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:
Jun. 29, 1982
Filed:
May. 01, 1981
Michael H Kalmanash, Fairfield, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
An improved sequential color switch for a beam penetration CRT includes a high voltage power supply and a high voltage transformer. A feedback circuit senses the DC level in the signal waveform applied to the transformer and feeds it back to the input of a driver. A low-pass filter connected to the input of the driver also senses the DC level in the signal waveform applied to the driver and adjusts the reference input of the high voltage power supply to correspondingly change its DC high voltage output level. Essentially, this removes any DC level from the primary winding of the high voltage transformer while at the same time adjusting the output level of the high voltage power supply connected to the secondary winding of the transformer by an amount which is proportional to the average DC level of the input signal waveform.