- #1
vvkannan
- 23
- 0
i have problem in understanding the basics of op-amp
let's consider an opamp as voltage follower (i.e) the output is connected to inverting terminal directly and if V1(say 3v) is applied as input voltage ,to the non-inverting terminal, the output gets saturated immediately +v-cc(power supply,say +12) which is fedback to inverting terminal(V2).now the inverting terminal voltage(12 against the 3 in non-inverting) is more so the output should saturate to -Vcc(say -12) which is fedback to inverting terminal.now V1 -V2 is positive and hence again we get +Vcc (due to very high gain).in this way it again shud act in a non linear way.
but why and how it maintains the voltage nearer to input, given at non-inverting terminal at output)?
let's consider an opamp as voltage follower (i.e) the output is connected to inverting terminal directly and if V1(say 3v) is applied as input voltage ,to the non-inverting terminal, the output gets saturated immediately +v-cc(power supply,say +12) which is fedback to inverting terminal(V2).now the inverting terminal voltage(12 against the 3 in non-inverting) is more so the output should saturate to -Vcc(say -12) which is fedback to inverting terminal.now V1 -V2 is positive and hence again we get +Vcc (due to very high gain).in this way it again shud act in a non linear way.
but why and how it maintains the voltage nearer to input, given at non-inverting terminal at output)?