LM4910 IC is special chip, it makes stereo headphone sound good by using a very low power, also the circuit is useful for small devices like MP3, phone, battery gadgets. Furthermore, it work on low voltage to around 3.3V and has shutdown mode to save power. This article for Simple Stereo Headphone Amplifier Circuit using […]
Hobby 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) […]
Simple Christmas Series Lights Tester Circuit
Christmas come one time in a year and it brings big joy. The Simple Christmas Series Lights Tester Circuit is an easy to build design that helps us find and fix problems in series Christmas lights, also people commonly use these lights for holiday decorations. If one bulb stops then all lights go OFF, as […]
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 […]
Simple Timer Based Clock Ticking Sound Circuit
This article is about Simple Timer Based Clock Ticking Sound Circuit using IC 555, as 555 in astable mode make repeat signal like clock tick.; also, signal goes to small speaker and make ticking sound. Furthermore, circuit is good for beginner, easy to learn 555 timer and sound making. Circuit Working: Parts List: Components Values […]
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. […]