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:
Aug. 28, 1979
Filed:
Oct. 20, 1975
Applicant:
Inventor:
Frederik J Van Roessel, Upper Saddle River, NJ (US);
Assignee:
North American Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315370 ; 315403 ;
Abstract
A deflection circuit has a switching transistor to switch current from a supply transistor through deflection coils. Both the base and collector current of the supply transistor are sensed to eliminate temperature variations in a linearity correction circuit. The deflection coils have series transformers coupled to them for individual linearity correction. This enables higher values of variable resistors to be used, thus eliminating contact potential problems.