The feedback resistor adds to the gain of an op-amp.

More Questions from Operational Amplifiers

• It takes 4 µs for the output voltage of an op-amp to rise from –14 V to +14 V. The slew rate of this op-amp is 3.5 V/µs.
• In a common-mode input to an op-amp, both inputs are connected to the same signal source.
• An op-amp has very low open-loop gain.
• This circuit is a differentiator.
• A 555 timer can be configured as an astable multivibrator.
• Operational amplifiers (op-amps) use internal capacitive coupling between stages.
• The TO-5 operational amplifier package can have 5 pins.
• This circuit is operating in a closed-loop mode.
• The voltage-follower amplifier circuit has a fixed voltage gain of approximately 10.
• If the frequency of an astable multivibrator is 54.86 kHz then its period is 1.82 s.

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