Switching power supply unit

Details Switching power supply unit Switching power supply unit

2005-07-19

2005-07-19

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

06919713

ABSTRACT:
Accumulation and emission of energy in and from a coil having an intermediate tap is controlled by switching a DC input voltage from a DC power source on and off. Controlled voltages generated at a plurality of terminals are rectified and smoothed to output a plurality of DC output voltages. Connection to a reference voltage is controlled such that the voltages generated at the plurality of terminals are not dependent on the DC input voltage during the on-off switching. Therefore, a switching power supply unit is provided in which a coil having an intermediate tap is used to allow a simple configuration, to convert a DC input voltage into a plurality of DC output voltages with high efficiency, and to achieve compactness.

REFERENCES:
patent: 3641424 (1972-02-01), Kuykendall
patent: 3745443 (1973-07-01), Weil
patent: 4093877 (1978-06-01), Pollmeier
patent: 6388430 (2002-05-01), Eldridge
patent: 7-111778 (1995-04-01), None
patent: 9-266665 (1997-10-01), None
patent: 10-150767 (1998-06-01), None
patent: 11-18426 (1999-01-01), None
patent: 11-150875 (1999-06-01), None

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