William K.
User Rank
Ringing in my head
William K.   6/30/2011 3:22:52 PM
The resonance of ferrite winds up being very useful in ultrasonic cleaners in that it allows a higher level of energy transfer than would be available at a nonresonant frequency. Some disk capacitors exhibit a similar ringing due to a piezoelectric effect.

Rob Spiegel
User Rank
Re: Frequencies in circuits
Rob Spiegel   6/29/2011 5:58:55 AM
Jason, we contacted our contributor to find the answer to your question about the ringing. He said he'll contact team members on the project to find out what was done to completely remove the ringing.

User Rank
Frequencies in circuits
Jason   6/28/2011 12:27:38 PM
Frequencies are often times found in circuits where most would not expect it.

I deal with RF Amplifiers, and we have one circuit that uses a simple ferrite that is rectangular with a 75-ohm strip of wire through the center of it.  As we increase the power out of the amplifier, the ferrites literally sing.  Albiet this is slightly a different cause than the article, it is an interesting phenomenon that can be found in many places.


By the way, what was ever done to completely remove the ringing, or was the epoxy solution the final one?

Partner Zone
Latest Analysis
Do you wear your ugly Christmas sweater while fighting zombies, or simply chill in front of your homemade entertainment center while your automated cat feeder keeps your feline friend at bay? Whatever you prefer, one of the following gadgets is sure to get your DIY motor running.
The design of products has been altered altogether through 3D printing. Parts that couldn’t be produced at all before 3D printing came along are often superior to conventionally produced parts.
Marine mussels and their interaction with the ocean environment has inspired a breakthrough in developing a nontoxic coating for organic electronic components that also could speed up the manufacturing process.
The Innovation Challenge Awards had one run-away winner at ARM TechCon 2016. Of the six awards presented, one company walked away with four.
Clearly, zombies are in this year -- taking over from a decade of vampire dominance in Halloween fashion.
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 10 - 14, Embedded System Design Techniques™: Getting Started Developing Professional Embedded Software
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9 | 10

Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Course November 8 - 10:
Sponsored by 3M
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Technology Marketplace

Copyright © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service