A voltage multiplier is applied as a high source impedance, 36V, 300mA, 12W LED driver. The high source impedance is ideal for driving power LEDs because it accommodates variations in LED junction ...

According to the SEAD (Super-efficient Equipment and Appliance Deployment) initiative, televisions are responsible for approximately 3 to 8% of global residential electricity consumption. An analysis ...

Most small-size color LCD displays today use white LEDs for backlighting. These systems usually involve handheld devices with an LED drive circuit powered by a battery whose output voltage varies over ...

Fig 1. This voltage regulator circuit (a) uses green LEDs as both the stabilization elements and as the voltage indicators at the front-panel switch (b). Fig 2. The addition of resistor R4 to the ...

Oh God, here we go....<BR><BR>LED's are current devices, not voltage devices. If the LED you have has a 3V voltage drop, then subtract the 3V from your source and use that voltage to calculate the ...

[mircemk] built a slick-looking LED tester with a couple handy functions built in. Not only can one select a target current to put through an LED, but by providing a target voltage, the system will ...

Power Integrations has published a reference design (DER-297) describing a high efficiency, ultra compact driver for a B10 style led light bulb. Based on the company's LinkSwitch-PL non isolated, ...