Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1975-09-08
1976-07-06
Miller, J D
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
317 31, 317 33SC, 317 50, 307 93, 323 22SC, H02H 320, H02H 308
Patent
active
039684075
ABSTRACT:
A redundant intrinsic safety barrier with input and output terminals and circuit common connecting a plurality of signal lines. Input and output directors connect respectively to the input and output terminals. The directors are connected to each other and each of the directors provides dual unidirectional current paths from one of the input or output terminals to circuit common. Unidirectional current latching means in each current path provide a high impedance gap for voltage magnitudes below a predetermined value, and the latching means are self-latched into a low impedance bridge for current magnitudes above the predetermined value. Fused means in series with the input and output directors open the circuit therebetween when current in a certain time period exceeds the predetermined value by a certain selected amount.
REFERENCES:
patent: 3878434 (1975-04-01), Voorhoeve
Bednar Emil J.
Miller J D
Petrolite Corporation
Salce Patrick R.
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