Transistor comparator circuit having split collector feedback hy

Details Transistor comparator circuit having split collector feedback hy Transistor comparator circuit having split collector feedback hy

1987-01-02

1988-01-05

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307362, 3072993, H03K 524, H03K 5153

Patent

active

047178396

ABSTRACT:
A comparator circuit responsive to an applied input signal passing through a threshold voltage for providing output signal transitions which comprises circuitry for generating a controllable threshold voltage, comparing circuitry including a first multi-collector transistor which is switched on and off as the input signal passes through the threshold voltage level and which has a collector coupled to the threshold voltage circuitry for sourcing current thereto when the transistor is turned on and the threshold voltage producing circuitry being responsive to the current sourced from the transistor for increasing the magnitude of the threshold voltage, the threshold voltage being supplied to the comparing circuitry.

REFERENCES:
patent: 4184087 (1980-01-01), Nutz
patent: 4259601 (1981-03-01), Stein
patent: 4375598 (1983-03-01), Sakai

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