Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1975-10-21
1976-12-14
Miller, Jr., Stanley D.
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307303, 307318, H03K 1700
Patent
active
039978028
ABSTRACT:
This relates to a temperature-compensated zener diode arrangement in the form of a semiconductor integrated circuit which consists of several transistor structures disposed in a common semiconductor body and interconnected by deposited metallizations. The base-emitter pn junctions of the transistor structures are so connected in series with respect to the direction of the total current flowing during operation that some of them are operated in the reverse direction up to the breakdown region as zener diodes and the remainder in the forward direction as forward bias diodes. The emitter of the first transistor structure acting as a zener diode or the base of a transistor structure acting as a forward bias diode, as well as the collector of the latter transistor structure, are connected to the first external terminal. The emitter of the latter transistor structure, acting as a forward bias diode, is connected to the second external terminal. The transistor structures acting as zener diodes are disposed in a first isolating island of the semiconductor body and the transistor structures acting as forward biased diodes are disposed in additional isolating islands.
REFERENCES:
patent: 3400306 (1968-05-01), Knauss
patent: 3567965 (1971-03-01), Weinerth
patent: 3596115 (1971-07-01), Conzelmann
patent: 3780322 (1973-12-01), Walters
Davis B. P.
Ingrassia Vincent
IT&T Industries, Inc.
Miller, Jr. Stanley D.
O'Halloran John T.
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