Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1979-05-29
1981-02-03
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361203, H01H 4732
Patent
active
042492254
ABSTRACT:
Means for biasing and driving magnetic field transducers in which the D.C. ias and the information bearing A.C. modulation signal are derived from the same power supply. The drive circuitry, by changing characteristics external to the power supply, enables both the A.C. and D.C. current to flow from a common source through the transducer with the elimination of associated de-coupling networks required for separate A.C. and D.C. supplies.
REFERENCES:
patent: 3745420 (1973-07-01), Hafner
patent: 3870931 (1975-03-01), Myers
Lall Prithvi C.
McGill Arthur A.
Moose Jr. Harry E.
Sciascia Richard S.
The United States of America as represented by the Secretary of
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