duty cycle

I've been playing around with a couple of NE555 PWM circuits in an effort to create a LED dimming solution (indicator and backlight) to include in an audio output switching circuit (like an A/B box). The goal is the widest possible duty-cycle range -- from nearly 0% off to nearly 100% on -- at...

Hello I have a pulse wave coming from the photo diode, with T(ON) = 50-60us, and total time period is approx 20ms. Since this is too short a period (T1) to be detectable I want to increase it to 5ms, keeping the total time period same, that means I want to multiply the duty cycle by 20 to 30...

Need some insight about a plot found in the Fundamentals of power electronics second edition book. I don't really understand why it is written like this. Left side \( \frac{I}{V_{g}/R} \) can be rewritten to \( \frac{1}{D'^{2}} \) so it is basically "just" duty cycle. The book states that the...