This 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 light […]
Battery Charger Circuit using a Solar Panel and 220V Supply
This smart Battery Charger Circuit using a Solar Panel and 220V Supply charges the battery using sun and normal electricity. During daytime solar panel take sunlight and charge the battery. No worry if sky is cloudy or if it is night time it also uses normal 220V electricity to charge. Also it has hot backup […]
Automatic Night Lamp Circuit using IC 555
This Automatic Night Lamp Circuit using IC 555 works like smart switch for night light. It have one special light sensor called LDR to check how much light is outside. When night come and outside become dark the circuit turns ON the lamp by itself. Then when morning comes and light comes back it turn […]
Simple Servo Motor Controller Circuit
Think about a motor which is very special. It can turn to be very exact, this small circuit is like a brain. It tells motor how much to turn using small electric pulses. Long pulse motor move more then the short pulse motor move less. We can say it what to do like move robot […]
Simple Display Driver Circuit
Do we think about screen on calculator or phone if yes ? then a small translator is needed. Simple Display Driver Circuit is like that translator. Tiny computer, microcontroller gives it information Then driver change it to special code for display. This code tell display which light or pixel should turn ON and to show […]
Simple FET Preamplifier Circuit
This Simple FET Preamplifier Circuit works like super booster for small sound. It uses special transistor, FET to make quiet sound go more loud. This circuit is very good because it uses two kind of transistors N channel FET and PNP bipolar, together they make sound strong and not bad. So even very tiny sound […]