PWM (Pulse Width Modulation)
makerPWM (Pulse Width Modulation) is a technique for modulating the width of the pulses in a pulse signal to control power delivery to electrical devices.
expanded
Pulse Width Modulation is widely used in power control and signal processing as a method to adjust the power output of DC motors, LEDs, and other devices. By varying the width of the pulses in relation to a fixed period, PWM effectively changes the average voltage or current going to an electronic device, allowing for precise power management and energy efficiency.
examples
PWM is used to control the speed of DC motors by adjusting the duty cycle of the voltage applied. For example, a motor speed controller may generate a PWM signal with a frequency of 25 kHz and vary the duty cycle between 0% and 100% to control motor speed proportionally.
Commonly used in robotics and industrial automation to manage the speed of conveyor belts or robotic actuators.
PWM is utilized in LED dimming applications, where the brightness is controlled by varying the duty cycle of the PWM signal applied to the LEDs. A typical setup might involve a PWM frequency between 120 Hz to 300 Hz with duty cycles adjusted to achieve the desired brightness levels.
Regularly employed in modern LED lighting systems for both residential and commercial settings to reduce energy consumption and extend the lifespan of LEDs.