SECONDARY POWER SUPPLY Russian patent published in 2002 - IPC

Abstract RU 2178234 C1

FIELD: electrical engineering; power supplies for various electrical and electric processing plants. SUBSTANCE: secondary power supply has power circuit incorporating diode bridge whose diagonally opposite ac terminals are connected across supply mains. Connected to one of bridge leads through series-connected inductance coil and cutoff diode is terminal lead of load shorted out by filter capacitor. Other lead of load is connected through current sensor to second lead of bridge. Transistor switch connected for passing current between common point of inductance coil and cutoff diode and that of load and current sensor is provided with respective input for its control unit. The latter has AND gate and logic circuit incorporated in two semiconductor relays. EFFECT: enhanced power factor of single-phase power supply. 3 dwg

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RU 2 178 234 C1

Authors

Magazinnik L.T.

Magazinnik G.G.

Dates

2002-01-10—Published

2001-02-13—Filed