億光推出Mr. EVERLIGHT LED照明省電計算器APP應用- LEDinside 2012年9月7日 - 市面上關於LED燈泡節能的報導多不勝數,如果居家更換成LED燈泡,真的可以省下電費嗎?億光電子特別製作Mr. EVERLIGHT照明省電計算 ...
LED (Single) Circuit Power And Series Resistor Calculator This calculator requires the use of Javascript enabled and capable browsers. A question that often comes up in projects using LEDs is "what resistor should I use ...