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:
Jan. 26, 1988
Filed:
May. 26, 1987
Applicant:
Inventors:
Wilfried Eisenberg, Remscheid, DE;
Edmund Zok, Remscheid, DE;
Assignee:
AEG-Elotherm GmbH, Remscheid-Hasten, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 95 ; 361100 ; 361 87 ;
Abstract
The apparatus relates to an excess-current monitoring device in a direct-current generator having a controlled rectifier, and is particularly useful for electro-chemical machining. A reference signal is generated by a signal generator in accordance with the voltage drive of the rectifier and the mean current supplied to the load. The reference signal is supplied to a comparator which supplies a current-switch-off-signal when the value of the reference signal as compared to the instantaneous load current indicates excess mean load current. This enables optimum machining.