Mosquito repellers are popular to keep bugs away, as they use ultrasonic sound or chemical spray; but if it is always ON then they use much electricity. To solve this problem, we designed a timer-based mosquito repeller power saver circuit, it switches the repeller ON and OFF at fixed intervals to reduce power consumption and […]
Automation Circuits
DIY Water Level Monitoring Circuit
DIY Water Level Monitoring Circuit is good for tank or reservoir, it use IC 555 timer in astable mode and make repeated signal, hence, when water reaches a set level then buzzer turns ON. Also, the circuit helps to stop water overflow and is useful in home, factory and farm. Circuit Working: Parts List: Components […]
Simple 12V DC Fan Speed Controller Circuit
Simple 12V DC Fan Speed Controller Circuit is an useful project in electronics, it changes fan speed by adjusting the voltage; also, this post talks about fan speed controller using IC LM2941. LM2941 is low dropout voltage regulator and it handles up to 1A current and it is good for cooling, temperature control and automation […]
30 Minutes Timer Circuit using CMOS IC 4011
30 Minutes Timer Circuit using CMOS IC 4011 is good for long time delay with few minutes to many hours, also this timer turns OFF device after 30 minutes. Furthermore, it is useful for automation, delayed ON/OFF and save energy, also this type of circuit is good to save power; circuit use special chip called […]
Smart Headlight Automation Circuit using IC 555
Smart Headlight Automation Circuit using IC 555 turns ON the car light by itself when dark, it uses LDR to check light outside and 555 IC decide when light turns ON. Also, this circuit saves power, make car light work at right time and help driver be safe at night. Circuit Working: Parts List: Components […]
Building an Auto Street Light Circuit using IC 741 and Transistor
This post talks about Building an Auto Street Light Circuit using IC 741 and Transistor, as it turns ON at night and OFF at day. Furthermore, this circuit is simple and saves energy and it uses relay to control light, LDR to sense light, BC547 transistor drives relay and IC 741 works as a comparator. […]