The topic of motors and motor control techniques is wide and varied. Part one of this two-part article will cover the principles of alternating-current (AC) motor operation and control. Part two will ...

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The Christian Science Church, and we’ve always been transparent about that. The Church publishes the Monitor ...

Sine-wave oscillators such as the Wien-bridge, state-variable, or quadrature oscillators, have an inherently undefined amplitude. Ideally, the poles of their feedback loop are on the jω-axis and the ...

Seems like today the debate between going with a stick or an auto in a classic Chevy is more heated than ever. With the advent of better electronics, mechanical innovations, and the natural ...

Almost continuously, someone in the world dies from a traffic accident; countless more suffer injuries. Moreover, the economic losses caused by traffic accidents are reaching astronomical proportions.

I’ve been a Subversion (SVN) user going on 9 years now. It’s been a great solution for source control throughout my career and I’ve implemented it at each stop along the way. It’s easy, reliable, and ...

In Part 1 of this two-part series, we presented a 3-phase, 480VAC motor circuit with its associated controls (Figure). We stepped through a logical, systematic approach to troubleshoot the main power ...