This guide will show you how to build a cool circuit that uses two LEDs to show temperature. It can be used for all sorts of things, like: Checking the water temperature in your shower to avoid getting scalded Making sure your electronics are not getting too hot, like amplifiers, heaters, computer parts or even […]
LED and Lamps
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Simple LED Strobe Light Circuit
This guide shows you how to build a flashing LED light strobe light using a common chip called the IC 555 . Some knobs and resistors control how fast the light flashes and how bright it is. Another resistor controls how much power goes to the LEDs. This project uses a special switch that can […]
Illuminate LEDs with 1.5V Battery using this Joule Thief Circuit
This is a circuit that can make an LED light up from a dead battery! It works with white, blue and even ultraviolet LEDs, and all you need is a battery that’s almost empty at least 1.2V. The cool thing is, the LED can even light up with just a tiny bit of power left […]
5 Watt LED Driver Circuit (SMPS)
This post shows you how to build a power supply to directly power bright LEDs from your wall outlet. It is made especially for white LEDs, but it can also work with other colors like blue, green, red, yellow and even ultraviolet UV. What is a 5 Watt LED Driver Circuit: A 5 Watt LED […]
SMPS Halogen Lamp Circuit
SMPS Halogen lamps usually need transformers to work. This guide is about a new kind of transformer that uses a switching power supply. It is simpler than older transformers and works with other light bulbs too, as long as they do not use radio waves RF. This new design also saves energy. What is a […]
Simple LED Fading Circuit using IC 555
LEDs are super cool and efficient light sources that are everywhere these days. This guide will show you how to make an LED light that slowly fades in and out. It might sound fancy, but you only need a few parts and a classic chip called a 555 IC. What is a LED Fading Circuit […]