Automatic Night Lamp Circuit using Battery Power works on battery and saves energy, it turns ON in dark and OFF in light. Furthermore, this circuit is good for bedroom, hallway, stairs and gives light at night and it also uses two 1.5V batteries and has 7555 timer chip, LDR as light sensor and LED as […]
LDR Circuits
Super Sensitive Intruder Alarm Circuit
This article for Super Sensitive Intruder Alarm Circuit talks about very simple but strong intruder alarm circuit, also it is very sensitive. Furthermore, this circuit is useful for security and it can detect very small Interference. This circuit uses IC 741 op-amp and IC 555 timer to work and it also use LDR (light sensor) […]
Understanding Photosensitive Devices Circuits
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 […]
Smart Headlight Automation Circuit using IC 555
Smart Headlight Automation Circuit using IC 555 turns ON the car light by itself when dark, it uses LDR to check light outside and 555 IC decide when light turns ON. Also, this circuit saves power, make car light work at right time and help driver be safe at night. Circuit Working: Parts List: Components […]
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. […]
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 […]