Circuit to prevent operation error of bipolar transistor operating in saturation region

摘要

The present invention relates to a static electricity protection circuit between the two power sources that can increase the operating range between the two power sources.;The base is open, the collector is connected to the first supply voltage (Vdd), the emitter is connected to the ground voltage (Vss), the first bipolar transistor (Q1), the cathode (Cathode) is connected to the first supply voltage (Vdd), and the anode ( A second bipolar transistor Q2 having an anode connected to the ground voltage Vss, a base open, a collector connected to a second supply voltage Vee, and an emitter connected to a ground voltage Vss; A cathode is composed of a second diode D2 connected to a second supply voltage Vee and an anode connected to a ground voltage Vss.