TDA2002组成的音频前级功率放大器电路图
TECHNICAL CHARACTERISTICS(技术指标):
Tendency of catering: 15V
Force of expense: 4,2Wrms in the 4W
Minimal signal of entry: 94mVp-p with preamplifier, 0,65Vp-p without the preamplifier.
R1
2,2KW
R2
330KW
R3
4,7KW logarithmic potentiometer
R4
330W
R5
1KW
R6
1,5W
C1, C6
100nF polyester
C2
100mF/25V ilektrolytjko's
C3, C7
1mF/25V electrolytic
C4
1000uF/25V electrolytic
C5
10uF/25V electrolytic
Q1
BC547
U1
TDA2002
LS1
Loudspeaker.
LS1
Force of expense
2W
6,5Wrms
4W
4,2Wrms
6W
3Wrms
8W
2,25Wrms
Proportionally the resistance of loudspeaker changes the force that it can give the amplifier: