The dual channel audio power amplifier circuit

Published:2011/6/3 23:59:00 Author:Seven | Keyword: dual channel, audio power amplifier | From:SeekIC

As shown in Figure 19.11, this is a dual channel circuit which consists of LM378 double computing amplifiers. When the voltage of power supply is 24v or the load resistance is 8Ω(or 15Ω),either channel can output power of 4W. Inside the circuit, there are current amplitude limit and heat cutting circuit, and there is the pressure steady power supply which allows the bias voltage to be auto-adjustable. Besides, it characterizes high wave limiting, good channel separation, high input impedance and few external elements. Etc. It is specially fit for stereo players, stereo recorders and so on.



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