Error detector circuit for indication of low supply voltage

Details Error detector circuit for indication of low supply voltage Error detector circuit for indication of low supply voltage

1992-01-27

1994-08-23

Callahan, Timothy P.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307255, 3072964, 307300, 307363, H03K 524, H03K 333

Patent

active

053410386

ABSTRACT:
An error detection circuit having an output transistor of one conductivity type and a sense transistor and error detector transistor of an opposite conductivity type. An input voltage is provided at the collector of the output transistor and an output voltage is taken from the emitter of the output transistor. An emitter of the sense transistor is connected to the input voltage and the collector of the sense transistor is connected to the base of the output transistor. An emitter of the error detector transistor is connected to the collector of the sense transistor and a base of the error detector transistor is connected to the base of the sense transistor. The error detector transistor conducts when the sense transistor saturates indicating that the input voltage and output voltage have come within a predetermined voltage of one another.

REFERENCES:
patent: 3231752 (1966-01-01), Jacob
patent: 3588538 (1971-06-01), Picillo
patent: 3588544 (1971-06-01), Wallingford
patent: 4086503 (1978-04-01), Fox et al.
patent: 4237388 (1980-12-01), Nokubo et al.
patent: 4371792 (1983-02-01), Dobkib
patent: 4598213 (1986-07-01), Marley et al.
patent: 4827156 (1989-05-01), O'Neill
patent: 4967106 (1990-10-01), Tamegaya
patent: 5159211 (1992-10-01), Fujii
patent: 5248932 (1993-09-01), Prentice

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