Power supply for a microwave magnetron
US3973165A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1975 |
| Grant date | Aug 3, 1976 |
| Priority date | — |
| Expiry date | Apr 28, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/662
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a microwave energy generating system, a combination of a magnetron which generates microwave energy and an inverter which converts DC voltage to high frequency AC voltage are employed. The magnetron includes a heater-cathode and an anode. The inverter includes a transformer having a gapped ferrite core, a center tapped primary winding which divides the primary into two portions, and at least a first high voltage secondary winding and a second low voltage secondary winding for the magnetron heater, and means for switching current through each winding half alternately at a periodic high frequency rate, substantially above 60 Hz., to produce a high frequency magnetic field in said ferrite core, and means, including inductor means, are provided for providing DC current into said primary winding at said center tap. High frequency high voltage AC from the first secondary is rectified and coupled to the magnetron and high frequency low voltage AC is coupled from the second secondary to the magnetron heater to enable the magnetron to generate microwave energy. The pulsing/nature of the high voltage applied to the magnetron is believed to avoid "mismoding" of the magnetron and a need for…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.