INVERTER Russian patent published in 2003 - IPC

FIELD: converter engineering; inductive heater power supplies. SUBSTANCE: inverter has single-phase bridge built around transistors shorted out by opposing diodes and capacitors, and filter capacitor. Input leads of single-phase bridge are connected to input leads of inverter through filter choke coil. Output leads of inverter are shorted out by capacitor. Connected in series with filter capacitor are diode shorted out by varistor and second filter capacitor. Interconnected capacitor filter, diode, and second capacitor filter short out input leads of single-phase bridge. Negative input lead of inverter is connected through circuit set up of series-connected choke and second diode to anode of first diode whose cathode is connected to positive input lead of inverter through second circuit set up of series-connected third diode and second choke. EFFECT: enhanced operating reliability of inverter. 1 cl, 1 dwg