Monolithic integrated threshold switch

Details Monolithic integrated threshold switch Monolithic integrated threshold switch

1976-05-20

1982-08-24

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307289, 307299B, 357 92, H03K 5153, G01R 19165, G01R 19175

Patent

active

043463134

ABSTRACT:
This invention relates to a monolithically integrated threshold switch which switches on at an upper voltage value of a hysteretic characteristic and switches off at a lower voltage value especially adapted to I.sup.2 L ICs. Over a resistance the value of which determines the upper voltage value the input is fed to the base of a first transistor which has no injector nor current feeding, and to a first collector of a multicollector transistor the base of which is fed to its second collector and to a current source. Any output signal may be derived from any additional collector of one of the two transistors.

REFERENCES:
patent: 3942044 (1976-03-01), Armstrong

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