Electricity: measuring and testing – Electromechanical switching device – Relay
Patent
1990-02-16
1991-07-02
Wieder, Kenneth
Electricity: measuring and testing
Electromechanical switching device
Relay
340644, G01R 3132
Patent
active
050288733
ABSTRACT:
The disclosure describes a tester for determining the operating condition of a Reed Relay Printed Circuit Board (PCB) device. A Reed Relay PCB to be tested is connected directly to the tester for testing in a data flow per path environment as it would be functionally connected with a data acquisition system, such as a "Ramp Scanner" model 128RR by Kaye Instruments, Inc. The tester develops accurate voltages for the test and connects them for powering components as well as for simulating data flow. As each data flow path is sequenced in its turn, the time of opening of a previous relay contact as a next contact is closed is monitored, and if it exceeds a predetermined amount of time, a visual indicator light is energized and latched in its energized state. Also, the tester includes other test circuits for testing the operating functionality of each data flow path.
REFERENCES:
patent: 2833983 (1958-05-01), Shaw
patent: 3235794 (1966-02-01), Henderson
patent: 3492565 (1970-01-01), Harman et al.
patent: 3803480 (1974-04-01), Goldbach
patent: 3823366 (1974-07-01), Fabry
patent: 4769596 (1988-09-01), Faucett
patent: 4845475 (1989-07-01), Cooledge et al.
"Testing the Sequence of Operation of Switch Contacts" J. J. Hayes Technical Digest No. 58, Apr. 1980.
Regan Maura K.
Southwest Research Institute
Wieder Kenneth
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