Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1987-10-05
1989-01-10
Hix, L. T.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361203, H01H 4712, H01H 4732
Patent
active
047977795
ABSTRACT:
A power supply for controlling a solenoid actuated lock includes high and low frequency pulse generators, the outputs of which control a switching transistor. The low frequency pulses seat the solenoid plunger, and the high frequency pulses maintain the plunger in the seated position.
REFERENCES:
patent: 3371252 (1968-02-01), James
patent: 3579052 (1971-05-01), Toyohashi-shi et al.
patent: 4593543 (1986-06-01), Stefanek
patent: 4636912 (1987-01-01), Ohtani
Brochure; Schlage Electronics-Model 700 Hardware Drive Module.
Brochure-Synektron Corporation, Model 10-G100C17 Controlled Field Actuator.
Article-Electronic Products pp. 60-62 (undated).
Richards James A.
Stefanek Ronald T.
Folger Adam Company
Hix L. T,.
Porterfield David
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