A power-limit circuit can be added to the circuit in Fig. 1 to limit the overall power when there is a large voltage variation for parallel strings of LEDs, with the result shown in Fig. 2.

A small round LED floodlight. Before installing them on the tractor, he tested them on the workbench. Frank was impressed with how much light both fixtures provided, exceeding the brightness of his ...

Here is the simple solution to make an automatic solar powered led lamp. It automatically switches on two high power White LEDs in the evening and stays on for 6 hours using a 6 volt 4.5 Ah ...

Then, the metal ends of the lights are cut and shaped. Like the string, the LED light bulbs are also dipped in flux. The bulbs are then finally soldered with the wire.

If you use a standard bulb it behaves as the "medium" circuit, so you get the off-off-on-on behavior. You can get 3-way LED bulbs that have two independent circuits, but they cost more.

Three new task lights made by the company Humanscale debuted at the NeoCon trade show this week in Chicago, each of them highly-efficient, LED-powered machines made from supersustainable recycled ...