Volume-adjustable passive magnetoelectric buzzer drive circuit and method
A technology for driving circuits and buzzers, which is applied to instruments, sounding devices, etc., can solve the problems of different volume of buzzers, difficult to operate, and difficult to integrate, and achieve the effect of solving different needs.
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[0018] The technical solution of the present invention will be described in detail below in conjunction with the drawings.
[0019] The invention provides a passive magnetoelectric buzzer drive circuit with adjustable volume, such as figure 1 As shown, it includes: an input unit, a trigger unit, an input / output control unit, a reference buzzer drive unit, and a buzzer volume adjustment module; the input unit is respectively connected to the trigger unit and the input The input / output control unit is connected to the reference buzzer driving unit and the buzzer volume adjustment module; the buzzer volume adjustment module is connected to the reference buzzer The unit is connected to the buzzer; the trigger unit receives the first input signal sent by the input unit, generates a trigger signal and sends it to the input / output control unit; the input / output control unit receives the trigger signal, Generate a buzzer driving signal and send it to the reference buzzer driving unit; th...
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