Device for supplying a voltage to an electronic circuit, in part

Details Device for supplying a voltage to an electronic circuit, in part Device for supplying a voltage to an electronic circuit, in part

1994-06-09

1996-09-03

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

323902, 323223, 323271, 323299, 361111, H02M 704

Patent

active

055529780

ABSTRACT:
A device for supplying a power supply voltage to an electronic circuit, in particular to an electronic circuit associated with a current sensor for measuring the electrical current in a high-tension line, comprises a current transformer having a primary circuit and a secondary circuit, a rectifier bridge shunting the secondary circuit and output terminals of the rectifier bridge, a first capacitor in parallel with a first resistor across which said power supply voltage is obtained, and a first switch disposed between the output terminals of the rectifier bridge. It includes between the output terminals of the rectifier bridge a branch comprising in series a second capacitor, a second switch and a second resistor. The first switch is controlled by a first threshold detector shunting the second capacitor. The second switch is controlled by a second threshold detector shunting the first capacitor. The first and second threshold detectors respectively close the first and second switches when predetermined first and second thresholds are respectively reached.

REFERENCES:
patent: 3434011 (1966-08-01), Zocholl
patent: 3733517 (1973-05-01), Wilson
patent: 3777049 (1973-11-01), Piccione
patent: 5345145 (1994-09-01), Zeng et al.

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