Audio Mixer With Multiple Controls

When recording sound from several orchestral instruments being played by different musicians using a single microphone, the only way to adjust the sound balance is to change the position of the...
resistor color Table

Beginners Guide to Resistor Colour Codes

This table will help you with managing resistor color code so that you don't burn up your circuit due to a wrong resistor. Right below this image is a little tutorial to...
PIN Diode Based Fire Sensor

PIN Diode Based Fire Sensor

Here is a PIN diode based fire sensor that activates an alarm when it detects fire. Thermistor based fire alarms have a drawback; the alarm turns on only if the fire...

Automatic Anchor Light

Federal and international regulations require boats to carry lights between sunset and sunrise and during conditions of restricted visibility. The number and colours of the lights vary with the size of...

Make Your Own Dual-Voltage Rechargeable Torch Light

The purpose of this circuit is to create a new topology with good power factor maintained at AC voltage input, to provide good efficiency output to the battery and to increase...
automatic night lamp with morning alarm

Automatic Night Lamp With Morning Alarm

This automatic night lamp circuit turns on a night lamp when bedroom light is switched off. The lamp remains ‘on’ until the light sensor senses daylight in the morning. A super-bright...
earth fault indicator

Earth Fault Indicator

In mains powered equipment, exposed metal parts are connected to earth wire in order to prevent users from contact with high voltages if electrical insulation fails. Connections to ground through earth...
simple low power inverter circuit

Simple Low Power Inverter

Here is a simple low power inverter that converts 12V DC into 230-250V AC (DC to AC Converter). It can be used to power very light loads like window chargers and...

IR Based Automatic Hand Sanitiser Dispenser

This project is based on an infrared (IR) sensor, which detects the presence of hands and consequently activates the motor pump to dispense alcohol-based sanitiser. The circuit is economical, reliable, and...
Circuit of the stress meter

Stress Meter | Circuit Diagram With Full Explanation

This stress monitor lets you assess your emotional pain. If the stress is very high, it gives visual indication through a light-emitting diode (LED) display along with a warning beep. The gadget is small enough to be worn around the wrist.

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