DEVICE FOR SHAPING POWER TRANSISTOR CONTROL PULSE Russian patent published in 2003 - IPC

FIELD: converter engineering; building output stages of power transistor control systems for static converters or electric drives. SUBSTANCE: device that has dc-to-alternate-rectangular- burst voltage converter incorporating transformer at output and control signal source at input, rectifier bridge at transformer output, resistor, and capacitor is provided in addition with p-n-p transistor and diode that function to connect power transistor gate to negatively charged capacitor lead, and current-limiting resistor used to limit capacitor charging current, all of them being newly introduced to generate control pulse. EFFECT: enhanced speed of driving power transistor in conduction and cutting it off. 1 cl, 2 dwg