Power supplier for magnetron
First Claim
1. A power supplier which converts A.C. power supplied from a commercial A.C. power source to high voltage D.C. power to be supplied to a magnetron, comprising:
- (a) a switch means for connecting said power supplier to said commercial A.C. power source;
(b) a first rectifying means connected to said switch means for producing a D.C. voltage from said commercial A.C. power source;
(c) a resonance circuit having an inductive element and a capacitive element connected in series;
(d) at least one thyristor switching circuit connected in series with said resonance circuit and further connected to said first rectifying means, for providing said D.C. voltage to said resonance circuit when triggered;
(e) a trigger circuit connected to said thyristor switching circuit for triggering said thyristor switching circuit and causing said thyristor switching circuit to conduct;
(f) a step-up transformer having the primary winding serving as the main part of said inductive element in said resonance circuit, at least one secondary winding generating high voltage energy and a nonsaturable core; and
(g) a second rectifying means connected to said secondary winding of said step-up transformer for producing a D.C. voltage to supply the magnetron.
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Accused Products
Abstract
The present disclosure relates to a power supplier for a magnetron for use in electric appliances, such as a microwave oven. The power supplier of the present disclosure has a solid state frequency converter which changes commercial A.C. power to A.C. power at a high frequency, which A.C. power is increased in voltage in a step-up transformer and then fed to the magnetron. The power supplier further has a control system which stabilizes the power to be applied to the magnetron with respect to a preselected reference level and a power supplier protecting circuit for protecting the power supplier from an unexpected low voltage occurring in the commercial power source.
85 Citations
11 Claims
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1. A power supplier which converts A.C. power supplied from a commercial A.C. power source to high voltage D.C. power to be supplied to a magnetron, comprising:
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(a) a switch means for connecting said power supplier to said commercial A.C. power source; (b) a first rectifying means connected to said switch means for producing a D.C. voltage from said commercial A.C. power source; (c) a resonance circuit having an inductive element and a capacitive element connected in series; (d) at least one thyristor switching circuit connected in series with said resonance circuit and further connected to said first rectifying means, for providing said D.C. voltage to said resonance circuit when triggered; (e) a trigger circuit connected to said thyristor switching circuit for triggering said thyristor switching circuit and causing said thyristor switching circuit to conduct; (f) a step-up transformer having the primary winding serving as the main part of said inductive element in said resonance circuit, at least one secondary winding generating high voltage energy and a nonsaturable core; and (g) a second rectifying means connected to said secondary winding of said step-up transformer for producing a D.C. voltage to supply the magnetron. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification