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:
Oct. 08, 1985
Filed:
Mar. 23, 1984
Gerhard Schwarz, Altena, DE;
Braun Aktiengesellschaft, Kronberg, DE;
Abstract
A constant voltage or constant current output circuit is disclosed which can be operated with input voltages which fluctuate sharply at nearly any frequency. A pulse width modulated (PWM) switching transistor is used with a choke inverter. The PWM switching transistor is input and output level responsive. A second transistor is connected to the switching transistor and is used to block operation of the switching transistor. The electronic device according to the invention supplies a constant output voltage even at input voltages between 70 and 264 volts and stimulates oscillation absolutely reliably even under maximum load. In addition, the device is suitable for DC and AC voltages of any frequency and merely requires a simply designed voltage regulating circuit that uses only ordinary components.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile