This 6V DC Motor Speed Controller Circuit using IC CD 40106 controls 6V DC motor speed. Change speed by change in duty cycle of input voltage. Circuit is cheap, easy, good for toy motor, small fan and blower. Main part of this circuit is IC CD 40106 Schmitt trigger inverter which makes PWM signal. PWM […]
Motor Controllers
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Transistor Based Stepper Motor Drive Circuit
Stepper motors are good for robots, CNC, automation and to move very exact. Transistor Based Stepper Motor Drive Circuit run unipolar motor with logic gates and transistors. It use four 2N2222 to control motor windings, two NOT gates, one XOR gate and to read 2-bit control to turn ON 4 windings. Circuit needs parts like […]
Controlling a DC Motors Direction Circuit with IC 555 Timer
Controlling a DC Motors Direction Circuit with IC 555 Timer is easy to try. Circuit is good for automation, robotics, devices needing forward and backward move. Circuit has 555 timer, transistor, DPDT relay to change direction. Simple design is easy to build and works in both directions. 555 timer make astable output to control relay […]
IC CD 4093 Based PWM DC Motor Controller Circuit
IC CD 4093 Based PWM DC Motor Controller Circuit control motor speed and save power. Change PWM duty cycle to adjust motor speed by changing voltage. Circuit use CD 4093 NAND Schmitt trigger and MOSFET for smooth running. Use 12V power supply and 5A for this circuit. Circuit Working: Parts List: Component Specification Quantity Resistors […]
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. Main part of the circuit is LM3578 IC with feedback and 1V reference. It also has oscillator. LM3578 and IRF540 MOSFET adjust motor speed. They give smooth, adjustable speed for small PCB drills. Supply is from […]
Simple TDA7274 Based Low Voltage Motor Speed Controller Circuit
Simple TDA7274 Based Low Voltage Motor Speed Controller Circuit is useful and easy to make. Circuit is efficient and precise with speed adjust. TDA7274 IC is motor driver for low voltage and for low power DC motors. It works from 1.8V to 6V and has built-in voltage reference. Output is up to 700mA and is […]