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. 18, 1989
Filed:
Nov. 03, 1988
Mark C Fisher, Pasadena, TX (US);
Tideland Signal Corporation, Houston, TX (US);
Abstract
An improved regulator circuit for a pulse width modulated power supply having an input switch and a plurality of different output voltages. A precision reference voltage is connected to one or more op-amplifiers and/or divider networks, each of which is connected to an output voltage for translating the outputs to ground when the voltages are properly regulated. A differential amplifier is connected to each of the operational amplifiers and divider networks. When the absolute value of any voltages goes low, the corresponding input to the differential amplifier rises and diverts drive current from an optoisolator for increasing the duty cycle of the input switch.