Schematics > Audio > Amplifier of acoustic frequencies with preamplifier
Amplifier of acoustic frequencies with preamplifierTECHNICAL CHARACTERISTICS:
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.
Materially:
| 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. |
Notes:
Proportionally the resistance of loudspeaker changes the force that it can
give the amplifier:
| LS1 |
Force of expense |
| 2W |
6,5Wrms |
| 4W |
4,2Wrms |
| 6W |
3Wrms |
| 8W |
2,25Wrms |
Title: Amplifier of acoustic frequencies with preamplifier
Source: www.electronics-lab.com
Published on: 2005-02-01
Reads: 520
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