| 摘要 |
<p>PURPOSE: An LED driving circuit is provided to maintain the light from an LED element arranged in a string by supplying a driving current to the string through a constant current regulator. CONSTITUTION: A constant current regulator(CCR) receives AC voltage from an input power source and supplies a rectified voltage to a string(200). The constant current regulator includes an active element. The string includes at least one LED element. A bridge circuit(100) includes four diodes and rectifies AC voltage and supplies it as a driving voltage.</p> |
