Use TDA1554 build 22watt audio amplifier
By SZ123 • 2009-05-15 • Category: Audio Diy • RSS 2.0 • Trackback •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.
| 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 |
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.
The circuit operates at 12 Volts at about 5 Amps at full volume. Lower volumes use less current, and therefore produce less heat.
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