calsonic2009
Newbie level 3
I have a problem dealing with differential amplifier input
According to this circuit we have to applied the same input(+-) voltage at 2 side of the circuit (vd/2) and (-vd/2) in order to get voltage gain.
**broken link removed**
- My question is why the input voltage have to be the same and (+-).
- Second question is if comparing the first circuit to the second circuit below, Is it the same circuit?
- If it's the same why can we applied any different voltage, but the on the first circuit we have to applied only the same voltage(+-).
Thank you
**broken link removed**
**broken link removed**
According to this circuit we have to applied the same input(+-) voltage at 2 side of the circuit (vd/2) and (-vd/2) in order to get voltage gain.
**broken link removed**
- My question is why the input voltage have to be the same and (+-).
- Second question is if comparing the first circuit to the second circuit below, Is it the same circuit?
- If it's the same why can we applied any different voltage, but the on the first circuit we have to applied only the same voltage(+-).
Thank you
**broken link removed**
**broken link removed**