AC/DC power supply
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United States of America Patent
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-
May 20, 1997
Grant Date -
N/A
app pub date -
Nov 4, 1993
filing date -
Nov 4, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An AC/DC power supply includes an input sensing circuit for sensing whether the input connector is connected to an AC voltage source or to a relatively lower amplitude DC voltage source. When connected to the AC voltage source, a control circuit connects an input rectifier to the input circuit and also connects two primary windings of a power transformer in boosting relation to the output circuit. When the input connector is connected to the DC voltage source, the control circuit bypasses the input rectifier with respect to the input circuit, and connects only one of the primary windings to the output circuit while bypassing the other primary winding.
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