could be used but I found no simple circuits. My first thought was just to connect a series current limiting resistor and LED to the cathode so that the LED would light when the reference ...

If you want to easily control the power in a circuit, you’ll probably reach for the classic toggle switch. While there ... with a slick way to control the LED lighting in his 3D printer ...

The first video is a simple circuit with ... features the same resistor/switches/LEDs, this time in a parallel circuit. Turning on the first switch makes the first LED light up, and the second ...

This Design Idea is a solid state relay (SSR) which uses a triac to switch AC loads at high current. There are plenty of simple SSR circuits available ... A positive current into the optocoupler’s LED ...

Figure 1. A Simple Over-Voltage Protection Circuit for LED Drivers This boost circuit implements current mode control and senses the LED current via resistor R14. The output voltage is boosted to just ...

Older designs relied on simple resistors to limit LED drive current, but designing an LED circuit based on the typical forward ... Figure 1 illustrates a coordinated protection scheme for switch-mode ...

Altech’s load-safe LSF Series and RT Series non-fusible motor disconnect switches and accessories de-energize electrical circuits for safe maintenance, repairs, inspections and emergencies.