Hal2000 wrote:
OK, I didn't look ahead for the answers - but here's what I think:
1. It's a frequency dependent load. At low frequency, the load on Vin
is R2. At high frequency, the load is 0.
2. If gain is 100, then you can no longer assume V+ equals V-, and the
circuit won't work the same. The assumption comes from Vout = Aol (V1
- V2), when Aol is large (10^4), Vout/Aol can be ignored and V1 = V2.
3. not sure
4. also not sure and I'm getting sleepy :-)
gene
one correction - the load at large frequencies is low, not 0 ohms. In
other words, at large F, the load is infinite. This looks a lot like an
inductor.
