I like to drive 5 LED (white) directly from 240V AC , the application is to replace normal lighting bulb..
The LEDs are connect in series, the Vf for each LED is 3.2V, current can be 100mA, so total voltage require is about 16Vdc 100mA.
Beside using transformer to step down the voltage, what is other possible way to drive the LEDs (100mA) directly from AC240V?
Is there any dedicated IC for this application? :roll:
The LEDs are connect in series, the Vf for each LED is 3.2V, current can be 100mA, so total voltage require is about 16Vdc 100mA.
Beside using transformer to step down the voltage, what is other possible way to drive the LEDs (100mA) directly from AC240V?
Is there any dedicated IC for this application? :roll: