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. 26, 1976
Filed:
Mar. 04, 1975
Applicant:
Inventors:
Assignee:
Ernst Leitz G.m.b.H., , DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03D / ; H03K / ;
U.S. Cl.
CPC ...
328 61 ; 328 16 ; 328133 ; 328138 ; 328140 ; 328167 ; 250232 ;
Abstract
A method for generating switching signals from an alternating current containing a harmonic or from a mixture of at least two alternating currents containing harmonics with adjacent fundamentals, characterized in that one even and one odd harmonic is filtered from the frequency range, then they are amplified, rectified and compared, and a switching signal is generated when a given and adjustable ratio is achieved between these two potentials, for instance when the ratio is unity.