This is a small amplifier using TDA2822 chip designed for portable cassette players and radios. Including volume control. A 9 volt power supply is ideal for supply, which can be a source with batteries or transformer. It is not necessary to use heat sink.
General integrated amplifier circuit external components and need more larger heatsink. This paper presents a simple amplifier circuit, made easy. TDA2822 amplifier integrated circuits used in music players, portable DVD and other audio playback; power is not great but you can satisfy the requirements of the hearing, and the circuit is simple, good sound quality, wide voltage range of characteristics such as the amateur production Small amp better choice.
Feature of TDA2822 Amplifier Circuit
- Power Supply: 3 – 12 V at 200 – 500 mA max
- Idle Current: ~ 10 mA
- Output impedance 4 - 32 Ohm
- Freq. response ~ 40 Hz to 200 kHz, 8 ohm, G=10<> 50 kHz, 32 ohm
- Output Power:
- > 1 Watt max. 4-8 ohms, 12V DC
- > 500 mW, 32 ohm, 12V
- > 500 mW, 4 ohm, 6V
- ~ 0.4 Watt RMS cont. per channel