There are, of course, many other types of amplifiers, as well as other reasons to use op amps such as oscillators, filters, and other even more exotic circuits. We’ll talk about some of them ...

The operational amplifier, or op amp, is one of the most basic building blocks used in analog circuits. Ever since single-chip op amps were introduced in the 1960s, thousands of different types ...

The major limitation of an ordinary diode, which leads to the principle of using diodes with op-amps, is that an ordinary diode cannot rectify voltages below V r, the cut-in voltage of the diode.

In the literature this circuit is either referred to as the single amplifier biquad (SAB) or as the standard tantalum active resonator (STAR). It is currently being used extensively in the Bell ...

After a brief review of the history of the K2-W vacuum-tube op amp, an LTspice model is used to create its schematic in ...