Switching power supply apparatus and method
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United States of America Patent
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Apr 28, 2009
Grant Date -
Oct 25, 2007
app pub date -
Apr 13, 2007
filing date -
Apr 21, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Configurations provide reduction in the hum and the weak shocks that are produced in audio equipments where electrical power is supplied. Switching electrical power sources include, a rectification element that rectifies a current that is supplied, a switching element that switches the input voltage that has been rectified by the rectification element, an oscillator circuit that oscillates at a specified frequency and drives the switching element by means of oscillation, and a transformer with which the voltage that has been switched by the switching element is input to the primary oil and wherein an electrical power source output is obtained from a secondary coil. A plurality of capacitors are connected to the conductors.
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