DC-TO-AC VOLTAGE CONVERTER Russian patent published in 2006 - IPC H02M7/538 

FIELD: electrical engineering; power supply converters.

SUBSTANCE: proposed dc-to-ac voltage converter has transistor bridge built around four transistors whose emitters are interconnected in pairs with common point of one emitter pair being connected to one pole of power supply and that of second emitter pair, to its other pole. Each collector of one pair of transistors having common emitters is connected to that of other pair and connected to common points is primary winding of transformer whose magnetic circuit also carries secondary windings with load being connected to one of the latter. Circuit set up of series-connected capacitor and transformer secondary winding is inserted between bases of each pair of transistors whose emitters are interconnected. Circuit set up of series-connected resistors and diode is inserted between emitter and base of each transistor of bridge; resistor is connected between bases of each pair of transistors whose like electrodes are not interconnected.

EFFECT: enhanced reliability.

1 cl, 2 dwg