Circuit device for acquiring number of rotating circles of motor
A circuit device and power conversion circuit technology, which is applied to motor control, electrical components, power control mechanisms, etc., can solve the problems of dangerous window glass, lack of collection, and high cost, and achieve cost reduction, accurate and reliable counting, and cost avoidance. high effect
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[0029] Refer to Figure 1 ~ Figure 5 , A circuit device for collecting the number of motor rotations of the present invention includes a microprocessor 1, a filter / shaping circuit 2, a locked-rotor sampling circuit 3, a power conversion circuit 4, a locked-rotor sampling resistor R, and a switching circuit QH, wherein: The filtering / shaping circuit 2 is an integrated circuit module that converts the input sine waveform into a square wave signal and outputs it;
[0030] The locked-rotor sampling circuit 3 is an analog-to-digital conversion circuit that processes the input steeply rising DC waveform into a square wave signal and outputs it;
[0031] The power conversion circuit 4 is a circuit module that converts the vehicle power supply 12V into a 5V voltage to supply power to the microprocessor 1;
[0032] The locked-rotor sampling resistor R is a metal wire resistance of 0.01Ω;
[0033] The switching circuit QH is composed of a high-frequency transformer L, a motor M, A relay 5, and...
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