Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1974-12-30
1976-09-07
Goldberg, Gerald
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307252UA, 321 20, 323 23, 323 45, H02P 1324, G05F 500
Patent
active
039796612
ABSTRACT:
A power supply apparatus having minimal power dissipation for supplying a substantially constant voltage regardless of the variation of an input voltage. A transformer having primary and secondary windings is provided to receive an input voltage and to produce an output voltage from which the substantially constant voltage is derived. The turns ratio of the transformer is varied in response to variations in the amplitude of the input voltage which exceed a predetermined range such that the turns ratio is reduced when the input voltage is increased and the turns ratio is increased when the input voltage is reduced. In one embodiment of this invention, when the supplied substantially constant voltage exhibits variations of greater than predetermined magnitude, an audio signal processing circuit which is powered by the substantially constant voltage is substantially disabled.
REFERENCES:
patent: 2763831 (1956-09-01), Ulga
patent: 3195036 (1965-07-01), McNulty et al.
patent: 3365654 (1968-01-01), Johnston
patent: 3408558 (1968-10-01), Peterson et al.
patent: 3470444 (1969-09-01), Bixby
patent: 3571698 (1971-03-01), McCabe
Dictaphone Corporation
Goldberg Gerald
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