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(广州读者彭大玲来信:请介绍一下电冰箱的无触点起动)电冰箱无触点起动是一种单相电动机的起动方式。在起动绕组电路中以正温度系数的热敏电阻(即 PTC 元件)为控制元件,构成一种无触点起动电路。起动时由于 PTC 元件
(Guangzhou readers Peng Daling letter: Please introduce the refrigerator non-contact start) Refrigerator contactless start is a single-phase motor starting. In the starting winding circuit with a positive temperature coefficient of the thermistor (ie, PTC components) as the control element to form a non-contact start-up circuit. When starting due to PTC components