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:
Feb. 03, 1981
Filed:
Jan. 09, 1979
Applicant:
Inventors:
Assignee:
Shinko Electric Co., Ltd., Mie, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21913051 ;
Abstract
A circuit for a high frequency arc welding apparatus which can control the welding current by keeping the peak value, that is the amplitude of the pulse component, of the welding current waveform constant and improve operating efficiency and reliability. The circuit includes a D.C. electrical source for welding and a condenser for regenerating. The welding current is controlled by controlling the voltage of the condenser. A low frequency switch periodically discharges the condenser to limit the voltage of the condenser and to transfer the stored energy of the condenser to the electrical source.