Inductively loaded switching transistors excess voltage protection - uses resistance forming part of capacitor discharge current circuit to reduce losses without lowering protection effectiveness

摘要: The circuit configuration is designed for the protection of inductively loaded switching transistors against excess voltages in electronic pushpull static frequency-changers. comprises a series-connected capacitor and diode, connected to discharge current circuit, capacitor, that contains resistance. series parallel with collector-emitter transistor. To prevent losses arising from arrangement which required protect over-voltages, without reducing efficiency resistance exclusively component part capacitor. consists supply voltage source push-pull freq. changer or primary changer's power transformer.