This post talks about 220V Temperature Controller Circuit in easy way, the circuit can turn ON or OFF heater, cooler or other things to keep same temperature. Also, it uses big power like 220V and has sensor like thermometer to check heat or cold and also has small brain chip or timer to decide when […]
Heater and Temperature Controllers
Simple Freezer Alarm with Buzzer Circuit
Simple Freezer Alarm with Buzzer Circuit is like small guard for our ice food, it uses one sensor, thermistor to check cold level. Furthermore, if freezer become warm too much then buzzer makes loud sound to tell us something is not right, like food is going to melt. Hence, with this indication we can do […]
Simple High Temperature Alarm Circuit using IC 555
Simple High Temperature Alarm Circuit using IC 555 uses one special chip called IC 555 which works like a temperature guard; also it keep checking temperature always. Hence, if its too much hot it make alarm sound like buzzer and tell us something is getting too hot, so we can know early and fix before […]
Heat Sensor Circuit using Piezo Transducer
This Heat Sensor Circuit using Piezo Transducer is like small detective for heat, which uses special thing called piezo transducer and work like tiny electricity maker. When it get hot or cold it presses itself little bit and make small electric shock and the circuit look at this shock to know how much hot or […]
Simple Temperature Meter Circuit
Simple Temperature Meter Circuit is like small detective for heat, as it use special sensor like thermocouple or thermistor to feel heat near it. Here, the sensor can be small part or smart chip like LM35 or LM34 which change heat into electric signal; then circuit take this signal and confirms how much hot or […]
Simple Temperature Controlled DC Fan Circuit
Simple Temperature Controlled DC Fan Circuit is like smart fan, which uses special sensor to feel heat around; so when place, it get too hot then circuit makes fan run fast like turning AC high. Therefore, if the place cools again then fan slow down or stop to save power, hence, this circuit uses parts […]





