Button controlled auto-coupling step-down starting circuit
Source: InternetPublisher:公子李 Keywords: Starting circuit BSP motor Updated: 2021/10/01
48. The circuit is shown in Figure 3-48. When starting, press the start button SBi, and the motor will start by reducing the voltage of the autotransformer .
When the motor speed is close to the rated speed, press the boost button SB2, the autotransformer will exit operation, and the motor will enter full voltage
normal operation.
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