Amplifier of acoustic frequencies with preamplifier
TECHNICAL 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
electronic circuit
Source: www.electronics-lab.com
Published on: 2005-02-01
Reads: 1351
Print version: 
Other electronic circuits and schematics from Audio
-
Digital Volume Control
-
Guitar Amplifier
-
Ultrasonic pest repellent
-
Low impedance microphone amplifier
-
50 Watt Amplifier
-
Phono Preamplifier
-
20W Power Amplifier
-
Portable Mixer
-
25W Mosfet audio amplifier
-
Low cost intercom using transistors