What is PWM? Interesting physics

What is PWM? Friends! Most electronic devices are controlled by a sequence of rectangular pulses of different frequencies and duty cycles. In this video I have prepared for You a demonstration of changing the frequency and duty cycle of the signal using a square pulse generator on the NE555. Rotating the knob on the right changes the duty cycle of the signal, and rotating the knob on the left changes the frequency of the signal. If you are interested, then write comments. Sincerely Yury Kovalenok. Что такое