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:
Dec. 11, 2001
Filed:
Oct. 31, 2000
Roger N. Hitchcock, San Leandro, CA (US);
Varian Medical Systems, Inc., Palo Alto, CA (US);
Abstract
A switching circuit for selectively discharging energy from a pulse forming network (PFN) or capacitor in the form of pulses is described. The switching circuit is comprised of a high power solid state switch configured to selectively discharge energy from the PFN or capacitor to the input of a transformer. Disposed between the PFN and the transformer is a magnetic assist switch, which improves the operating characteristics of the solid state switch. Directly connected to the magnetic assist switch is a reset bias circuit, which provides a reset bias signal and improves the operating characteristics of the assist switch. The same circuit, connected to a turn of the assist switch, also provides a bias reset signal to the transformer, thereby eliminating the need for additional bias circuitry for that component.