Bluetooth-supporting voice part output control circuit with preceding-stage amplification function
A technology of output control and pre-amplification, which is applied in the direction of amplifier combination, speaker distribution signal, etc., can solve the problems of dry sound output and low output power, and achieve the effect of solving dry sound output, sufficient output power, and optimizing the output effect of sound elements
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[0068] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0069] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of a sound unit output control circuit supporting Bluetooth and with pre-amplification provided by the embodiment of the present invention.
[0070] The audio element output control circuit supporting Bluetooth and with pre-amplification includes a power supply circuit 1, a Bluetooth drive circuit 2, and a power output circuit 3 with a pre-stage operational amplifier; the power output circuit 3 with a pre-stage operational amplifier includes a power output circuit for a pre-stage operational amplifier The circuit 32 ,...
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