Amplifier 22 Watt

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. The circuit is not mine, it came from Popular Electronics.

Schematic:

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