Time multiplexed power supply
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United States of America Patent
Stats
-
Feb 29, 2000
Grant Date -
N/A
app pub date -
Jun 11, 1998
filing date -
Oct 11, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A variable voltage power supply in which multiple, independent, variable voltage direct current power supply circuits are connected in parallel to a single secondary transformer winding without simultaneously loading the transformer secondary. Each power supply circuit is controlled by a logic circuit that gates a power FET which, in turn, delivers current to a storage capacitor from a full wave rectifier on the transformer secondary winding. By controlling when the FET is 'on' in relation to the AC input waveform, the voltage to which the storage capacitor is charged can be regulated and simultaneous loading of the transformer secondary eliminated.
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