Switching mode power supply
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United States of America Patent
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-
May 10, 1988
Grant Date -
N/A
app pub date -
May 7, 1987
filing date -
May 22, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A switching mode power supply where an input rectified voltage feeds in chopped mode the primary winding of a power transformer under the control of a transistor turned on by voltage pulses periodically generated by an oscillator directly fed by the input voltage and applied to the transistor through a control transformer, said transistor being turned off by a voltage pulse generated by regulating circuits fed by the output voltage of the power supply and applied to the transistor through the same control transformer which is further provided with a winding where anelectromotive force is induced which is proportional to the current flowing through the primary winding of the power transformer.
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