Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Reexamination Certificate
2006-04-04
2006-04-04
Patel, Rajnikant B. (Department: 2838)
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
C363S021180, C323S349000
Reexamination Certificate
active
07023717
ABSTRACT:
The present invention relates to an isolated-type switching power supply apparatus, which includes a power supply, a transformer being connected to said power supply, a switching element for switching an electric current going through a primary coil of the transformer so that energy generated on the primary side of the transformer is sent to the secondary side in accordance with the operation of the switching element. The present invention has a modulating circuit for modulating an output on the secondary side of said transformer, a transmitting rout for transmitting an output of the modulating circuit to the primary side of the transformer, a demodulating circuit for demodulating the output transferred through the transferring rout; and the controlling circuit controls the switching element in accordance with an output of the demodulating circuit and the controlling circuit is disposed on the primary side of the transformer.
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patent: 5349523 (1994-09-01), Inou et al.
patent: 5434767 (1995-07-01), Batarseh et al.
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Unitrode/Texas Instriument: “The UC1901 Simplifies the Problem of Isolated Feedback in Switching Regulators” Online! Retrieved from the Internet: URL: www.unitrode.com; retrieved on Dec. 12, 1999.
Fidelix Y.K.
Norris & McLaughlin & Marcus
Patel Rajnikant B.
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