In the last Circuit VR we looked at some basic op amp circuits in a simulator, including the non-inverting amplifier. Sometimes you want an amplifier that inverts the signal. That is a 5V input res… ...

The history of overdrives really starts with the op-amp, a component designed to create distortion-free amplification. Circuit designers took these chips and started to make stompboxes that used this ...

Notice how this circuit fits the second rule, though. When the input changes, the op amp makes its output equal because that’s what makes the + and – terminals stay at the same voltage.

For example, much has been written on how to stabilize op amp circuits with excessive capacitive loading. My favorite reference on op amp circuits is Stout & Kaufman’s Handbook of Operational ...

Rearranging the capacitors so that the feedback curve is reversed creates a high-pass filter as shown in Fig. 5. A downside of these circuits is the progressive shifting in phase of the signals going ...

Basic Op-Amp Circuits Comparator circuit A comparator circuit (Fig. 1) compares two input voltages and outputs a binary signal indicating which is larger.

An improved multiple-input op-amp summer can be analyzed more easily than the one in Figure 3. This is because the general design equation can be expressed more simply (Equation 4).

In the last column (Simulating op amp noise) I showed how to do simple and fast simulations on op amp circuits to get a handle on what kind of noise performance to expect. As can be expected with any ...

As mentioned, the gain is independent of the supply voltage. For more about op-amps, see Op-Amps Are Used Widely in Broadcast Circuits Note: The deadline to sign up for the next SBE certificate exams ...