Electronic Design

So…Use of Analog Computers is “A Question of Time” (Part 1)

Our new tech editor for Analog looks at the evolution of “analog” and how it inadvertently spun off a pop music genre. Operational Amplifiers are exactly that—amplifiers that can perform mathematical ...
EDN

When to calibrate your system offset voltage and gain error

The input offset voltage (V OS) of an operational amplifier (op amp) is modeled as a DC error source that acts like a voltage source on the noninverting input. It can ...
EDN

Component tolerance sensitivities of single op-amp filter sections

Several manufacturers offer op amp-based filter design tools [1-3]. Some tools choose off-the-shelf capacitor values, but others select non-standard ones. The option to alter passive component ...
Electronic Design

So…The K2-W Analog Computer Op Amp Has Mad Scientists’ Fingerprints on It (Part 1)

In the first of three parts, Andy hypothesizes that the K2-W Analog Computer Op Amp’s design has some unrevealed mad science in its input-stage design. 1. K2-W Op Amp schematic from Bob Pease’s ...