Hello,
I wondered about what would happen if I feed a 20KHz square wave, that goes from 0V to 5V, through a bandpass filter. Does it filter out the DC part and the only part that's left is a square wave oscillating from -2.5V to 2.5V ? And if that's the case, where does the "negative" voltage come from ?
I wondered about what would happen if I feed a 20KHz square wave, that goes from 0V to 5V, through a bandpass filter. Does it filter out the DC part and the only part that's left is a square wave oscillating from -2.5V to 2.5V ? And if that's the case, where does the "negative" voltage come from ?