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Author: Mangapathi
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LED Chaser Circuit: Creating Moving Light Effects
This project outlines how to build a classic LED Chaser Circuit, often called a moving light effect or sequencer. This…
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Non-Contact AC Voltage Detector using the BC547 Transistor
This project describes how to build a simple, non-contact AC Voltage Detector. This device can sense the presence of AC…
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Touch Switch using the BC547 Transistor
This project explains how to build a highly sensitive Touch Switch circuit that uses the low electrical current conducted by…
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Music-Reactive Lights
This project describes how to build a simple Music-Reactive Light. A music-reactive light is a fun circuit where LEDs light…
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Light Sensor (Darkness Detector)
This project helps to automatically turn ON a light or LED when it gets dark and turn it OFF when…
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Mini Tesla Coil: Wireless Power Transfer
This project explains the function and construction of a Mini Tesla Coil, a resonant transformer circuit invented by Nikola Tesla…
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Convert 220V AC to 12V DC Without a Transformer
Normally, transformers are used to step down voltage from high AC voltage to a lower level before converting it to…
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Simple Fire Alarm with Heat Sensor (Thermistor) and Transistor
This simple fire alarm circuit uses a heat sensor to detect high temperatures and alert you with an LED and…
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Automatic Motion Sensor Light with PIR Sensor and Transistor
Motion sensor lights are very useful at home—they automatically turn ON when they detect movement, giving you hands-free lighting and…
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AC to DC Converter: Converting 220V AC to 12V DC
An AC to DC converter changes alternating current (AC) from the power outlet into direct current (DC) that can be…