Suppose we want to drive an LED string with 400 mA. Drivers U1 and U2 (MAX16803) are good for automotive use because they have a high input-voltage range, excellent thermal qualities, and the ...

Learn how to make a powerful 220V LED light and connect it with a 3V setup. This easy guide will walk you through the process of creating bright and efficient lighting at home.

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.

Toshiba has introduced a high speed photocoupler for servo motors and programmable logic controllers. The device is operable in both plus and minus LED input currents. Toshiba says it enables ...

The circuit uses Q 1, a 2N7002 FET,and zener diode D 1 to solve the problem.The FET is in series with LED 1 and current-limiting resistor R 1.DiodeD 1 is a VishayAZ23C4V3-V, which has a typical ...

Circuit topologies for connecting LEDs. Erik Ogren looks at the choice between serial and parallel architectures for connecting LEDs. When designing a handheld device with a colour display using white ...