Circuit for actuating a monostable or bistable inductive device

Details Circuit for actuating a monostable or bistable inductive device Circuit for actuating a monostable or bistable inductive device

1974-06-24

1976-04-06

Smith, Jr., David

Electrical transmission or interconnection systems

Combined impedance and switch systems

318229, H01H 4702, H01H 5134

Patent

active

039492397

ABSTRACT:
This relates to an ac circuit for actuating a monostable or bistable inductive device in response to the opening of a normally closed switch. A capacitor is provided in series with the parallel combination of an inductive switching element and a normally-closed switch. When the normally closed switch opens, there results a series circuit consisting of the inductive switching element and the capacitor which, when properly chosen, will have a capacitive reactance which substantially cancels the inductive reactance of the switching element, thereby substantially reducing the overall circuit impedance. This clearly reduces heat dissipation and insures sufficient voltage across the inductive element to cause actuation.

REFERENCES:
patent: 3080491 (1963-03-01), Howell

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