2) LED as a Continuity tester: The above shown circuit is LED as continuity tester. This circuit is used for checking continuity of cables, connectors and switches. When A and B terminals are shorted, ...

I needed a simple LED indicator showing that a particular voltage level had been reached—specifically, that a capacitor had charged to a particular potential. I was convinced that there must be ...

3. The demonstration circuit uses the switch to activate a simple LED; standard 1N4148 diodes are used as clamps to prevent high-voltage spikes from damaging the flip-flop IC.

October 9, 2013 [Henryk] just sent us his latest episode of simple LED circuit puzzles. In front of the camera he solders one pin of each of the 3 LEDs to a different switch.

If you want to easily control the power in a circuit, you’ll probably reach for the classic toggle switch. While there’s certainly nothing wrong with that, physical toggles are a bit da… ...

If you switch to either of these, you can make a worthwhile saving, but switching to all LED bulbs, you could save as much as £400 on your energy bill this year.

Nintendo broke months of silence on Wednesday morning with an hour-long pre-recorded livestream devoted to the upcoming Switch 2.

Supertex has introduced an LED lighting chip with switch dimming. The IC, dubbed HV9801A, dims LED lamp brightness to one of four preset levels through rapid toggling of a light switch. Light levels ...

The circuit is too simple so that it can be enclosed in a small box. A 12 volt miniature battery is used to power the circuit. Two transistors T1 and T2 are used as electronic switches to turn on / ...

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 over 30V ...

Pendant lights are a great way to decorate a space and can be incredibly versatile. You can turn an LED bulb into a stunning ...