figure 1. the sub woofer amplifier (48w ocl) circuit · sub woofer amplifier (48w.ocl.) code 671...
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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!