TRANSFORMER-FREE INPUT POWER SUPPLY Russian patent published in 1994 - IPC

Abstract RU 2009607 C1

FIELD: current conversion. SUBSTANCE: device has h. f. converter 9 shunted by thyristor 3 through current-limiting resistor 4. Converter is connected with input low-frequency capacitor 2. Control unit is connected with self-power circuit which is formed by additional rectifier 15, choke 16 and additional winding of power transformer 10. Charging capacitor 17 has to be starting capacitor and plays role of smoothing LC-filter of self-power circuit of control unit 14. Capacitor 17 is voltage supply for operation of thyristor starting pulse former. EFFECT: improved reliability. 1 dwg

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RU 2 009 607 C1

Authors

Konovalov S.I.

Golikov V.F.

Vasil'Evskij A.A.

Malashin A.N.

Klopov S.V.

Dates

1994-03-15—Published

1992-05-28—Filed