Ferroresonant type DC power supply controlled by fully magnetic technique

A recently developed high-frequency magnetically controlled ferroresonant-type DC power supply is presented. The resonant voltage is controlled by applying an external field through an electromagnet to both sides of the saturable core. The voltage drop on the DC side of the power supply is offset by feeding the output current back to the winding of the electromagnet. The output voltage regulation due to load-current changes is 1% or less, and the transient performance is very high. The control-loop diagram for the power supply is presented.<
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