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:
May. 08, 1979
Filed:
Jun. 16, 1977
Applicant:
Inventor:
Daniel I Pomerantz, Lexington, MA (US);
Assignee:
P. R. Mallory & Co. Inc., Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323 21 ; 3072 / ; 323 24 ;
Abstract
Power is applied to an AC load at the crest of a voltage waveform by employing a light emitting diode. The crest firing circuit further includes a detector responsive to the diode's light emitting properties which fires a semiconductor switching device thereby activating the AC load.