Power supply for a magnetron having a rectifying circuit, switch

Details Power supply for a magnetron having a rectifying circuit, switch Power supply for a magnetron having a rectifying circuit, switch

1988-05-02

1989-12-12

Leung, Philip

Electric heating

Metal heating

Of cylinders

219 1055R, 363 21, 315106, 336182, H05B 668

Patent

active

048869511

ABSTRACT:
A power supply for a magnetron includes a rectifying circuit, a switching circuit, and a transformer. The rectifying circuit converts an ac-power source signal into a dc-power source signal. The switching circuit converts the dc-power source signal output from the rectifying circuit into a high-frequency signal in accordance with a driving circuit. A transformer connected to the switching circuit converts the high-frequency signal into a high-voltage high-frequency signal for driving the magnetron. The transformer includes a primary winding connected to the switching circuit, a secondary winding connected to the magnetron, a tertiary winding connected to a cathode heater of said magnetron, and a fourth winding connected to the driving circuit. The coupling coefficient between the fourth winding and the second winding is larger than the coupling coefficient between the fourth winding and the primary winding.

REFERENCES:
patent: 3973165 (1976-08-01), Hester
patent: 4076996 (1978-02-01), Maehara et al.
patent: 4318165 (1982-03-01), Kornrumpf et al.
patent: 4620078 (1986-10-01), Smith
patent: 4631511 (1986-12-01), Sylvester et al.
patent: 4704674 (1987-11-01), Maehara et al.

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