Base current-control circuit of an output transistor

Details Base current-control circuit of an output transistor Base current-control circuit of an output transistor

1994-01-27

1996-01-23

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327312, 327478, 327538, H03K 1716, H03K 1760

Patent

active

054867819

ABSTRACT:
A base current-control circuit comprises a detector for detecting a load current of the output transistor and for enabling the circuit to generate a detected current proportional to the load current. A base current-control voltage generator generates a voltage as a function of the detected current, and a switch generates ON/OFF signals. A base current generator utilizes the voltage to generate a base current in response to the ON/OFF signals generated by the switch to drive the output transistor.

REFERENCES:
patent: 4213068 (1980-07-01), Ahmed
patent: 4952827 (1990-08-01), Leipold et al.
patent: 5021687 (1991-06-01), Yarbrough et al.
patent: 5271399 (1993-12-01), Tihanyi et al.
patent: 5272392 (1993-12-01), Wong et al.

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