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:
Oct. 02, 2012
Filed:
Sep. 21, 2010
Walter Crewson, Ridgefield, CT (US);
Mark H. Kaltenborn, Ridgefield, CT (US);
Walter Crewson, Ridgefield, CT (US);
Mark H. Kaltenborn, Ridgefield, CT (US);
Scandinova Systems AB, Uppsala, SE;
Abstract
A transmission delay line is introduced between the switch and the power output side of a power switching system so that sparking of the load is hidden from the switch by the time delay of the transmission line. This makes it possible to detect the load spark and actively protect the switch, typically by turning the switch off, before it actually knows that there has been a load fault spark. Alternatively, the delay of the transmission line is long enough so that the switch has already been turned off in normal pulse operation before the load fault current reaches the switch. Either way, the switch will be turned off under normal current flow and will not be subject to destructive over-current or over-voltage conditions.