4–28 Two OP AMP circuits are shown in Figure P4–28.

Both claim to produce a gain of either +- 100.

(a) Show that the claim is true

(b) A practical source with a series resistor of 1 kΩ is connected to the input of each circuit. Does the original claim still hold? If it does not, explain why

Transcribed Image Text:

+ VIN VS Source + Circuit 1 1 kQ 100 ww VIN > w Circuit 2 FIGURE P4-28 vo + 199 vo +