Switching mode power supplies

Details Switching mode power supplies Switching mode power supplies

2008-07-01

2008-07-01

Sterrett, Jeffrey L. (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S021160, C363S021180, C363S097000

Reexamination Certificate

active

07394669

ABSTRACT:
In a switching mode power supply, an input received from the secondary side of the transformer7and indicative of the power being drawn by the loads is used to control the timing of bursts. The input is compared with two threshold different threshold values V2, V3, and switching is enabled if the input rises above a first higher threshold value V2, and disabled if it falls below a second lower threshold value V3. A memory device FF1controls a current limitation circuit which limits currents in the primary of the transformer when the switching mode power supply is operating in the burst mode.

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