~---

•IIII

I '

,,I

,j,...

For use with Colpitts type oscillator circuits

Tile i,sue of the Information contained In thll publication doft. not Implyany luthorlty or licence for the utillntlon of any puented feature.

LP1166 Page 3

F.M. TUNERMODULE

F. M. tuner module using silicon transistors, having a tuningcapacitor incorporating a. m. sections I and intended for usewith the LPl164, LP1165 and LPl171 a.m./Lm. modules.

LP II 69

QUICK REFERENCE DATA

Supply voltage (nominal) 6.8 vFrequency range

Power gain

DESIGN DATA

87.4 to 108

30

MHz

dB

Negative supply voltage (nominal)(maximum)

Supply current

Aerial impedances

I. F.

Output impedance

A.F.e. at lOOMHz

A. F. C. centre voltage

A. F. C. polarity

6.8 V7.8 V

3.5 rnA

75 and 300 "10.7 MHz

75 "200 kHz/V

-6.8 V

positive going voltage changedecreases oscillator frequency

A.F.e. voltage range (maximum)

NOVEMBER 1969

'2 V

LP1169 Page 1

DESIGN DATA (cont'd)

A. M, capacitor (both sections are identical)

C min. (maximum)

Capacitance swing

Minimum trimmer swing

PERFORMANCE

9

280

9

pF

pF

pF

Measured with supply voltage of 6.8V and load impedance of 470Q

Frequency range (see note 1) 87.4 to 108 rVllIz

1. F.

Bandwidth to -3dB points

Power gain (measured at 100MHz) (typ.)(min.)

Total gain variation over complete tuning range (max.)

Noise factor at 100MHz (75Q source) (max,)

Image suppression (at 100MHz wanted signal) (nom.)

I. F. rejection (at 100MHz wanted signal) (nom.)

The oscillator will function at supply voltages

Oscillator stability (worst case)

with respect to supply voltage, a.Lc. disconnected

with respect to temperature, a.Lc. disconnected

NOTE

lO,7MHz:l:50kHz

350 kHz

30 dB26 dB

8 dB

8 dB

36 dB

54 dB

>4.5 V

50 kHz/V

20 kHz/degC

1. Setting accuracy ±O. 2MHz at 87.4MHz, and ±O. 5lVIHz at 108MHz.

MECHANICAL DATA

Maximum torque on drive spindle

Reduction gear (antibacklush type)

10

u.3:1

gm

Drive shaft, 25mm long by 6mm diameter. Mounting is effected by means of threeself-tapping screws, No.2 type B to B.S. 4174.

LP1169 Page 2

F.M. TUNERMODULE

LP II 69

OUTLINE, DIMENSIONS AND CONNECTIONS

38I--I-$- ---+Eff. +-$J-/~-'max

.L,J;:=~~_13 holu 1·9mln, d==Ja.forself topping screws

1----- 82 max

15·114·9

8·3

f20·3

I

4

All dimensionsIn millimetres

5

4 holes 4·9 min LJ...l--4.5(x2)

View In direction of arrow A

300 J"l. Input

75 fl Input

75 & 300 .n. Input-6-8 V Supply

,.2.3

4.-

6548 7

9

5. Output

10 6. - Output (earth)

7. - Positive sUPPly & canA.M. oscillator 8. - A.F. C.

trlmmu A.M. aerialtrimmer 9. - A.M. oscillator capacitor

• 10. - A.M. aerial capacitor

LP1169!1 and LPllG9!2 differ from LP1l69 only In the pasHlon of the tuning shaft.

Type No Position of spindle

LP1l69 a

LP1l69/1 b

LPIIG9/2 c

LP1l69 Page;]

A.M./F.M. I.F. AMPLIFIERMODULE LPII71

I.F. amplifier module including an a.m. oscillator coil. This unit is primarilyintended for usc in conjunction with the LP1l69 f.m. tuner module.

QUICK REFERENCE DATA

470:1:2 kHzlO.7MHz:l:50kHz

SUpply voltage (nominal)

A.M. i.£.

F,M. Lf.

DESIGN DATA

Positive supply voltage (nominal)(maximum)

Supply current (no signal)

I.F. (a.m.)(!.m.)

A,M. OPERATION

Optimwn aerial source impedance200kHzlMHz

Oscillator coil inductance (nominal)

7

470

10.7

78

3.5

2500

170

V

kHz

MHz

vV

rnA

When this module is used in conjunction with the tuner module LP1169, the mediwnwave tuning range is achieved with a padding capacitor of 270pF connected betweenthe oscillator coil and the oscillator section of the tuning capacitor~Band-switchingarrangements should include means of connecting a lOOkn damping resistor acrossthe oscillator coil on m. w. only.

NOVEMBEU 1969 LPl171 Page 1

F.M. OPERATION

50 to 2GO Q

470 Q

input frequency riseproduces positive goingchange in a.i.c. voltage

o V600mV per 100kHz

I. F. source impedance rangeInput impedanceA. F. C. output polarity

A.F.e. eentre voltageA. F. e. sensitivity

Audio load impedance (total)(a.m.) max.

min.(f. Ill.) min.

102.52.5

!illkO!ill

PERFORMANCE

Measured with supply voltage of 7V and load impedance of 4. 7~.

A.M.

Bandwidth to -6dB pointsselectivity at ±!JkHzSenSitivity for 50mV output, 30% modulated

m.W. ,1MHz1. w., 200kHz

A.G.C.

6.5 kHz30 dB

llJV ± 6dB1. 5ftV ± 6dB

10 dB,,4 V

300 kHz35 dB

240IJV ± 8dB

40 dB

Typically 6dB output change for 60dB input changeSignal to noise ratio

(lMHz, 30% modulated, 1. 5IJV input)Thc oscillator will fWlction at supply voltage

Bandwidth to -3dB pointsSelectivity at ±300kHzSensitivity for 30mV output, 22. 5kHz deviationSignal to noise ratio

(240J1V input, 22. 5kHz deViation)

A.M. rejection

Measured with a 10. 7MHz carrier of 5mV amplitude, simultaneously modulated to30% at ll{Hz, and deviated to 22. 5kHz at 400Hz. A.M. output typically 36dB belowf. m. level.

F.M.

Audio output at limiting(5mV input, 22. 5kHz deviation at 400Hz)(With load of lOOkn)

75120

mVmV

LPl171 Page 2

A.M./F.M. I.F. AMPLIFIERMODULE

OUTLINE AND DIMENSIONS

LP 1171

All dim¢n~ion5 in mm

~---e2'1mQl( ----l6f:r--..,--------d.,."O----Cr

1e • "!5 '124 41'2 max

~ l:.L O -Ju:USlob to pr-OVi<lOl 4 togs 5-2 mm long and 1'6!5mm wide

may be bent ov'·!" for mounting

! '20mo:K

------ --~.'m;"0"dja~L

0,

dO 0'* 0"

0'

o 0m

COIUlCctions

00 bO cO fa 09

1.2.3.4.5.

15.6.

10.11.12.13.14.

Signal inputTrl collectorF,M, coil, earthy endEarthEmitter Trl, via capacitorOscillator coil primaryA,M, coil and damping diodeEarthF. M. outputA.F. C. outputPositive supplyA.M, output

a. A.M. oscillator coilb. A.M. 1st Lf. primaryc. A.M. 1st 1. r. secondaryd. F .M. 2nd i.f. primarye. F.M, 2nd Lf. secondaryf. F.M. 3rd i.£. primaryg. F.M, 3rd l.f. secondaryh. A. M. 2nd i. f.k. A. M. 3rd i. f.ill. Ratto detectorn. Ratio detectorp.

R¢cnMmllnded p,.inted wiring E!loard Pililrcing Diagram

-.----.--,"";;;'.'3-',~·"t=----:~5,.~?-I_--'-j!,--lr--.---115-2.4.-- I, :'3-81 30

l··6

12 ::::: '2m;" ,;,==1 _: ~ ,~~-=====2=6~·t=7=~-.J29

LPl171 Page 3

AUDIO MODULE LPI173~

QUICK REFERENGE DATA

Audio amplifier module intended for use in mains operated radio receivers andradiograms.

Output power. nomlnal

Supply voltage

Load impedance (see note 1),

10

+24

4

wvo

DIMENSIONS

;rinted circuit board

:..i....L.,....lIf I 8.5max

.. ..! t2 fIXing holesIII 4

1-------,__95.'5 --194,95

I16.5

t

0120

I23.7

I

d

.--.--_. -=~~~==~==;==f~._._._.- f f• t

.~.__ .__ .

11 connecting pinsIII 0.8 (21 sw.g.l

1----94 .5. ' L913

mox 6.79.0 8.57.'5 7.0

70.1max

Heatsink1.6 (16 s.w.g)

All dimensions in mm

Dimension • b c d • f

millimetrcs 5.08 35.56 40.64 45.72 50.8 55.88

inches 0.2 1.4 1.6 1.8 2 2.2

,WLY 1969Mullard------

LP1l73 Page 1

v

MOUNTING

Vertically: there .are two 4mm holes, 95. 55mm (max.) apart, on the module flangefor this purpose, ,

ELECTRICAL DATA (typical values unless otherwise stated)

Design

Supply voltage (absolute maximum)

Supply voltage

Supply current, lOW outputno signal'

Load impedance (sec note 1) .

Input impedance

Input voltage, lOW output, 4. 7kU source impedance

Temperature ratings

storagemaximum ambient

+24

77068

4

40

130

-40 to +7045

vrnArnA

"kg

mV

Note 1. The load impedance must be arranged to appear essentially resistive, bymeans of a Zobel network. This consists of a capacitor and resistor combina­tion, the value of the resistor being eql!al to the loudspeaker resistance, andthe capacitor value being determined by

C ""..h.R

2

where L is the loudspeaker inductance and R is its resistance. This networkshould be connected between pins 2 and 6.

Performance

Frequency response

O.5Woutput, to -3dB points

Total harmonic distortion

at 1kHz and 0.5Wat 1kHz and lOW

50Hz to 16kHz

0.22

%%

The voltage sensitivity of the module can be increased by connection of aresistor between pins 13 and 14, but this reduces the negative feedback; thusthe frequency response will be reduced and the distorti0IJ increased.

HANDLING NOTES

,(a) The module may be soldered directly into circuit using a soJdering iron, or solderbath, provided that the iron or solder temperature is below 2450C, and the solderingtime is less than 5 seconds.

(b) Care should be taken when bending pins that the printed circuit is not damaged.

(c) All soldering irons and signal supplies should be earthed to prevent breakdown ofthe transistors.

(d) Care must be taken to avoid a short circuit occurring across the output terminals,as this could cause permanent damage to the output transistors and associatedresistors through excess dissipation.

MullardLP1l73 Page 2

AUDIO MODULE

CONNECTIONS

LPI173

1­

.2-

-7-8-9-10-11

5- -1)

6-·~~~~~;;;;;;;;;;;;;;~d-14

Pin No.

1. Power supply positive input

2. Zobel network connection point

5. Audio output

6. Negative supply and audiooutput (earthy)

7. Power supply 'positive output

Remarks

8. }9. Tone control feedback resistors

10.

11. Audio input

13. Emitter end of feedback resistor

14, Input earth and negative supply

The heatsink is isolated electrically and would usually be connected to the supplynegative. However, in some applications, it may be advantageous to leave it'floating.', or to connect it to the supply positive.

/

Mullard------LP1l73 Page 3

VOLTAGE MULTIPLYINGMODULES

LP 1174Series

AVAILABLE FOR CUHBENT PRODUCTION; NOT INTENDED FOR NEW DESIGNS

QUICK HEFERENCE DATA

The modules j:{enerate e. h. t. and focus voltage from line 'output pulses tosupply colour picture tubes. To be used in conjunction with AT2055 or AT205Gline output transformers.

, (peak-tn-peak) 8. 7 kVin

VOlIi (c,h.L supply) (d. c.) 25 kV

V (foell!'! supply) (d. c.) .7 kvout

I (c.h.t. supply) (average) rnAoul

I (fOCIl8 supply) (averu((c) 100 "Aout

MOUNTING PHECAUTIONS

A separation of at least 15mm between any part of the main module body or its leadsand any metal parts of the receiver is essential to 'avoid any capacitive dischargecurrent and detuoingeffecls of the line output transformer. Mounting brackets mustbe confined to the module mountinK flanges.

TYPE 'NUMBER DF.SIGNATION

The LPII 74/10, /20, /30 are basedon five silicon rectifier diodes and four capacitors,In a cascade circuit to achieve 25kV output, and are suitable for tube applications.Types LPl17'\o/ZO and LP1174/30 are suitable for transistor applications. For circuitdiagrams, sec page 3.

MAy 1972Mullard

LPl174 Series Page 1

Lead length

0- 43

CASE AND TERMINATIONS

The modules are encapsulated in a flame retardant plastic case. Connections areby means of four flying leads, as shown below I and are flame retardant to lEe 197.

Lead No. input 15 em

Lead No. 2 earth 15 cm

Lead No. 3 focus voltage 15 crn

Lead No. 4 e.h.i.ouiput 60 em

DIMENSIONS (millimetreS)

~-'73 40.2 43 0

max. 39.8 .

j L~H-'t=,=,-'-----_---I::-~tJ,19.8

-----.:1

II----·_95.,~. I94.8

••-------110max.------....

;r-==;~~=~03=4~o:;;=I-~::r=9J A,(.L--*_ltO~6 1

f T1+- 84.7 j 0.236

84.3

ELECTRICAL DATA

Typical operation conditions

v in (peak-to-peak) (see noie 1)

Vout

(e.h.t. supply) (d.c.)

Vout

(focus supply) (d. c.)

lout (e.h.L supply)

lout (focus supply)

E. H. T. regulation (0 to 1. 5mA)

Mullard

8. 7 kV

'5 kV

7. 7 kV

rnA

100 "A.3 Me

LP1174 Series Page 2

VOLTAGE MULTIPLYINGMODULES

ELECTRICAL DATA (contd)

LPII74Series

Limiting values - these are the absolute operating limits which must not be exceededunder any conditions. '

v. (peak-ta-peak) 10. 5 kV

'"Vout

(c.h.t. supply) (d c.) (Bee note 2) 31 kV

I (e.h.t. + focus) 2 rnAout

Tamb

60 DC

NOTES

1. Maximum pulse duration 18% of one cycle.

2. This docs not imply that th~ voltage ratinp; for the final anode of thepicturetubemay be exceeded.

CIRCUIT DIAGRAMS

lP11741lQ LP1174f20

4 ""U'Q

lP1174/3Q

Surge limitingresistof

Mullard

0.2l1.

LP1l74 Series Pap;e 3

CIRCUIT DlAGHAMS (contd)

1. When uSing the LP1174!1O module, a 470S-1 surge limiting resistor capable, ofwithstanding high voltage must be connected in !:leries with lead number 2.

2. ,"'hen uSing the LP1174!20 module, a 47k11 resistor capable of withstanding highvoltage must be connected In series with the e. h. t. output lead 4 .

3. LP1174!aO incorporates a surge limiting resistor.

APPLlCA nON CIRCUITS

Linearity contral

Piclultlube

~....,.-'-j LP1171.130 1-'-----0

ly

~Il.l ,"ppll" ---t+--+8K+-----.~

,1

"F

',F

"'0kn

820kO

v

v

1..7 Mil

E29BZZ/10JFOCU5

t..7Mfi

Picturetube

L.7Mfi

E29BZZ/l03Focus

0<111

Mullard------LP1174 Series Page 4

R.F. -I.F. AMPLIFIERMODULES

"!580"±O'ClO:l

'±', O~

1--~8-.--,, 09I ', '---'

Oiml!:nsions in inchc:S

4 Tags 0'075 Q·Q1Qwidc: whichmcty be: bc:nt down for mounting

LPI155LPI157LPI158

1st 1. F.r.

~O OLUJ~ ~2nd t.F.T. 3rd LET, --f Clearance: hole: locations

, ....~==~==".:\===f=~n, to aCCEPt connl!ction t.C1gst- holc:s O'06010'055diQ..P~

3 ~ I~ 61,-', -,- '[OOO~;k

"_0 I

:f-J. gu: ~';:,

']'-=~"",=======~ ~ :t. ~:~~~~~ ~ .~f1-__",-,2,,-'::c'4=m,,0.oX~__ 'Co - .~".,o .~- "1'

Oscillator Fig.l _ .. _coil (T. P.)

These three modules arc similar to the 1. f. Module LP1l56 but include a long andmedium wave oscillator.' coil matched to specific tuning capacitors.The LP1l55 covers the band 540kHz to 1640kHz when used with an oscillator tuningcapacitance varying from 34 to 144pF'. The LP1l57 requires an oscillator tuningcapacitance of 4fi to 183pF and the L P1158 requires an oscillator tuning capacitanceof23tol03pF, for example the Mullard capacitor ACl033. T\vo stages of i.f. amp­lification using AF117 transistors and single tuned coils arc rrecoded by an AF1l5mixer and followed by OA9Q diode detector. Particular attention has been paid tor. f. filtering. The supply line is deeoupled within the module adjacent to the supplytag with further decouplingbetween the oscillator and mixer stages. The audio outputfrom the diode is filtered by a capacitor-resistor network.Connection to the module Is by means of eight tinned brass tags which may also beused to mount the module to a printed board.Four tags are also provided in the base of the can which "may be bent down and usedfor additional mounting.

NOVEMBER 1969 LP1155-Page 1

CIRCUIT

The circuit diagram of the module is shown in Fig.2. The numbered cOlUlections inthis diagram correspond to the tag numbers in Fig.I.

Audio

II II II 'I 14·7

lJ.kfl

17I'I I

I :I I

,9__________ ---l

Fig.2

Earth

Oscillator 2 1tuning o---"-t=_=_=-_=_=-_=-' _capacitor

,...--------------II ;;IIIII,,.,

Inp ut to <>0--'-<!HI'I-tmixer bose I

IIIII

J

CONNECTIONS

1.2. Oscillator section of tuning ga.ng::~. Earth4.5.

G. Input to mixer base7. -7 .6V supply8. Audio output9. Earth

PERFORMANCE

These figures are based on initial production and may be amended. They are basedon n supply voltage measured at the module of -7 ,GV.

a. Sensitivity: Input =2 .OJ.1V ± G.OdB at 1.0MHz for 50rnV audio output. The inputis modulated 3070 at 400Hz. The output is measured across a 4. 7kn load.

h. Bandwidth: 5.0kHz±1.OkHz at G.OdB attenuation.

c. Seledivity: Greater than 22dB at ±9.0kHz from centre frequency.

d. Consumption: Approx. :l.3mA.

LP1155-Page 2

R.F. -I.F. AMPLIFIERMODULE LP 1156

=

The Mullard LP 1156 i.t. module has been designed to have the widest possibleapplication in a.m. radio receivers. It consists of a mixer stage followed by two iJ.stages and as the oscillator coil ;s not included in the module, the user may makehis own choice of tuning components and frequency coverage.

The mixer stage uses an AF115 transistor and may De operated up to 13 Mc/s onoscillator fundamental or up to 26 Mc/s on second harmonic with suitableoscillator coils, tuning and coupling capacitors. Two stages of jJ. amplicationusing AF117 transistors and single tuned Lf. transformers are followed by anGA90 diode detector. Particular attention has been paid to r.~. filtering andscreening. The supply line is decoupled within the module adjacent to the supplytag with further decoupling between the oscillator and mixer stages. The" audiooutput from the diode is filtered by a capacitor resistor network and the wholeunit is enclosed in a metal box.

Connection to the module is by means of eight tinned brass tags which may alsobe used to mount the module to a printed board,

Four tags are also provided in the base of the can which may be bent down andused for additional mounting.

NOVEMBER 1969 Lp1l56 Page 1

---

DIt-1EHS10NS IN INCHES

-~:;-<~ - 4 TAGS O·~ ±0·010 WIDE WHICHMAY BE BENT DOWN FOR II«)UNTlNG.

Performance

These figures are based on initial production and may be amended. For the purpose ofthese tests, the mixer collector is joined to the primary tap of the first I.F.T. (tag 4 joinedto tag 1); the mixer emitter (tag 5) is decoupled to earth via a O'022IlF capacitor; theaudio output is measured across a 4·7Kil load; and the supply voltage is set to 7·6V.

(a) Sensitivity 2-411V ± 5dB at 470 Kc/s for 50mV output. The input is modulated30% at 400"-'

(b) Bandwidth 5·0 Kc/s ± 1·0 Kc/s at 6dB attenuation

(c) Selectivity Greater than 22dB at ± 9 Kc/s from centre frequency

(d) Consumption Approx. 3'3 mAo under no signal conditions

LP1156 Page 2

R.F. -I.F. DOUBLE TUNEDAMPLIFIER MODULE LPII59

The Mullard LP1159 is aiully screened transistoriaed l.f. amplifier and mixer stagedesigned to cover the short, medium and long wave bands using external oscillatorcoils, which allows the user maximum flexibility in the choice of wave bands andfrequency coverage.

The mixer stage uses an AF115 transistor which may be operated up to 13MHz onfundamental or 26MHz on second harmonic with suitable oscillator coils, tuning andcoupling capacitors.

This stage is coupled to the first of two Lf. amplifiers by means of a double tunedLf. transformer which achieves an adequate band width with extremely good skirtselectivity. In addition a damping diode is incorporated in this stage to extend theuseful a.g.c. range.

The two stages ofi .f. amplification using AF117 transistors are followed by an OA90diode detector from whieh the filtered audio output is derived.

Particular attention has been paid to r.f. filtering within the module, the supply linebeing decoupled adjacent to the sUPllly tag with further de~coupling for the mixer/oscillator stage. The audio output is filtered by a resistor capacitor network and thewhole unit is enclOSed in a metal screening box which 1s internally connected to thepositive line.

Connection to the module is by means of eighttiImed tags which may also be used tomOlUlt the module to a printed circuit board.

PERFORMANCE

L3j.lV:l:5dB

6.0 kHz

SensitiVity (at 470kHz for 50mV output.Input modulated 30% at 400Hz)

Bandwidth (at --6dB) typ.

Selectivity (at ±9kHz from centre frequency) typo

A.G.C. range typo

Consumption approx.

30

58

3.3

dB

dB

rnA

NOT E For the purpose of these tests. tags 1. and 4 arc connected together and themixer emitter is connected to earth via a O.022,..F capacitor. The :ludiooutput is measured across a 4. 7kQ load.

NOVEMBER 1969 LP1l59 Page 1

ASSOCIATED CIRCUIT.

-AUdIo

•

r- _oJ: =..:"_-.=_"::.::.::.e;;,...:::=::.::. ==-_""l.. - -,I ! 7~v:.,

OUTlJNE AND DIMENSIONS

4 tags 0075±OO10 wldo whIch maybe bent down for mounting

1--"560 ± 0005---J

•0·64max.t

lstLF.T. 2ndI.F.T. 3rdI.F.T.

,I.

;"'9;c====+=r=n3 1.192 max.

OO~4max.dlDimensIons In inches

CJearanclZ hollZ locations to acclZpt connection tags8 holes 0·060/0·05!5 dIe. postlon tolerance 0·003 dio.

0·750 ",..(T-R) -+S -- - -- 6 4 rr- ~ I 0·'50 (}900

O.GOOL (T.P.) (T-R)(T-R) r, 7t~ L

0'300t -- --=if(T-R) 2·450 -I' IB71'771

nR)Tlte Inue of tile lnformnlon contained In this publication docs nat Implyany authority or IIcenoe for the utilisation of any patented feuu .....

LP1l59 Page 2

I. F. MODULES LPI164LPII6S

Fully screened intermediate frequency modules for amplification and detection ofLm. signals at 10. 7MHz and a.m. signals at 470kHz. The first stage is used as ani.f. amplifier for Lm. and a self-oscUlating mixer for a.m. operation, in conjunc-tion with an external oscillator coil.

LPll64 LP1l65 ~

Supply voltage 9.5 7.0 V

Supply current (approx.) 7.0 3.5 rnA

A.M. operation

Typical sensitivity for50mVoutput 1.0 1.3 MV

-6c1B bandwidth 6.5 6.5 kHz

Attenuation at ::I: 9kHz 30 30 dB

F. M. operation

Typical sensitivity for30mVoutput 120 240 MV

A. F. output at limiting 150 75 mV

-3dB bandwidth 300 300 kHz

Attenuation at ± 300kHz 35 35 dB

Further details may be obtained from the Consumer Electronics DivisIon.

DECEMBER 1969 LPll64/65 Page 1

R.F. -I.F. AMPLIFIERMODULE LPII66

The Mullard LP1l66 is a fully screened transistorised Lf: amplifier and mixerstage designed to cover the flhort, medium and long' wave -bands using externaloscillator coils. The circuit connections have been arranged so that either inductivelycoupled or Colpitts 05c111ator circuits maybe employed, thus allowing the user mnx­imwn flexibility in the choice of tuning components.

The mixer stage uses an AFl15 transistor which may be operated up to l:mfHz onflmrlamental or 26MHz on second harmonic with suitable oscillator coils, ttuling andcoupling capacitors. Two stages of i.f. amplification using AFl17 transistors andsingle tuned i.f. transformers are followed by an QAnO diode detector.

Particular attention hl.ls been paid to r.f. filtering within the module, the supply linebein~ decoupled adjacent to the supply tag with further decoupling for the mixer/oscillator stage. The audio output is fntercd by a resistor capacitor network andthe whole unit is enclosed in a metal box which may be connected to any suitablepoint of low r .f. potential.

Connection to the module is by means of eight tinned tags which may also be used tomount the module to n printed board.

PERFORMANCE

2.0IlV:l: 5dB

5.0::1:1.0 kHz

Sensitivity (at 470kHz for 50mV output.Input modulated 30% at 400Hz)

Bandwidth (at -OdB)

SelectiVity (at ::I:9kHz from centre frequency)

Consumption, approx.

>22

3.3

dB

rnA

NOTE For the purpose of these tests the top cnd of the first i.f. transformer primaryis connected to decoupled supply line and the mixer emittcr is decoupled totag 6 viaa 0 .0221lF capacitor. The audio output is measured across a 4. 7kOload.

NOVEMBER 1969 LP1166 Page 1

OUTLINE AND DIMENSIONS

:4 tags Q·Q75±0010 wlda whld;l maybe bt2nt down for maunllng

~olstI.F.T.

~0"2 o.L

. min. max.a _L*_L+

----.2ndI.F.T. 3rdlF.l.

~ r14 1.19

;-:'-==~~~~~~~~}~ T1••----~44max.---~

Dimensions in Inches

ClearancQ: hole locations to acc12pt connt2ction tags

O8 holl1:s 0060 I 0·055 dla. postlon tolerance 0003 dla

0·75 ".-l1R) ~-- - --- - 9 4 r

~~ I 0150 0900

0'6001.- I,e) l1e)

(,e) -!J == === 4 -.l L~ r0·300

I,Rl 2-450 _I,Rl

LP1166 Page 2

R.F. -I.F. AMPLIFIERMODULE

ASSOCIATED CIRCUITS

LPII66

,-----------,r----'<-+I-;--~~---------_r-<-7·611

,"r--------

For usc with inductively coupled oscillator circuits

•,,

•••.,.,,,,

IIIII •

-I +

Audio

<11"7 k ...

,--------------l.r-'o---;--r-_~~----------___jr--07-7·6 v

I

________ -1 +,~---

•IIII

I '

,,I

,j,...

For use with Colpitts type oscillator circuits

Tile i,sue of the Information contained In thll publication doft. not Implyany luthorlty or licence for the utillntlon of any puented feature.

LP1166 Page 3

F.M. TUNERMODULE

F. M. tuner module using silicon transistors, having a tuningcapacitor incorporating a. m. sections I and intended for usewith the LPl164, LP1165 and LPl171 a.m./Lm. modules.

LP II 69

QUICK REFERENCE DATA

Supply voltage (nominal) 6.8 vFrequency range

Power gain

DESIGN DATA

87.4 to 108

30

MHz

dB

Negative supply voltage (nominal)(maximum)

Supply current

Aerial impedances

I. F.

Output impedance

A.F.e. at lOOMHz

A. F. C. centre voltage

A. F. C. polarity

6.8 V7.8 V

3.5 rnA

75 and 300 "10.7 MHz

75 "200 kHz/V

-6.8 V

positive going voltage changedecreases oscillator frequency

A.F.e. voltage range (maximum)

NOVEMBER 1969

'2 V

LP1169 Page 1

DESIGN DATA (cont'd)

A. M, capacitor (both sections are identical)

C min. (maximum)

Capacitance swing

Minimum trimmer swing

PERFORMANCE

9

280

9

pF

pF

pF

Measured with supply voltage of 6.8V and load impedance of 470Q

Frequency range (see note 1) 87.4 to 108 rVllIz

1. F.

Bandwidth to -3dB points

Power gain (measured at 100MHz) (typ.)(min.)

Total gain variation over complete tuning range (max.)

Noise factor at 100MHz (75Q source) (max,)

Image suppression (at 100MHz wanted signal) (nom.)

I. F. rejection (at 100MHz wanted signal) (nom.)

The oscillator will function at supply voltages

Oscillator stability (worst case)

with respect to supply voltage, a.Lc. disconnected

with respect to temperature, a.Lc. disconnected

NOTE

lO,7MHz:l:50kHz

350 kHz

30 dB26 dB

8 dB

8 dB

36 dB

54 dB

>4.5 V

50 kHz/V

20 kHz/degC

1. Setting accuracy ±O. 2MHz at 87.4MHz, and ±O. 5lVIHz at 108MHz.

MECHANICAL DATA

Maximum torque on drive spindle

Reduction gear (antibacklush type)

10

u.3:1

gm

Drive shaft, 25mm long by 6mm diameter. Mounting is effected by means of threeself-tapping screws, No.2 type B to B.S. 4174.

LP1169 Page 2

F.M. TUNERMODULE

LP II 69

OUTLINE, DIMENSIONS AND CONNECTIONS

38I--I-$- ---+Eff. +-$J-/~-'max

.L,J;:=~~_13 holu 1·9mln, d==Ja.forself topping screws

1----- 82 max

15·114·9

8·3

f20·3

I

4

All dimensionsIn millimetres

5

4 holes 4·9 min LJ...l--4.5(x2)

View In direction of arrow A

300 J"l. Input

75 fl Input

75 & 300 .n. Input-6-8 V Supply

,.2.3

4.-

6548 7

9

5. Output

10 6. - Output (earth)

7. - Positive sUPPly & canA.M. oscillator 8. - A.F. C.

trlmmu A.M. aerialtrimmer 9. - A.M. oscillator capacitor

• 10. - A.M. aerial capacitor

LP1169!1 and LPllG9!2 differ from LP1l69 only In the pasHlon of the tuning shaft.

Type No Position of spindle

LP1l69 a

LP1l69/1 b

LPIIG9/2 c

LP1l69 Page;]

A.M./F.M. I.F. AMPLIFIERMODULE LPII71

I.F. amplifier module including an a.m. oscillator coil. This unit is primarilyintended for usc in conjunction with the LP1l69 f.m. tuner module.

QUICK REFERENCE DATA

470:1:2 kHzlO.7MHz:l:50kHz

SUpply voltage (nominal)

A.M. i.£.

F,M. Lf.

DESIGN DATA

Positive supply voltage (nominal)(maximum)

Supply current (no signal)

I.F. (a.m.)(!.m.)

A,M. OPERATION

Optimwn aerial source impedance200kHzlMHz

Oscillator coil inductance (nominal)

7

470

10.7

78

3.5

2500

170

V

kHz

MHz

vV

rnA

When this module is used in conjunction with the tuner module LP1169, the mediwnwave tuning range is achieved with a padding capacitor of 270pF connected betweenthe oscillator coil and the oscillator section of the tuning capacitor~Band-switchingarrangements should include means of connecting a lOOkn damping resistor acrossthe oscillator coil on m. w. only.

NOVEMBEU 1969 LPl171 Page 1

F.M. OPERATION

50 to 2GO Q

470 Q

input frequency riseproduces positive goingchange in a.i.c. voltage

o V600mV per 100kHz

I. F. source impedance rangeInput impedanceA. F. C. output polarity

A.F.e. eentre voltageA. F. e. sensitivity

Audio load impedance (total)(a.m.) max.

min.(f. Ill.) min.

102.52.5

!illkO!ill

PERFORMANCE

Measured with supply voltage of 7V and load impedance of 4. 7~.

A.M.

Bandwidth to -6dB pointsselectivity at ±!JkHzSenSitivity for 50mV output, 30% modulated

m.W. ,1MHz1. w., 200kHz

A.G.C.

6.5 kHz30 dB

llJV ± 6dB1. 5ftV ± 6dB

10 dB,,4 V

300 kHz35 dB

240IJV ± 8dB

40 dB

Typically 6dB output change for 60dB input changeSignal to noise ratio

(lMHz, 30% modulated, 1. 5IJV input)Thc oscillator will fWlction at supply voltage

Bandwidth to -3dB pointsSelectivity at ±300kHzSensitivity for 30mV output, 22. 5kHz deviationSignal to noise ratio

(240J1V input, 22. 5kHz deViation)

A.M. rejection

Measured with a 10. 7MHz carrier of 5mV amplitude, simultaneously modulated to30% at ll{Hz, and deviated to 22. 5kHz at 400Hz. A.M. output typically 36dB belowf. m. level.

F.M.

Audio output at limiting(5mV input, 22. 5kHz deviation at 400Hz)(With load of lOOkn)

75120

mVmV

LPl171 Page 2

A.M./F.M. I.F. AMPLIFIERMODULE

OUTLINE AND DIMENSIONS

LP 1171

All dim¢n~ion5 in mm

~---e2'1mQl( ----l6f:r--..,--------d.,."O----Cr

1e • "!5 '124 41'2 max

~ l:.L O -Ju:USlob to pr-OVi<lOl 4 togs 5-2 mm long and 1'6!5mm wide

may be bent ov'·!" for mounting

! '20mo:K

------ --~.'m;"0"dja~L

0,

dO 0'* 0"

0'

o 0m

COIUlCctions

00 bO cO fa 09

1.2.3.4.5.

15.6.

10.11.12.13.14.

Signal inputTrl collectorF,M, coil, earthy endEarthEmitter Trl, via capacitorOscillator coil primaryA,M, coil and damping diodeEarthF. M. outputA.F. C. outputPositive supplyA.M, output

a. A.M. oscillator coilb. A.M. 1st Lf. primaryc. A.M. 1st 1. r. secondaryd. F .M. 2nd i.f. primarye. F.M, 2nd Lf. secondaryf. F.M. 3rd i.£. primaryg. F.M, 3rd l.f. secondaryh. A. M. 2nd i. f.k. A. M. 3rd i. f.ill. Ratto detectorn. Ratio detectorp.

R¢cnMmllnded p,.inted wiring E!loard Pililrcing Diagram

-.----.--,"";;;'.'3-',~·"t=----:~5,.~?-I_--'-j!,--lr--.---115-2.4.-- I, :'3-81 30

l··6

12 ::::: '2m;" ,;,==1 _: ~ ,~~-=====2=6~·t=7=~-.J29

LPl171 Page 3

AUDIO MODULE LPI173~

QUICK REFERENGE DATA

Audio amplifier module intended for use in mains operated radio receivers andradiograms.

Output power. nomlnal

Supply voltage

Load impedance (see note 1),

10

+24

4

wvo

DIMENSIONS

;rinted circuit board

:..i....L.,....lIf I 8.5max

.. ..! t2 fIXing holesIII 4

1-------,__95.'5 --194,95

I16.5

t

0120

I23.7

I

d

.--.--_. -=~~~==~==;==f~._._._.- f f• t

.~.__ .__ .

11 connecting pinsIII 0.8 (21 sw.gJ

1----94 .5. ' L913

mox 6.79.0 8.57.'5 7.0

70.1max

Heatsink1.6 (16 s.w.g)

All dimensions in mm

Dimension • b c d • f

millimetrcs 5.08 35.56 40.64 45.72 50.8 55.88

inches 0.2 1.4 1.6 1.8 2 2.2

,WLY 1969Mullard------

LP1l73 Page 1

v

MOUNTING

Vertically: there .are two 4mm holes, 95. 55mm (max.) apart, on the module flangefor this purpose, ,

ELECTRICAL DATA (typical values unless otherwise stated)

Design

Supply voltage (absolute maximum)

Supply voltage

Supply current, lOW outputno signal'

Load impedance (sec note 1) .

Input impedance

Input voltage, lOW output, 4. 7kU source impedance

Temperature ratings

storagemaximum ambient

+24

77068

4

40

130

-40 to +7045

vrnArnA

"kg

mV

Note 1. The load impedance must be arranged to appear essentially resistive, bymeans of a Zobel network. This consists of a capacitor and resistor combina­tion, the value of the resistor being eql!al to the loudspeaker resistance, andthe capacitor value being determined by

C ""..h.R

2

where L is the loudspeaker inductance and R is its resistance. This networkshould be connected between pins 2 and 6.

Performance

Frequency response

O.5Woutput, to -3dB points

Total harmonic distortion

at 1kHz and 0.5Wat 1kHz and lOW

50Hz to 16kHz

0.22

%%

The voltage sensitivity of the module can be increased by connection of aresistor between pins 13 and 14, but this reduces the negative feedback; thusthe frequency response will be reduced and the distorti0IJ increased.

HANDLING NOTES

,(a) The module may be soldered directly into circuit using a soJdering iron, or solderbath, provided that the iron or solder temperature is below 2450C, and the solderingtime is less than 5 seconds.

(b) Care should be taken when bending pins that the printed circuit is not damaged.

(c) All soldering irons and signal supplies should be earthed to prevent breakdown ofthe transistors.

(d) Care must be taken to avoid a short circuit occurring across the output terminals,as this could cause permanent damage to the output transistors and associatedresistors through excess dissipation.

MullardLP1l73 Page 2

AUDIO MODULE

CONNECTIONS

LPI173

1­

.2-

-7-8-9-10-11

5- -1)

6-·~~~~~;;;;;;;;;;;;;;~d-14

Pin No.

1. Power supply positive input

2. Zobel network connection point

5. Audio output

6. Negative supply and audiooutput (earthy)

7. Power supply 'positive output

Remarks

8. }9. Tone control feedback resistors

10.

11. Audio input

13. Emitter end of feedback resistor

14, Input earth and negative supply

The heatsink is isolated electrically and would usually be connected to the supplynegative. However, in some applications, it may be advantageous to leave it'floating.', or to connect it to the supply positive.

/

Mullard------LP1l73 Page 3

VOLTAGE MULTIPLYINGMODULES

LP 1174Series

AVAILABLE FOR CUHBENT PRODUCTION; NOT INTENDED FOR NEW DESIGNS

QUICK HEFERENCE DATA

The modules j:{enerate e. h. t. and focus voltage from line 'output pulses tosupply colour picture tubes. To be used in conjunction with AT2055 or AT205Gline output transformers.

, (peak-tn-peak) 8. 7 kVin

VOlIi (c,h.L supply) (d. c.) 25 kV

V (foell!'! supply) (d. c.) .7 kvout

I (c.h.t. supply) (average) rnAoul

I (fOCIl8 supply) (averu((c) 100 "Aout

MOUNTING PHECAUTIONS

A separation of at least 15mm between any part of the main module body or its leadsand any metal parts of the receiver is essential to 'avoid any capacitive dischargecurrent and detuoingeffecls of the line output transformer. Mounting brackets mustbe confined to the module mountinK flanges.

TYPE 'NUMBER DF.SIGNATION

The LPII 74/10, /20, /30 are basedon five silicon rectifier diodes and four capacitors,In a cascade circuit to achieve 25kV output, and are suitable for tube applications.Types LPl17'\o/ZO and LP1174/30 are suitable for transistor applications. For circuitdiagrams, sec page 3.

MAy 1972Mullard

LPl174 Series Page 1

Lead length

0- 43

CASE AND TERMINATIONS

The modules are encapsulated in a flame retardant plastic case. Connections areby means of four flying leads, as shown below I and are flame retardant to lEe 197.

Lead No. input 15 em

Lead No. 2 earth 15 cm

Lead No. 3 focus voltage 15 crn

Lead No. 4 e.h.i.ouiput 60 em

DIMENSIONS (millimetreS)

~-'73 40.2 43 0

max. 39.8 .

j L~H-'t=,=,-'-----_---I::-~tJ,19.8

-----.:1

II----·_95.,~. I94.8

••-------110max.------....

;r-==;~~=~03=4~o:;;=I-~::r=9J A,(.L--*_ltO~6 1

f T1+- 84.7 j 0.236

84.3

ELECTRICAL DATA

Typical operation conditions

v in (peak-to-peak) (see noie 1)

Vout

(e.h.t. supply) (d.c.)

Vout

(focus supply) (d. c.)

lout (e.h.L supply)

lout (focus supply)

E. H. T. regulation (0 to 1. 5mA)

Mullard

8. 7 kV

'5 kV

7. 7 kV

rnA

100 "A.3 Me

LP1174 Series Page 2

VOLTAGE MULTIPLYINGMODULES

ELECTRICAL DATA (contd)

LPII74Series

Limiting values - these are the absolute operating limits which must not be exceededunder any conditions. '

v. (peak-ta-peak) 10. 5 kV

'"Vout

(c.h.t. supply) (d c.) (Bee note 2) 31 kV

I (e.h.t. + focus) 2 rnAout

Tamb

60 DC

NOTES

1. Maximum pulse duration 18% of one cycle.

2. This docs not imply that th~ voltage ratinp; for the final anode of thepicturetubemay be exceeded.

CIRCUIT DIAGRAMS

lP11741lQ LP1174f20

4 ""U'Q

lP1174/3Q

Surge limitingresistof

Mullard

0.2l1.

LP1l74 Series Pap;e 3

CIRCUIT DlAGHAMS (contd)

1. When uSing the LP1174!1O module, a 470S-1 surge limiting resistor capable, ofwithstanding high voltage must be connected in !:leries with lead number 2.

2. ,"'hen uSing the LP1174!20 module, a 47k11 resistor capable of withstanding highvoltage must be connected In series with the e. h. t. output lead 4 .

3. LP1174!aO incorporates a surge limiting resistor.

APPLlCA nON CIRCUITS

Linearity contral

Piclultlube

~....,.-'-j LP1171.130 1-'-----0

ly

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Mullard------LP1174 Series Page 4