139K views · 7.4K reactions | Electric motor speed controller. In this video we learn how to design a simple PWM speed controller for a DC motor learning how current flows in the circuit and what each component does. You can even build the circuit yourself! #engineer #engineering #electrical #electronics #engineeringmindset | The Engineering Mindset | Facebook

PWM generation using a 555 timer IC: A triangular waveform (green) is compared with a control voltage (blue pulses) to generate a Pulse Width Modulated (PWM) signal. As the control voltage varies, the pulse width changes accordingly. The 555 timer operates in comparator mode, with components R1, R2, and C1 shaping the triangular waveform. This setup is commonly used in motor speed control, LED dimming, and signal modulation applications. #ne555 #pwm #circuitdesign #electronics #CircuitSimulation