2020-04-06 - Bill Schweber

The Doppler Effect: Existed Before Railroads?

Of course the effect did exist before the railroads. However, it wasn’t yet defined by the physics of the day, nor was it even noticed before the railroads...

2020-04-03 - Merlin Blencowe

Variable gain superbal circuit preserves CMRR

This adaptation of a superbal circuit allows for adjustable gain without CMRR degradation.

2020-04-02 - Bill Schweber

Mistakes were made, even in a simple 3-wire AC hookup

The many ways of making basic mistakes never fails to amaze, as this engineer saw in a basic 3-wire AC connection.

2020-04-01 - Arthur Pini

Oscilloscope cursors complement other measurement tools

It may seem somewhat archaic to retain an oscilloscope’s original measurement tools of screen graticules and cursors, but these tools are hardly outdated.

2020-03-31 - Yoelit Hiebert

DOE lighting workshop explores lighting science and systems

This year’s DOE Lighting R&D Workshop covered topics like lighting for plants and human health, and integration of lighting and controls into new construction.

2020-03-30 - Chang Fei Yee

Influence of transmitted signal drive strength on electromagnetic interference

This article studies the influence of IC output drive strength on electromagnetic interference (EMI) by performing post-layout simulation of signal integrity and EMI using Mentor Hyperlynx.

2020-03-27 - Pradeep Shenoy

Power Tips #96: Dynamically adjust negative output voltages

This power tip delves into the challenge of dynamically adjusting a negative output voltage.

2020-03-26 - John Dunn

Protecting antennas

The method used to protect antenna installations from humans is similar to protecting bird houses from squirrels.

2020-03-25 - Philip Pratt

JESD204B standard speeding data interfaces in space applications

The JESD204B chip-to-chip data interface will enable a breakthrough that wideband communications designers need in space applications.

2020-03-24 - Kendall Castor-Perry

Five things you should know about RMS

The problem is that for any unknown signal, the RMS 'value' can only be defined if you give a start and stop time for the relevant segment of signal.