1?When the positive and negative power access can not be wrong, reverse burn easily chip.
2?This is an analog amplifier, need to consider the heat problem if the voltage exceeds 9V power long working hours, the need to increase the heat sink. A high voltage power chip will work full heat.
3?Independent power amplifier is preferable, if the computer's USB 5V power supply will be noise.
TDA2822 STMicroelectronics (ST) developed dual-channel monolithic power amplifier integrated circuits, typically for audio amplifier in the pocket cassette player WALKMAN, tape recorders and multimedia active speakers. It has a simple circuit, good sound , wide voltage range and other characteristics.
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