MULTISTAGE VOLTAGE MULTIPLIER (ALTERNATIVES) Russian patent published in 2005 - IPC

FIELD: power engineering, industrial techniques for transformerless voltage rise, multistage generators, radio electronics, and medical instrumentation engineering.

SUBSTANCE: proposed multistage voltage multiplier has two bridge circuits, each incorporating two valves and two capacitors. Bridge circuit is connected at its inputs in phase opposition. Each output lead of every bridge circuit is connected to output valve. Integrated leads of output valves form output of first-stage. Each output lead of bridge circuit is connected to one output lead of one similar additional bridge circuit whose second output lead is connected to additional output valve lead. Other leads of additional output valves are connected to respective additional output leads of other additional bridge circuit and to ripple capacitor to form common output of next stage. Input of each additional bridge circuit formed by interconnection of two valves is connected through capacitor to respective input of respective bridge circuit. Connected to output lead of each additional bridge circuit coupled with additional output lead is output lead of next similar first additional bridge circuit to form output of next stage. As an alternative, one respective additional bridge circuit is connected to diagonally opposite terminals of first output lead of first bridge circuit and of second output lead of second bridge circuit, as well as to diagonally opposite terminals of second output lead of first bridge circuit and of first output lead of second bridge circuit. Each additional bridge circuit has two valves inserted in opposing arms of additional bridge circuit, capacitors being inserted in two other opposing arms; like valves of bridge circuit and of additional one are connected cumulatively. Each output lead of second diagonally opposite terminals of bridge circuit is connected to additional output valves, the latter being integrated in pairs with other respective valves. Integrated leads of additional output valves form output leads of next stage which are connected to ripple capacitor. Connected to output lead of each additional bridge circuit coupled with additional output valve is output lead of next additional bridge circuit similar to first one in its arrangement and connection. This forms output of next stage.

EFFECT: enhanced efficiency of multiplier incorporating provision for attaining several different voltage levels across output.

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