Op amp as INVERTING AMPLIFIER

A "feedback" resistor is used to reduce the gain of the op amp.

In general, the definition of the gain (A) of an amplifier is

In the particular case of an op amp with negative feedback (as in this circuit) it can be shown that the gain can be calculated using

Using R_in = 10k and R_f = 33k, take at least two readings of V_in and V_o in order to verify this relation.

• Operational Amplifiers
• Op Amp as COMPARATOR
• Op amp as NON-INVERTING amplifier