Hello everyone,
I am playing around with small-signal AC amplification and have a question about DC offset. Let's say you have a signal that swings from 100mV to -100mV or 200mV in magnitude. If a DC offset is introduced and the signal is then amplified by a gain of 10 you will end up with a signal that is about 2V in magnitude but will swing around a point determined by the amount of DC offset introduced.
This is where I am stuck, what is the best way to eliminate this DC offset after amplification? I'd like to have a signal with a larger magnitude but still swings positive and negative through zero. For now, all of my circuits use transistors, capacitors, and resistors only. I'd like to avoid using ICs, op-amps for example, to develop a better understanding of what is actually going on.
I am playing around with small-signal AC amplification and have a question about DC offset. Let's say you have a signal that swings from 100mV to -100mV or 200mV in magnitude. If a DC offset is introduced and the signal is then amplified by a gain of 10 you will end up with a signal that is about 2V in magnitude but will swing around a point determined by the amount of DC offset introduced.
This is where I am stuck, what is the best way to eliminate this DC offset after amplification? I'd like to have a signal with a larger magnitude but still swings positive and negative through zero. For now, all of my circuits use transistors, capacitors, and resistors only. I'd like to avoid using ICs, op-amps for example, to develop a better understanding of what is actually going on.