Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Patent
1978-02-16
1980-07-29
Smith, Jr., David
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
For relays or solenoids
318332, 318346, 318520, 335154, 361155, H01H 4704, H01H 4706
Patent
active
042153832
ABSTRACT:
The present invention relates to an electrical circuit for current regulation in DC motors including a sensitivity control means therefor. The circuit includes a means for sensing a predetermined current level in the load of a DC motor. In combination therewith is a subcircuit for cutting-off the load current when the predetermined current level has been reached. Additionally, there is provided means for restoring the load current when, after load current cutoff, the inductive motor current has fallen to a level sufficient to restart the subcircuit.
REFERENCES:
patent: 2724081 (1955-11-01), De la Source
patent: 3174008 (1965-03-01), Mishelevich et al.
patent: 3569807 (1971-03-01), Ulrich
patent: 3634794 (1972-01-01), Verbeke
Boyd Robert L.
Fleming Joseph W.
Gandhi Mahendra A.
Ramsey Controls, Inc.
Silverman Mel K.
Smith Jr. David
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