Inductive load driving amplifier

Details Inductive load driving amplifier Inductive load driving amplifier

H - Electricity

03

K

330/2

H03K 17/60 (2006.01)

Patent

CA 1111517

ABSTRACT: An inductive load driving amplifier is disclosed which includes two serially connected transistors, with Zener diodes limiting the collector-emitter voltage of the one and diverting the collector-base current of the other when the first one switches off. The driver is implemented as an integrated circuit. This collector isolation consti- tutes a high voltage Zener diode which contributes to limit the collector voltages. The combination of these features prevents the device from being exposed to second breakdown when switching highly inductive loads (e.g. several Henrys under SOV), thereby avoiding the harmful effects of break- downs during switching.

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