Tech Paper/Article

A technical paper or article from a magazine or other publication. These usually describe new or experimental techniques, materials, devices, etc.

Quartz Crystal Resonators and Oscillators for Frequency Control and Timing Applications – A Tutorial


John R. Vig

This extensive tutorial provides a thorough foundation for the understanding of piezoelectric/crystal resonators properties and behaviors. The table of contents provides insight into just how comprehensive this tutorial is:

1. Applications and Requirements
2. Quartz Crystal Oscillators
3. Quartz Crystal Resonators
4. Oscillator Stability
5. Quartz Material Properties
6. Atomic Frequency Standards
7. Oscillator Comparison and Specification
8. Time and Timekeeping
9. Related Devices and Applications

Near-field scanners let you see EMI


Arturo Mediano

Article by instructor Arturo Mediano about near-field scanners.

I love near field probes because they let me "see" magnetic and electric fields with an oscilloscope or with a spectrum analyzer. They let locate sources of emissions in board, cables, and systems. Near-field scanners also let you see emissions, particularly all over a board. That's hard to do with a single probe.

The Effect of DC/LF Current in Ferrites for EMI


Arturo Mediano

Arturo Mediano teaches courses on EMC/EMI and Signal Integrity for Besser Associates. He is a frequent contributor to industry magazines and journals on these topics. This article appears in the "Practical Tips" section of InCompliance magazine.

Ferrites for EMI suppression are usually chosen looking for high (resistive) impedance at the frequency of interest; but, sometimes, that ferrite is not working as expected. Perhaps you have saturation effects?

Using Spread Spectrum Techniques to Reduce EMI


Arturo Mediano

Instructor Arturo Mediano has written an article for In Compliance magazine:

Digital and power electronic systems can reduce the radiated and conducted emissions profile using spread spectrum techniques. Typically, no more than 10-12dB can be obtained with those techniques but the result can be useful to comply with regulations...


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