Bipolar transistor switching enhancement circuit

Details Bipolar transistor switching enhancement circuit Bipolar transistor switching enhancement circuit

H - Electricity

03

K

328/127

H03K 17/04 (2006.01) H03K 5/01 (2006.01) H03K 5/02 (2006.01) H03K 19/003 (2006.01) H03K 19/01 (2006.01) H03K 19/013 (2006.01) H03K 19/018 (2006.01) H03K 19/082 (2006.01)

Patent

CA 1271235

BIPOLAR TRANSISTOR SWITCHING ENHANCEMENT CIRCUIT ABSTRACT OF THE DISCLOSURE A line driver circuit capable of operating at high speeds. The output transistor, an emitter con- nected to an output terminal, has a special feedback capacitor connected to its base. The feedback capacitor helps pull the output terminal high to increase the switching speed of the line driver cir- cuit. Special current injection and removal techniques are used to speed the switching times of the PNP current supply transistors. The line driver circuit also has special circuitry to limit the output current from exceeding certain limits and for keeping the line driver circuit from overheating.

551694

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