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FUTURE KIT

FUTURE KIT

HIGH QUALITY ELECTRONIC KITS

HIGH QUALITY ELECTRONIC KIT SET FOR HOBBY & EDUCATION

R

NO.2

Figure 2.Circuit Assembling

ǧ¨Ã«ÑºÇÙ¿à¿ÍË áÍÁ»ì»ÅÔä¿àÍÍË 48 Çѵµ‹

SUB WOOFER AMPLIFIER (48W.OCL.)

CODE 671 LEVEL 3

Figure 1. The Sub Woofer Amplifier (48W OCL) Circuit

SUB WOOFERSPEAKER

SWON/OFF

AC IN

TRANSFORMER3A.

240 24

FUSE 1A.

C1 C2C1, C2 =

3300µF,4700µF

diode bridge5A. 200V.

SIGNAL IN

RGLFK671

CB

E

HEATSINK

TR10

BE

TR11

C

Figure 3. Installing the components

C

+

+

C .....µF

Watch the polarity!

R .....Ω

R

R

RESISTOR

ELECTROLYTICCAPACITOR

C

+

C .....µF

CERAMICCAPACITOR

C C

TRANSISTOR

TRTR

NPN

B

E

C

DK A DIODE

DK

A

D

K

A

TRANSISTOR

HEATSINKNUTTAG

BUSH

SCREW

MICA WASHER

IC

1

IC1

POTENTIOMETER

VR VR

Watch the position

of the notch!