In this Ch8 of Semiconductors you have the following image:
The explanation is that:
1. As Vin increases, it makes Vo greater.
2. As Vout gets greater (and since it is fed back to Vn (the inverting input), then a greater voltage is produced at this terminal.
3. As seen before, a greater voltage at Vn will tend to produce a smaller Vo. So this is why Vo goes down. Cause is greater Vn, effect is smaller Vo. This is just how the opamp works internally, which results in reducing Vo.
This is only for opamps configured with negative feedback? Iow, Vo will only go down when Vn is large, if there is negative feedback? Because I recall when starting opamps in the previous page that a large + voltage to Vn (inverting input) would generate a smaller Vo. So its not really a matter of the negative feedback, is it?
The explanation is that:
1. As Vin increases, it makes Vo greater.
2. As Vout gets greater (and since it is fed back to Vn (the inverting input), then a greater voltage is produced at this terminal.
3. As seen before, a greater voltage at Vn will tend to produce a smaller Vo. So this is why Vo goes down. Cause is greater Vn, effect is smaller Vo. This is just how the opamp works internally, which results in reducing Vo.
This is only for opamps configured with negative feedback? Iow, Vo will only go down when Vn is large, if there is negative feedback? Because I recall when starting opamps in the previous page that a large + voltage to Vn (inverting input) would generate a smaller Vo. So its not really a matter of the negative feedback, is it?