This Continuity Tester Circuit uses two transistor like small switch for checking wire is good or bad and for that we just need a battery and one LED light. Here, one side touches to battery other side touches the wire and if wire is okay, then current connects through and light will ON, that mean […]
Hobby Circuits
Sound Activated Relay Circuit
This article show how to make one Sound Activated Relay Circuit, which uses sound for turning device ON and OFF. Also, relays are special parts and they control big power things like lights and motors. Here are some ways to use it: Furthermore, this article tell us how to build and use this type of […]
LED Chaser Circuit using IC 4017
This LED Chaser Circuit using IC 4017 project make LED lights turn ON one by one like chasing, also it is fun way to learn electronics. In addition, one chip of IC 555 makes pulse again and again and that pulse connects to other chip IC 4017 and it turn ON and OFF each pin […]
Chirping Bird Sound Generator Circuit
To begin with, Chirping Bird Sound Generator Circuit is simple electronic project which make sound like real bird chirping. Moreover, it use basic parts like transistors, capacitors, resistors audio transformer to make natural bird type sound. In addition, we can use this circuit in toys, doorbells and decoration items to make them more interesting and […]