Wednesday, April 10, 2013

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100W POWER AMPLIFIER USING TDA7293 CIRCUIT DIAGRAM

100W POWER AMPLIFIER USING TDA7293 CIRCUIT DIAGRAM

The TDA7293 amplifier specifications might lead you to believe that it can use supply voltages of up to ±50V. With zero input signal (and therefore no output) it might, but I dont recommend anything greater than ±35V if 4 ohm loads are expected, although ±42V will be fine if you can provide good heatsinking. In general, the lower supply voltage is more than acceptable for 99% of all applications, and higher voltages should not be used unless there is no choice. Naturally, if you can afford to lose a few ICs to experiments, then go for the 42V supplies (obtained from a 30+30V transformer).

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