Oct
24

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P-channel JFET

Basics of FETs

By David Herres The field-effect transistor (FET) resembles the bipolar transistor in some of its behavioral characteristics, but its inner workings are markedly different. Rather than base, emitter and collector, FETs…

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Oct
24

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Sine Wave

Basics of sine waves

By David Herres Oscilloscopes typically display the amplitude of a signal  on the Y axis as a function of time on the X axis. The resulting display can take the…

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Oct
24

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KeithleyTH

Android app works with sourcemeters

Keithley Instruments has developed a free app for Android™-based smartphones and tablets that interacts with a Keithley Series 2600B SourceMeter SMU instrument via its front panel USB interface….

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Oct
16

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PNP symbols

Basics of modeling transistors

By David Herres All transistors operate according to the exact same physical principles as diodes, the only difference being that they have greater complexity because there are additional P-N…

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Oct
16

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diode rectifier

The basics of diodes

By David Herres Ordinary crystalline silicon semiconductors work according to the same physical principles as the old-world galena (PbS, lead sulfide) cat’s whisker radio-frequency detectors in early crystal sets. The…

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Featured

VFD simple schematic

Variable Frequency Drives: Viewing the DC Bus

Thursday, September 25, 2014

By David Herres In the field of motion control it’s often necessary to vary the speed of an electric motor and even reverse its direction of rotation. When…

The test center also houses a classroom and lab for training Stark State students in electrical and mechanical engineering as well as alternative energy programs including solar and wind energy, oil and gas, and fuel cells.

Timken and Stark St. College open Technology and Test Center

Tuesday, July 16, 2013

A collaboration between The Timken Co. and Stark State College led to development of the new Technology and Test Center, the first testing facility of its kind to…

RunoutAppIconth

Lion Precision’s Application Note To Improve Shaft Runout Measurement

Thursday, July 11, 2013

To help designers, engineers, and maintenance staff make better shaft runout measurements, Lion Precision has a new application note available on their website. Real-time shaft runout measurement is…

mixed-signal-oscilloscope-display-3

Digital Design Tips and Tricks with a Mixed Signal Oscilloscope

Wednesday, July 3, 2013

by Faride Akretch, Technical Marketing Manager, Tektronix Use an MSO to efficiently implement digital designs while verifying and debugging signals. As electronic products become faster and more complex,…