This long range FM transmitter circuit (2km) works like small radio station in one box. We can put music or talk in microphone it sends sound far away in air more far than normal bluetooth speaker. It is good for many thing like small community radio, wireless speaker in big garden or playing music for […]
Simple Public Address Amplifier Circuit
This Simple Public Address Amplifier Circuit it works like a very strong loudspeaker for our voice! When we speak on microphone then it makes our voice go very loud because of that many people can hear us good. Good for big place like school, office, stadium or parties where we want all people to hear […]
Simple 30V 1Amp Transformerless Power Supply Circuit
This Simple 30V 1Amp Transformerless Power Supply Circuit works like small adapter for our electronic. It takes normal high voltage electric and change it to low safe voltage to what our devices need. No big transformer is required it uses special parts like capacitor and diode to do the work. Like if we have 30V […]
Simple Flip Flop Circuit
Think about small switches they only do “ON” or “OFF”. Flip flop circuit is same like that but for electronics. It stay in two state like 0 or 1. This small switch very important it can remember stuff, keep data and help control what happen next like timing and by coordinating things. We can see […]
Simple Entrance Alarm Circuit
This easy and Simple Entrance Alarm Circuit is made to protect door or way where people enter. It makes loud sound when someone walk through invisible IR light. It works good at day and night by not giving much wrong alarm. The circuit is simple and good for hobby people during nighttime. Circuit Working: Parts […]
Simple Smoke Alarm Circuit
This Simple Smoke Alarm Circuit is like house that has got a big nose. This circuit smells smoke in air and if smoke come it make loud alarm sound. Alarm can be buzzer, blinking light or it can be other alarm to start also. Smoke detector can work in different way one can use small […]