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Novel small power DC motor speed regulating circuit

Source: InternetPublisher:兰博 Keywords: Small power speed control circuit DC motor speed control rectification Updated: 2021/02/24

50. Novel<strong>low power</strong><strong>DC motor speed regulation</strong> circuit.gif

Circuit working principle: The main circuit directly inputs 220 V AC, which is rectified
by the thyristor semi-controlled bridge and then supplied to the motor armature. The rectified voltage is higher and suitable for DC motors with a rated voltage of 150 N180 V and a power of less than 2 kW. Here, the thyristor VT, and the diode VD, VT2 and VD4 all use power semiconductor half-arm bridge modules.




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