Schmitt voltage comparator

Details Schmitt voltage comparator Schmitt voltage comparator

1991-01-16

1992-11-10

LaRoche, Eugene R.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307290, 307495, 330253, H03K 5153, H03K 329, H03K 522, H03F 345

Patent

active

051626713

ABSTRACT:
A differential amplifier pair includes first and second transistors emitters of which are connected to each other. A first current source is connected to a common emitter connection point of the first and second transistors. A source of a first MOS transistor is connected to a collector of the first transistor, and a source of a second MOS transistor is connected to a collector of the second transistor. Drains of the first and second MOS transistors are commonly connected to each other, and a second current source is connected to a common drain connection point. The first and second MOS transistors are selectively controlled to be turned on in accordance with an output from the differential amplifier pair.

REFERENCES:
patent: 3725673 (1973-04-01), Frederiksen et al.

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