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8/18/2019 tonepad_lpb1
1/1
0
½
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0 ½ 1 1½ 2
Build an EH LPB-1/LPB-2 transistor booster on this layout. Millenium bypass (R.G. Keen) added to theboard for LED with DPDT footswitch. DPDT bypass switch wiring shown on the layout. Registeredtrademarks are property of their owners.
El boost-oRev.2.Jan.30.2004
Resistors1 - 390 ohm1 - 10k1 - 43k1 - 430k1 - 2M2
1 - 100k Log Pot.
Millbypass1 - FET (MPF102 or other)1 - 4k71 - 2k21 - Diode (1N914)1 - LED
Capacitors2 - 0.1µF
Transistors1 - 2N5088
PARTS LIST
LAYOUT
READY TO TRANSFER
L a y o u t a n d p r e s e n t a t i o n b y F r a n c i s c o P e ñ a 2 0 0 1 - 2 0 0 3 ® .
A l l r i g h t s r e s e r v e d .
A u t h o r i z a t i o n f o r p e r s o n a l u s e o n l y ,
a n y c o m m e r c i a l u s e i s f o r b i d d
e n .
P e r m i s s i o n f o r p o s t i n g / s e r v i n g l i m i t e d t o
+
9v
AC
ADAPTOR
INPUT 0.1
0.1
430k
2M2 43k 390
10k
100kAQ1
Schematic
2k2
LED 4k7
1N914
2N5485
OUTP1
32
CTRL
INPUT JACK
TI P
INPUT JACK
TI P
OUTPUT JACK
TI P
OUTPUT JACK
TI P
D P D T
D
P
D
T
100kA
3 2 1
INN OUTUT
CN TNT
LE DED
GNDND
+9V9V
2 M
2
2
M
2
4 3 0 k
4
3
k
4 3 k
4
3
k
1 0 k
1
k
3 9 0
3
9
0 .
1
1
0 .
1
1
L E V E L E V E L
G
D11
4k 7k7
2k 2k2 F P 2 0 0 3 F L B O O S T L