D7331 audio power amplifier , the main feature is low power supply voltage, VCC = 2 ~ 5V, quiescent current is low, when VCC = 3V, the quiescent current is 3MA, therefore, the circuit is mainly suitable for low current and voltage pocket, miniature, box Tape recorder and radio. Two circuits can be connected to the BTL circuit to increase the output power.
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10.Silicone Speaker Case photo's for reference.
Silicone Speaker Case
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