In this post we will see how to make Simple Contactless 220V Phase Detector Circuit using IC 4017 This small tool help to check wire or cable if current is inside or not without touching it. Very useful for electrician to find problem in big electric system. If current is there in wire the light […]
Sensors and Detectors
Simple Storm Detector Circuit
Simple Storm Detector Circuit is like small weather magic in box. It can feel lightnings electric noise which shows storm is coming near. This circuit uses one antenna to catch small signal in air like small radio. But signal being weak it uses amplifier to make signal strong. Sometimes it also uses special filter to […]
Simple Radiation Sensor Circuit
Simple Radiation Sensor Circuit is like small spy for rays which one cannot see. It can smell different radiation like from light bulb, electromagnetic, or X-ray (ionizing one) etc. This circuit have special sensor when radiation detects sensor feels it and send signal. The circuit then uses that signal to modify things such as showing […]
Simple Static Electricity Detector Circuit
Simple Static Electricity Detector Circuit is like alarm for electricity when gathers on things like clothes. This happen when we rub things together. This kind of electricity can break small electronics so detector is useful near them. Detector have special sensor which feels electric change in air. Maybe its wire stick out or maybe flat […]
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 […]
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 […]