Ac-dc converter type of supply

Details Ac-dc converter type of supply Ac-dc converter type of supply

H - Electricity

02

M

321/89

H02M 7/12 (2006.01) H02M 3/158 (2006.01) H02M 1/00 (2006.01)

Patent

CA 2031753

Disclosed is a supply of the AC-DC converter type where the regulation is achieved by successive operations for charging and discharging a capacitor. The supply includes an input oscillator circuit, the period of which is very small as compared with that of the input AC voltage. A first switch is closed during the time necessary for the charging of the capacitor of the oscillator circuit. When it opens, a second switch gets closed to enable the transfer of energy towards the load. The regulation is done by an oscillator circuit which is controlled by an error voltage on the load and which triggers a monostable trigger circuit to close the first switch and open the second one during the period when this monostable trigger circuit is in its quasi-stable state.

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