Motor speed control circuit
Source: InternetPublisher:清宁时光 Keywords: Motor speed control circuit voltage drop Updated: 2021/08/07
Working principle of the circuit: It can be seen from the figure that when the motor is no-load, the voltage is VT.
The base voltage is determined. When a motor is loaded, the current it absorbs increases. Since the voltage drop
across RP2 is greater than 0.65 V at this time, VT2 will conduct and apply full voltage to the
motor.
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