Circuit protection arrangement

Details Circuit protection arrangement Circuit protection arrangement

1987-09-03

1989-02-21

Envall, Jr., Roy N.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361 91, 361111, 361117, H02H 320

Patent

active

048070815

ABSTRACT:
An arrangement for protecting an electrical circuit from a voltage transient having a fast rise time, e.g. in the order of 20 Vns.sup.-1 comprises a number of semiconductive threshold foldback switching elements preferably formed from a chalcogenide glass, in parallel with one another between the current carrying line of the circuit and earth. An additional, non-linear, circuit protection device is connected in parallel with the switching element between the current carrying line and earth, in order to pass high frequency components of the transient to earth.

REFERENCES:
patent: 3343085 (1967-09-01), Oushinsky
patent: 3558830 (1971-01-01), Bender
patent: 4023071 (1977-05-01), Fussell
patent: 4212045 (1980-07-01), Mortzloff
patent: 4271446 (1981-06-01), Comstock
patent: 4326232 (1982-04-01), Nishiwaki et al.
patent: 4390919 (1983-06-01), Leniski
patent: 4463406 (1984-07-01), Sirel
patent: 4571656 (1986-02-01), Ruckman
patent: 4586104 (1986-04-01), Standler
"Electric field Induced Memory Switching in thin Films of Chalcogenide System Ge-As-Se" by Pinto et al. 7-1971.
"Physics of Disordered Materials" Ed. by Adler, Fritzuche and Ovshinsky 1985 pp. 779-791.

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