Electricity: power supply or regulation systems – Remote sensing
Patent
1973-11-16
1977-01-04
Pellinen, A. D.
Electricity: power supply or regulation systems
Remote sensing
321 18, 323 22T, 323 39, G05F 500
Patent
active
040016684
ABSTRACT:
A motor-driven electric shaver operable over a wide range of alternating line voltages includes a capacitor for supplying unidirectional current to the motor. The capacitor is periodically charged through a current switching device serially located between the line and the capacitor. The switching device is rendered conductive only when the instantaneous voltage level of the applied line current is less than a predetermined level such that the average voltage developed across the capacitor and applied to the motor corresponds to the nominal requirements of the motor. Since the switching device is operated in either a saturated or nonsaturated state, power dissipation within the shaver is minimized.
REFERENCES:
patent: 3214668 (1965-10-01), Brinster
patent: 3376496 (1968-04-01), Lund et al.
patent: 3383563 (1968-05-01), Wright
Pellinen A. D.
Schick Incorporated
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