(D)Element 3-30 OP Amps Flashcards
1
Q
What is the main advantage of using an op-amp audio filter over a passive LC audio filter?
A
op-amps exhibit gain rather than insertion loss
2
Q
What are the characteristics of an inverting operational amplifier(op-amp) circuit?
A
it has input and output signals 180 degrees out of phase
3
Q
Gain of a closed-loop op-amp circuit is determined by?
A
the op-amps external feedback network
4
Q
Where is the external feedback network connected to control the gain of a closed-loop op-amp circuit?
A
from the output of the inverting input
5
Q
Which of the following op-amp circuits is operated open-loop?
A
Comparator
6
Q
In the op-amp oscillator circuit shown, what would be the most noticeable effect if the capacitance of C were suddenly doubled?
A
the frequency would be lower
