In this test circuit, the op amp is placed in a unity-gain buffer configuration with its noninverting input grounded. Current meters are placed at both op amp inputs in order to measure Ib+ and Ib−, ...

Learn how to measure current and voltage and the advantages of parallel circuits.

The op-amps used are bit old-school FET devices, but aside from the high impedance input their performance is hardly critical. Yet another op-amp circuit to hold in reserve should you ever need to ...

That led to the entertaining “Circuit Breaker Challenge” part of the video below, wherein we learn just what it really takes to pop the breaker on a 15-Amp branch circuit.

Op amp noise is a deep subject, and detailing how to perform complete noise calculations is beyond the scope of this article. For a more complete journey into the topic, including techniques for ...