The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 1977
Filed:
Jul. 24, 1975
Robert Virgil Burke, Fort Wayne, IN (US);
Thomas Eugene Hester, Fort Wayne, IN (US);
Litton Systems, Inc., Huntington, IN (US);
Abstract
A microwave magnetron operating circuit includes a high leakage reactance transformer having a secondary winding a capacitor connected in series with the secondary winding and means connecting the series combination of capacitor and secondary winding across heater cathode and anode terminals of a magnetron. A controlled semi-conductor switch such as a triac is connected electrically in shunt of the magnetron. Control means are provided to operate the triac to its current conducting state so as to conduct current in shunt of the magnetron. The control means includes a positionable control member, accessible to the user, for varying the time at which the controlled semi-conductor device is placed in its electrically conductive state so as to permit the user to adjust or set the power supplied to the magnetron to various different power levels.