声频率的前置放大器电路 (Amplifier of acou
声频率的前置放大器电路 (Amplifier of acoustic frequencies with preamplifier)
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. |
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