Imagine an amplifier with the output being an AC signal riding on a DC voltage level. All of the text books I have read say you can put a capacitor in series from the output and feed the AC signal from the first amplifier into a second amplifier with no transfer of the DC voltage level. I do not understand how the energy flows across the capacitor in series in such a manner.
In my example, when the DC + AC output voltage from the first stage goes positive, the electrons pull away from that plate closest to the output amplifier. How does that interaction affect the other plate on the input side of the next amplifier?
I always looked at capacitors from a DC perspective where one end is tied to the positive side of a battery and the other is tied to the negative end. The positive end of the battery pulls the electrons away from the plate closest to the positive battery terminal. The negative battery terminal pushes electrons towards the other capacitor plate, giving you the storage capacity of the capacitor.
When you put the capacitor in series, I can see the pull of electrons when the first amplifier goes positive in its output voltage but do not see the push on the input side of the capacitor at the next stage. With that, I do not understand how the DC voltage level is not transferred through the capacitor and the AC voltage does.
Thanks for reading this!! All help is greatly appreciated!
In my example, when the DC + AC output voltage from the first stage goes positive, the electrons pull away from that plate closest to the output amplifier. How does that interaction affect the other plate on the input side of the next amplifier?
I always looked at capacitors from a DC perspective where one end is tied to the positive side of a battery and the other is tied to the negative end. The positive end of the battery pulls the electrons away from the plate closest to the positive battery terminal. The negative battery terminal pushes electrons towards the other capacitor plate, giving you the storage capacity of the capacitor.
When you put the capacitor in series, I can see the pull of electrons when the first amplifier goes positive in its output voltage but do not see the push on the input side of the capacitor at the next stage. With that, I do not understand how the DC voltage level is not transferred through the capacitor and the AC voltage does.
Thanks for reading this!! All help is greatly appreciated!