Simple TV Remote Tester Circuit is small tool like A doctor for ones remote. It uses one infrared sensor like eye for light which we cannot see and to check if remote give signal when one presses the button. If signal arrives small light turns ON or buzzer make beep sound which means remote is […]
Simple Heat Sensor Circuit using a Single Transistor
This Simple Heat Sensor Circuit using a Single Transistor and one special resistor like thermometer. When it get hot this resistor changes to how it work because of which the transistor sees this change. Transistor work like door and if temperature changes it opens or closes for electric. So the circuit can detect when something […]
Squelch Circuit
Squelch circuits are like the radio peace assistant! This small smart circuit stops radio sound when no strong signal connects. So no more hearing of bad noises but only when signal is strong one can hear good sound or video. Best thing about squelch is its very easy and works with many radio types. It […]
Touch Controlled Potentiometer Circuit
This Touch Controlled Potentiometer Circuit one just need to tap it and it will start to work. No need to turn knob or move the slider it just touches the sensor and it changes the resistance or voltage. It uses capacitive sensing which means that when one contacts it, the body will act as a […]
Multi-Tone Electronic Siren Circuit
In this article for Multi-Tone Electronic Siren Circuit make it more fun with one siren circuit that makes many sounds. This small thing work like alarm sound toy which is good as warning. Not just one boring sound it makes many loud noise one after one or same time! It works well to get people […]
AC Drill Speed Controller Circuit
Now one can control its own drill. AC Drill Speed Controller Circuit is like cruise control but for drill. It helps one to change motor speed so one can work better for any job. Very good when one is doing soft work like wood or metal but need careful hand. There is no need for […]