Light is present all around us and photosensitive devices can feel this light, as these are very useful electronic components which change their action when light falls on them. We use these devices in automatic lights, alarms and many other electronic circuits. In this article, for Understanding Photosensitive Devices Circuits we will learn about their […]
Sensors and Detectors
Simple Short Circuit Detection and Alert System
Simple Short Circuit Detection and Alert System is very important in power system, as it stop damage when short circuit happen. Short happen when positive and negative wire get touch and this make big current flow and can break parts or burn wire. Furthermore, circuit uses 2 transistor, buzzer and LED to find and show […]
Building an Auto Street Light Circuit using IC 741 and Transistor
This post talks about Building an Auto Street Light Circuit using IC 741 and Transistor, as it turns ON at night and OFF at day. Furthermore, this circuit is simple and saves energy and it uses relay to control light, LDR to sense light, BC547 transistor drives relay and IC 741 works as a comparator. […]
Simple Flame Sensor Circuit using Arduino
Flame sensor is very important for many uses like industry machines, safety check and fire alarm. So in this post for Simple Flame Sensor Circuit using Arduino shows how to connect flame sensor to Arduino to find fire; also this project is cheap and works well for real-life fire detection. Arduino Code: Code for Flame […]
Building an LDR Comparator Circuit using IC LM339
Building an LDR Comparator Circuit using IC LM339 is useful and important in many electronic jobs like sensing and control, also using LDR, resistors, LED and LM339 IC we can make a simple circuit to check light level and show light change. LDR works like light sensor and its resistance changes when light changes and […]
Simple Arduino Based Electromagnetic Field Detector Circuit
EMFs (electromagnetic fields) are invisible energy from electricity and lights which are natural and man made. Some EMFs are safe and some are bad if used too much for long time, so we can use simple Arduino tool to find EMFs around us. Moving electric charge make EMFs and this EMFs have two parts: electric […]