Antisaturation circuit for integrated PNP transistor

Details Antisaturation circuit for integrated PNP transistor Antisaturation circuit for integrated PNP transistor

1986-05-07

1987-10-20

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307280, 307255, 307540, 307557, H03K 333

Patent

active

047016388

ABSTRACT:
An antisaturation circuit for an integrated PNP transistor, having a generic current generator in the base branch of the bias circuit capable of limiting the maximum base current, comprises two NPN transistors, a diode and a voltage divider formed by two resistors, and permits to limit the base current of the PNP transistor below the maximum value, set by the current generator, every time the voltage across the base-collector junction of the PNP transistor exceeds a certain preset value thus preventing saturation or limiting it.

REFERENCES:
patent: 4021687 (1977-05-01), Yoshimura
patent: 4382195 (1983-05-01), Pohl et al.

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