Switching power supply using controlled negative feedback in...

Details Switching power supply using controlled negative feedback in... Switching power supply using controlled negative feedback in...

2005-10-18

2005-10-18

Sterett, Jeffrey (Department: 2838)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

C363S021010

Reexamination Certificate

active

06956754

ABSTRACT:
A commercially available power source is rectified by a diode bridge and a capacitor and supplied to a transformer via a terminal. One end of a primary coil is connected to the terminal and the other end is connected to a switching device. One end of a feedback coil is connected to the switching device and the other end is connected to the terminal. A negative feedback circuit is provided between the switching device and the terminal. A rectifying circuit comprising a diode and a capacitor is provided on a secondary coil. A node of the coil and the capacitor is connected to the terminal via a resistor. In detecting circuits, a voltage across the terminal is detected and a current across the resistor is detected. When the detected voltage and current are equal to predetermined values, a control signal is supplied to a feedback circuit.

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patent: 6226190 (2001-05-01), Balakrishnan et al.
patent: 6366479 (2002-04-01), Usui et al.
patent: 6711035 (2004-03-01), Tomioka
patent: 6714425 (2004-03-01), Yamada et al.
patent: 8-340673 (1996-12-01), None
patent: 2000-209850 (2000-07-01), None
patent: 2001-197741 (2001-07-01), None

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