in the current kurzschlussbetrieb outcome of the positive clamp amplifier

摘要

The transistor of an output stage having an emitter connected to the supply rail and a collector connected to the output node of the stage may be protected against the effects of accidental shortcircuiting of the output node of the stage with the positive pole of a battery while the circuit is unpowered, by a protection transistor of the same type of said output transistor to be protected and having an emitter connected to the base of the output transistor, a collector connected to the output node of the stage and a base connected through a biasing resistance to the supply rail on the stage. The protection transistor may be formed within the same pocket containing an interdigitated structure of the output power transistor, thus reducing the area requirement for the protection device. IMAGE