This versatile amplifier circuit is designed and submitted by Mr Seetharaman Subramanian from Chennai . The full credit of this article goes to him and we are very proud to publish... Read more
General Description This is a very interesting project with many practical applications in security and alarm systems for homes, shops and cars. It consists of a set of ultrasonic receiver a... Read more
A good, reliable and easy to use dc power supply is probably the most important thing for every electronics hobbyists. Since a proper electronically stabilized power supply is crucial for al... Read more
I recently decided to do some research on electric smoke generators and was surprised to learn that ready-made items are easily available at affordable prices. They are widely used in film a... Read more
An isolated analog input module presented here is particularly suitable for industrial electronics applications. Sending analog signals from field sensors over long-distance cables is o... Read more
Air-coolers provide cool air in a room by adding moisture to the air. This moist air is blown inside the room by an exhaust fan or blower, which makes the room temperature drop. These cooler... Read more
This article presents a simple, low-cost DC to DC converter that converts 3.6V-3.7V battery input into three outputs of 6V, 5.3V and 5V. These voltage outputs can be used simultaneously or s... Read more
Circuits like Geiger counters, insect zappers, Nixie tubes and sensors require high-voltage direct-current (HVDC) supplies. There are various types of HVDC supplies available in the market,... Read more
LM338 voltage regulator can also be used as an audio amplifier. The output voltage can be controlled by varying the IC’s reference voltage (pin 1), which is reflected as the output signal in... Read more
This project describes how to make a low-cost DC power meter that can be used for displaying Voltage, current, power and the running time of operation. This is useful and can be used as the... Read more
