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ISSUE DATE: MAY 13, 1998 OPTIONS
IGBTs, Unified codesign language, CeBIT 98, ADCs, EMC testing, CompactPCI

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May 13, 1998 - In This Issue

[Design Application]
Conduct EMC Testing Economically In-House
 — Contributing Author

[Ideas For Design]
Sense junction temperatures without calibration
Transistors can be used as a low-cost temperature sensors. Sensing temperature with a silicon junction often exploits the fact that the forward voltage drop has a temperature coefficient of −2.2 mV/°C. The problem with this method is that...  — Contributing Author

[Ideas For Design]
An almost-accurate rotation center
Most motion-control applications typically employ an optical disk or Hall-effect device in order to accurately count the number of times that a motor shaft rotates. While the following circuit lacks the accuracy of both the optical disk and...  — Contributing Author

[Ideas For Design]
Crystal filter for pure signals
Applications such as distortion and communications measurements require distortionless sine waves as input test signals. Distortion in test signals causes two problems. First, the test-signal-distortion content must be calibrated so it can be...  — Contributing Author

[Pease Porridge]
What's all this soakage stuff, anyhow?
Of course, this column is going to be talking about the Dielectric Absorption of capacitors. But that is much too long a phrase, so we'll call it soakage, or DA. The earliest manifestation of DA...  — Bob Pease





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