Archive for date: April 1, 2011

How is PWM modulation like AM modulation?

April 1, 2011 | Amateur Radio, electronics, Math | By: Mark VandeWettering

In thinking about the 555 timer AM transmitter that I constructed last night and trying to understand how it might work, I eventually ended up with a basic question about PWM modulation. It boiled down to this: if you are generating a pulse width modulation signal with a rate of (say 540khz) but pulses whose […]