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:
Jul. 14, 1987
Filed:
Mar. 28, 1986
William V Fitzgerald, Indianapolis, IN (US);
Ronald E Fernsler, Indianapolis, IN (US);
Kevin E Nortrup, Indianapolis, IN (US);
RCA Corporation, Princeton, NJ (US);
Abstract
An input signal for controlling a television power supply has 'power-on' and 'power-off' signal states. When the input signal is in the 'power-on' state, it couples a clock signal to a primary winding of a transformer causing an alternating current voltage that is conductively isolated from the input signal to be developed across a secondary winding of the transformer. When the input signal is in the 'power-off' state, it decouples the clock signal from the primary winding so that no alternating current voltage is developed across the secondary winding. The signal across the secondary winding is demodulated in a demodulator that produces a control signal that is conductively isolated from the input signal. The control signal is coupled to a regulator of the power supply. A power-on state of the control signal occurs when the alternating current voltage is developed at the secondary winding terminal. A power-off state of the control signal occurs when the alternating current voltage is absent.