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. 13, 2017
Filed:
Oct. 27, 2016
Crestron Electronics, Inc., Rockleigh, NJ (US);
Russikesh Kumar, Ridgewood, NJ (US);
Crestron Electronics, Inc., Rockleigh, NJ (US);
Abstract
A lighting dimmer circuit that provides sinking and sourcing current outputs. The sinking and sourcing dimmer circuit may comprise first and second amplifiers, first and second NPN transistors, and first and second independent feedback loops. The dimmer is configured for providing a variable output voltage signal (Vout) to a sinking load or a sourcing load. When the output voltage signal (Vout) is coupled to a sinking load, current flows from a positive power supply (Vpos), through the first NPN transistor, and to the sinking load. When the output voltage signal (Vout) is coupled to a sourcing load, current flows from the sourcing load, through the second NPN transistor, and to the ground. In addition to the independent feedback loops, the gain of second amplifier may be greater than the gain of the first amplifier to ensure there is no undesired contention between the first and the second NPN transistor.