22 Watt Amplifier
The 22 watt amp is easy to build, and very inexpensive. The circuit can be used as a booster in a car audio system, an amp for satellite speakers in a surround sound or home theater system, or as an amp for computer speakers. The circuit is quite compact and uses only about 60 watts.
Parts
Part |
Total Qty. |
Description |
Substitutions |
R1 |
1 |
39K 1/4 Watt Resistor |
|
C1,C2 |
2 |
10uf 25V Electrolytic Capacitor |
|
C3 |
1 |
100uf 25V Electrolytic Capacitor |
|
C4 |
1 |
47uf 25V Electrolytic Capacitor |
|
C5 |
1 |
0.1uf 25V Ceramic Capacitor |
|
C6 |
1 |
2200uf 25V Electrolytic Capacitor |
|
U1 |
1 |
TDA1554 Two Channel Audio Amp Chip |
|
MISC |
1 |
Heatsink For U1, Binding Posts (For Output), RCA Jacks (For Input), Wire, Board | |
Additional Notes
- The circuit works best with 4 ohm speakers, but 8 ohm units will do.
- The circuit dissipates roughly 28 watts of heat, so a good heatsink is necessary. The chip should run cool enough to touch with the proper heatsink installed.
- Printed circuit board is preferred, but universal solder or perf board will do. Keep lead length short.
- The circuit operates at 12 Volts at about 5 Amps at full volume. Lower volumes use less current, and therefore produce less heat.
Keywords :
Amplifier,
Circuit,
Schematic,
Audio,
Power,
Watt
Writer : delon |
19 Oct 2006 Thr  
| 14.322 Views