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:
Sep. 24, 1996
Filed:
Sep. 06, 1994
James L Cooper, Everett, WA (US);
Mark Adams, Arlington, WA (US);
ELDEC Corporation, Lynnwood, WA (US);
Abstract
Cascaded transistor stages are connected between a high voltage and a resistance coupled to a lower potential. The transistor stage closest to the lower potential is referred to as a driver stage, and all the other transistor stages are referred to as component stages. When an enable signal is provided to the driver stage, the stages sequentially enter conduction, starting with the driver stage and proceeding to the component stage coupled to the high voltage. The current flow through the driver stage is regulated, proportional to the value of the series resistance, and remains relatively constant as the high voltage is brought to close to the lower potential. The voltage drop is smooth and approximately linear, ensuring that voltage ringing or rebound does not occur following the discharge. After the high voltage is brought to the lower potential, the transistor stages remain in conduction as determined by the presence of the enable signal, to discharge any remaining high voltage that may be attached through a high series impedance. Upon removal of the enable signal, the transistor stages no longer conduct.