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:
Jun. 24, 2003
Filed:
Nov. 01, 2001
Applicant:
Inventors:
Asko Juntunen, Oulu, FI;
Mika Niskanen, Tupos, FI;
Assignee:
IWS International Oy, Oulu, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/20 ;
U.S. Cl.
CPC ...
H02H 3/20 ;
Abstract
The object of the invention is a control circuit for eliminating a voltage and current spike from a circuit formed by a switching transistor (T ) and a load (L). The base control of the switching transistor (T ) is arranged to be dependent on the voltage of the switching transistor's DRAIN (collector) which is forced, by means of the control circuit, to follow a predetermined desired value or wave form.