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. 25, 2017
Filed:
Jul. 13, 2016
Princeton Technology Corporation, New Taipei, TW;
Shengyou Zhang, New Taipei, TW;
Xin Meng, New Taipei, TW;
Princeton Technology Corporation, New Taipei, TW;
Abstract
A current control circuit for a driving circuitry system of an LED component is provided. In the driving circuitry system, a rectifier provides a rectified voltage to an anode of the LED component, and a current module sets a current flowing through the LED component. In the current control circuit, input and output terminals of a voltage regulator are respectively coupled to the input terminal of the current module and a non-inverting input terminal of an operational amplifier. An inverting input terminal of the operational amplifier is coupled to an output terminal of the current module, and an output terminal thereof is coupled to one terminal of a capacitor. An output-terminal voltage of the first operational amplifier is provided as a reference voltage for the current module. One terminal of a resistor is coupled to the inverting input terminal of the operational amplifier.