how does air cmpressor, transformer motor works?

just the basic principle of operation.

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Bill says...

In general terms, your electric compressor motor will pull too much current when it tries to start. The electric motor requires an inrush current that is quite a bit higher than the current it needs to run after it gets going.

So, electric motors often have a capacitor on them. A capacitor is sort of a quick discharge battery that, when the compressor motor tries to start, boosts the current available, helping the motor get up to speed and past the inrush current period.

Once the motor is running, if the motor is sized correctly to the power supply, it will do very nicely on the normal supply current.

Cheers,

Bill