IC CD 4093 Based PWM DC Motor Controller Circuit control motor speed and save power, it change PWM duty cycle to adjust motor speed by changing voltage. Also, this circuit uses CD 4093 NAND Schmitt trigger and MOSFET for smooth running and it uses 12V power supply and 5A current. Circuit Working: Parts List: Components […]
DIY Projects
Motor Speed Regulator Circuit for PCB Drills
This tutorial is about Motor Speed Regulator Circuit for PCB Drills, it control speed for clean and accurate holes. Also, main part of the circuit is LM3578 IC with feedback and 1V reference and it also has oscillator. LM3578 and IRF540 MOSFET adjust motor speed and then they give smooth, adjustable speed for small PCB […]
Simple TDA7274 Based Low Voltage Motor Speed Controller Circuit
Simple TDA7274 Based Low Voltage Motor Speed Controller Circuit is useful and easy to make, as the circuit is efficient and precise with speed adjust. Also, TDA7274 IC is motor driver for low voltage and for low power DC motors and it works from 1.8V to 6V and has built-in voltage reference. Furthermore, output is […]
Temperature Controlled Fan Circuit for Audio Amplifiers
Amplifiers make heat when working, also too much of heat make it work bad and can die soon; therefore, this Temperature Controlled Fan Circuit for Audio Amplifiers keep amplifier cool. Fan starts only when amplifier is hot and if volume is low and less heat then fan stays OFF and saves power. Also, the circuit […]
Motor Driver Circuit using IC TC4424
The Motor Driver Circuit using IC TC4424 chip works well for DC motor control because it drives two MOSFETs, operates fast, and needs only a few extra parts. In addition , circuit is easy to build and can control motor spin direction, also it power 10 to 18V DC which depends on motor; further more […]
Simple Mains Powered LED Light Circuit
Simple Mains Powered LED Light Circuit runs on 230V AC mains; also it uses capacitor dropper to limit the current. Moreover, LEDs in series-parallel are cheap and easy for mains lighting and they are with bright white light and no big transformer; furthermore, it is good for low power light needs. Circuit Working: Parts List: […]