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while studying the wiring diagram of an old friedrich air conditioner i found that there is what is called a power pack between the Herm and Common terminal of the run capacitor .
can any one provide me of more information about this power pack , what is its purpose and how does it work ?
thanks in advance
Bahaa
bahaah@hotmail.com
A power source supplies electricity to a high-voltage storage capacitor. The capacitor accumulates the power and when the triggering circuit is closed, the energy surges to the starting capacitor or winding.
This technique is commonly used in studio photocameras flash equipment. Light is kept low, and when the photographer pulls the trigger, the lights immediately flash at high beam.
In the old days of traditional photo imaging with films, it was usual to hear the whistle of the flash while batteries were charging the high voltage capacitor power pack.
thank u very much for this information .