Intrinsically safe signal coupler

Details Intrinsically safe signal coupler Intrinsically safe signal coupler

1983-04-14

1985-12-03

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

Of storage or hazardous area or fluid handling

73290V, H05F 100

Patent

active

045569274

ABSTRACT:
Energy limiting, bidirectional signal passage, bandpass filtering, and DC isolation is provided in an intrinsically safe manner, for electrical signals coupled between various electrical equipment located both outside and within a storage tank containing highly combustible matter, for example, via apparatus including a ferrite core transformer potted within a cavity of an explosion proof housing mounted upon a wall of the tank, whereby one winding of the transformer is connected to the outside equipment, and another winding of the transformer is connected to equipment located within the tank.

REFERENCES:
patent: 2787160 (1957-04-01), Van Valkenburg
patent: 3931601 (1976-01-01), Anderson
patent: 4009419 (1977-02-01), Ligman
patent: 4130018 (1978-12-01), Adams et al.
patent: 4222089 (1980-09-01), MacAskill, Jr. et al.
patent: 4231112 (1980-10-01), Massa
patent: 4364117 (1982-12-01), Snow
patent: 4427132 (1984-01-01), Thomson

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