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Automatically motor start circuit with RD9481 Doppler effect

2016-09-04 12:29  
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Automatically motor start circuit with RD9481 Doppler effect sensor
Automatically motor start circuit with RD9481 Doppler effect sensor
The circuit is shown as the figure. It includes the Doppler effect sensor control circuit, thyristor control circuit, music sound circuit, amplifier circuit and AC buck rectifier circuit. Doppler effect sensor integrated circuit RD9481 is the core device of the circuit, and its internal functional block diagram is shown in the following figure.