Darlington transistor switching circuit for reactive load

Details Darlington transistor switching circuit for reactive load Darlington transistor switching circuit for reactive load

1975-08-28

1977-03-22

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307270, 361 91, 357 46, H03K 326, H03K 1756, H03K 1908

Patent

active

040139042

ABSTRACT:
A Darlington transistor circuit for switching a reactive load is disclosed. The input transistor is selected to have a sustaining or breakover voltage appreciably less than the output transistor such that the circuit operates with the input transistor in an unclamped mode and the output transistor clamped by the input transistor below its sustaining voltage level to prevent secondary breakdown of the output transistor caused by the swicthing off of the transistor circuit.

REFERENCES:
patent: 3126490 (1964-03-01), Stern
patent: 3210561 (1965-10-01), Ullman
patent: 3344321 (1967-09-01), Sumilas
patent: 3435295 (1969-03-01), Ladd, Jr. et al.
patent: 3588851 (1971-06-01), Jordan, Jr.
patent: 3829708 (1974-08-01), Grunleitner et al.
"Of the Darlington Pair" by Walters in Solid State Design, vol. 3, No. 6, June 1962 pp. 47-48.

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