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:
Mar. 12, 1985
Filed:
Jun. 01, 1982
William H McMahan, Salt Lake City, UT (US);
Steve H Holtman, Salt Lake City, UT (US);
American Laser Corporation, Salt Lake City, UT (US);
Abstract
A high speed switching power supply for a laser system is disclosed. In the preferred embodiment, proportional-plus-derivative feedback of the emitted light controls the duty cycle of the MOS-FET switching transistor to vary the d.c. voltage level applied across a storage capacitor from a d.c. power supply. The storage capacitor is connected across a laser tube to apply its stored voltage thereto. The MOS-FET transistor permits high speed switching. The derivative portion of the feedback damps out oscillatory tendencies in the feedback loop to permit increased loop bandwidth. The combination of the MOS-FET transistor and proportional-plus-derivative feedback permits the laser output to be controlled in a voltage-controlled mode.