Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1991-09-19
1993-11-30
Voeltz, Emanuel T.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 21, 363133, 323266, 323299, H02M 540, G05F 500
Patent
active
052671348
ABSTRACT:
A voltage and frequency converter device for converting a primary voltage and frequency from an electrical supply to a secondary voltage and frequency particularly useful in powering the timing mechanisms in appliances made to operate at the secondary voltage and frequency, includes a rectifier circuit for converting the alternating current oscillating at the primary frequency to direct current, circuitry for causing the current to oscillate at the second frequency and for converting the primary voltage to the secondary voltage. The output of the converter is preferably coupled only between the power source and the timing circuitry of the appliance but may also be coupled to the power circuitry for motors and the like provided the converter is further configured to generate a true sine wave output. The invention further includes a wiring configuration for a dwelling whereby the voltage and frequency converter is interconnected between the power source and the electrical wiring of the dwelling to provide the secondary voltage and frequency to at least one secondary outlet and the primary voltage and frequency to at least one primary outlet in the dwelling whereby electrical appliances which are made to operate on the secondary voltage and frequency can be utilized in the dwelling.
REFERENCES:
patent: 3530350 (1970-09-01), Gawron et al.
patent: 4533986 (1985-08-01), Jones
patent: 4697136 (1987-09-01), Ishikawa
patent: 4996462 (1991-02-01), Krummel
"Switching scheme matches supply to mains", Design Ideas; EDN; Jan. 21, 1981, vol. 26, No. 2, Donald Brown, p. 153.
"Universal input adds flexibility to switching supplies", Electronic Product Power Supplies; Mar. 1990; pp. 29-31.
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