Electricity: measuring and testing – Electromechanical switching device
Patent
1989-11-14
1990-10-02
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Electromechanical switching device
324418, 361186, 361187, G01R 3100, H01H 4700
Patent
active
049610511
ABSTRACT:
By providing control logic for initiating a predetermined test sequence depending upon the known state of a relay, a unique testing circuit is attained whereby the relay drivers connected to the opposed sides of the relay coil are fully evaluated without causing the relay to be activated. In the preferred embodiment, the relay comprises a latching-type relay and the relay drivers comprise separate high-power CMOS devices. In this configuration, the control logic separately activates each transistor of each of the high-power CMOS devices without causing the relay to be switched between its two alternate configurations. Furthermore, the control logic originally sets the latching-type relay into one of its two configurations and then shuts off the power until activated for initiating the test sequence. In addition, the control logic is employed to check each transistor during the test sequence and assure its operation.
REFERENCES:
patent: 3548301 (1970-12-01), Zutkis
patent: 3599179 (1971-08-01), Arnold
patent: 3633016 (1977-01-01), Walker et al.
patent: 3924178 (1975-12-01), Lockyer et al.
patent: 4696785 (1987-09-01), Cook et al.
patent: 4701635 (1987-10-01), Kawazoe et al.
patent: 4764884 (1988-08-01), Noyori
Alcatel NA, Inc.
Eisenzopf Reinhard J.
Harvey Jack B.
Van Der Sluys Peter C.
LandOfFree
Non-actuating relay driver tester does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-actuating relay driver tester, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-actuating relay driver tester will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-294548