Electronics Projects Archive

Can hear sounds through glass panels or walls. Battery operated Sensitive amplifier, low noise amplifier with up to 5000x amplification, so even the smallest noise sources can be heard loudly..

The purpose of the Battery Protection circuit is to protect the 6V battery from over-discharging. The battery voltage is continuously monitored and when it reaches a dangerously low voltage value,..

“Increase Your Car’s Performance Battery Voltage Stabilizer Grounding” I mentioned the additional chassis method for passenger cars in my post. I applied it on my car. Preparing the cable was..

Hair dryers use DC motors between 12V…24V. ​​They rarely fail, usually the 220V cable or heating resistor fails. I have not seen a motor fail yet, in fact I have..

Soft start, soft start device for motorized hand tools, motors and transformers. It can solve problems such as fuse blowing, irregular operation etc. due to instantaneous high current draw during..

A simple but functional timer device that allows you to control any device powered by 230 VAC mains in a cyclical, intermittent manner. A typical astable circuit with the NE555..

NiMH, NiCd Battery charger is a simple circuit with a single transistor and LED indicator, built with very little material. The number of series-connected batteries can be increased according to..

The 12V Battery Desulfurizer, a more powerful 100 ampere version of the previously shared “Lead Acid Battery Sulfate Dissolver 80A Desulfurizer” device, applies 100A pulses up to 100 µs every..

Spectrum analyzer 8 channels (200Hz, 400Hz, 1kHz, 2kHz, 4kHz, 6kHz, 8kHz, 12kHz) 10 bargraph LED display is used. Audio Spectrum analyzer device is based on Atmel ATmega48 Microcontroller. It is..

Arduino Controlled Adjustable Power Supply, Voltage Regulator. Input voltage is between 28V…35V. Output voltage is between 0 and 25V, output current is up to 3A. Output is protected against short..