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    • 10. 发明公开
    • 정전류 회로 및 이를 이용한 조명 시스템
    • 使用相同的恒定电流电路和照明系统
    • KR1020130132113A
    • 2013-12-04
    • KR1020120056240
    • 2012-05-25
    • (주) 탑엘이디전주대학교 산학협력단
    • 정호연이완범소병구
    • G05F1/565G05F1/573
    • G05F3/08H03M1/66H05B37/02
    • The present invention relates to a constant current circuit and an illumination system using the same. The constant current circuit supplies constant currents to light emitting diodes using a voltage regulator and comprises: light emitting diodes; a voltage regulator which supplies constant currents to the light emitting diodes by generating driving voltage according to voltage input into a feedback terminal; a current limiting resistance for limiting currents flowing into the light emitting diodes; a feedback resistance for inputting the voltage of the current limiting resistance into the feedback terminal; and a compensation voltage output unit which generates compensation voltage corresponding to an error value of the current limiting resistance, and inputs the generated compensation voltage into the feedback terminal, wherein the constant currents flow into the light emitting diodes regardless of the error value of the current limiting resistance. [Reference numerals] (110) Voltage regulator;(210) Compensation voltage storage;(220) Digital/analog converter
    • 本发明涉及一种恒流电路及使用其的照明系统。 恒流电路使用电压调节器向发光二极管提供恒定电流,并且包括:发光二极管; 电压调节器,其通过根据输入到反馈端子的电压产生驱动电压来向发光二极管提供恒定电流; 用于限制流入发光二极管的电流的限流电阻; 用于将限流电阻的电压输入到反馈端的反馈电阻; 以及补偿电压输出单元,其产生与限流电阻的误差值相对应的补偿电压,并将所生成的补偿电压输入到反馈端,其中恒定电流流入发光二极管,而与电流的误差值无关 限制电阻。 (110)电压调节器;(210)补偿电压存储;(220)数字/模拟转换器