Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means
Patent
1982-02-09
1984-01-03
Eisenzopf, Reinhard J.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Load shunting by fault responsive means
361 91, 361100, H02H 900
Patent
active
044245440
ABSTRACT:
An optically toggled bidirectional normally-on switch is provided with protection against bilateral voltage and bidirectional current surges by the inclusion of a pair of oppositely poled thyristors. One version uses a large junction-type field-effect transistor in its main path and a pair of smaller junction-type transistors in the subsidiary path. A photodiode array controls the gate voltage on each of the transistors and turns them off when illuminated. A control node in the subsidiary path is connected to the gates of the SCRs so that excess current in this path turns on the appropriately-poled thyristor to provide an additional shunt path for the current.
REFERENCES:
patent: 3504233 (1970-03-01), Hurtle
patent: 4144477 (1979-03-01), Eaton
patent: 4217618 (1980-08-01), Kellenbenz et al.
patent: 4227098 (1980-10-01), Brown et al.
patent: 4307298 (1981-12-01), El Hamamsy et al.
patent: 4331884 (1982-05-01), Svedberg
Chang Gee-Kung
El Hamamsy Mahmoud A.
Hartman Adrian R.
Lorimor Orval G.
Bell Telephone Laboratories Incorporated
Eisenzopf Reinhard J.
Torsiglieri Arthur J.
LandOfFree
Optically toggled bidirectional switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optically toggled bidirectional switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optically toggled bidirectional switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1034227