The first type is non-centrifugal switches, single-capacitor phase-shifting, such as electric fans, which are usually used on small motors
The second category, there is a centrifugal switch, single-capacitor phase-shift start, such as some fans and other equipment, but for various reasons, this motor seems to be less and less. But in some special places, it does exist.
The third type, that is, with a centrifugal switch, double capacitance double value phase shift type, is most common in many places, such as air compressors, cutting machines, bench drills and other places.
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