Clamp assisted cycle control regulating system
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United States of America Patent
Stats
-
Apr 13, 1982
Grant Date -
N/A
app pub date -
Jun 9, 1980
filing date -
Jun 9, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A precision regulated power supply for charging an energy storage capacitor wherein regulation is achieved using a triac to interrupt a connection between a primary winding of a transformer and a DC power source. The circuit is useful in a power supply for a photocopier flash lamp where precision regulation of light intensity is required. A control winding is wound on the transformer closely coupled to the power secondary winding. A triac is connected across the control winding such that the winding can be short circuited when it is desired to cease charging of the storage capacitor. Short-circuiting of the control winding collapses the voltage on the transformer secondary winding thereby inhibiting the flow of current in the secondary winding. Regulating circuitry senses the voltage on the capacitor and gates the control winding triac into conduction when that voltage reaches a desired magnitude.
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