8 Watt Audio Amp

Here is the schematic for an 8 watt audio amp. This amp can be used as a simple booster, the heart of a more complicated amplifier or used as a guitar amp.

Schematic

LM383 Pinout

Parts

Part, Total Qty, Description, Substitutions
C1, 1 ,10uf, Electrolytic Capacitor
C2 ,1, 470uf ,Electrolytic Capacitor
C3 ,1, 0.1uF, Disc Capacitor
C4, 1, 2000uf Electrolytic Capacitor, 2200uF
R1 ,1 , 2.2 Ohm Resistor Anything Within 10%
R2, 1, 220 Ohm Resistor Anything Within 10%
IC1, 1 ,LM383 8 Watt Amp IC , ECG1232, TDA2002

22 Watt Audio 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.QUALITY picture scheme.

Schematic

Parts

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

Notes

1. The circuit works best with 4 ohm speakers, but 8 ohm units will do.
2. 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.
3. The circuit operates at 12 Volts at about 5 Amps at full volume. Lower volumes use less current, and therefore produce less heat.
4. Printed circuit board is preferred, but universal solder or perf board will do. Keep lead length short.

skema 200 Watt High Quality Audio power Amplifier

This high skema power audio amplifier will give you top class quality for loudspeaker 4 – 8 ohm. Frequency range 20-20000Hz, Voltage 24-36V with current max 5A. You need heatsink to keep the transistor from overheating.