A healthy battery is important for the car or any machine with a battery to run well and avoid problems. This post shows how to build a tool that checks the battery voltage and informs if it is low, good or overcharged. It works with most 12V car batteries but with a small change one […]
LED and Lamps
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How to Make a Simple LED Bulb Circuit
LED lights have gained a lot of popularity recently. Another name for them is LED bulbs or solid state lighting. Due to their significant lower power consumption i.e between 0.5 and 3 watts compared to other bulbs these lights are excellent for reducing electricity costs. These bulbs were not as bright as some ten year […]
How to Build a Two LED Temperature Indicator Circuit
The article explains how to build a cool circuit that indicates temperature using two LEDs. It is used in various kind purposes such as: Checking the water showers temperature to prevent damage Ensuring that the computer parts, amplifiers, heaters and even the water tank used in the car do not overheat. What is a Two […]
Simple LED Strobe Light Circuit
This article teaches how to make a flashing LED strobe light using a popular chip known as the IC 555. A few knobs and resistors are used to control the lights brightness and flashing flow. Another resistor regulates the power supply that gets to the LEDs. This project makes use of a special switch that […]
Illuminate LEDs with 1.5V Battery using 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 is almost empty at least 1.2V. The cool thing is the LED can even light up with just a tiny bit of power […]
5 Watt LED Driver Circuit (SMPS)
This article explains how to construct a power supply that uses a wall plug to directly power brilliant LEDs. Though it is specifically designed for white LEDs it can also function with blue, green, red, yellow and even ultraviolet (UV) lights. What is a 5 Watt LED Driver Circuit: A 5 watt light emitting diode […]