Electronic safety circuits

Details Electronic safety circuits Electronic safety circuits

1974-12-13

1976-12-21

Envall, Jr., R. N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

317148, 317 18R, 307 88R, 321 11, 323 58, 323 48, H02H 324, H02H 316

Patent

active

039991040

ABSTRACT:
Electronic safety circuit intended to produce an output signal in the event of wearing out or failure of one of its components, the circuit comprising a magnetic circuit having a rectangular hysteresis cycle, a control circuit connected to the magnetic circuit and to the other components which are under surveillance, this control circuit acting in a balanced fashion on the magnetic circuit when all the components of the circuit under surveillance function normally, but producing an unbalanced action when at least one of these components is defective, and an output circuit producing an output signal in the event of an unbalanced action on the magnetic circuit.

REFERENCES:
patent: 2894180 (1959-07-01), Price
patent: 3182229 (1965-05-01), Wesslund
patent: 3214601 (1965-10-01), Christopherson
patent: 3229112 (1966-01-01), Hagland et al.
patent: 3806792 (1974-04-01), Untamo

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