HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
William K.
User Rank
Platinum
Ringing in my head
William K.   6/30/2011 3:22:52 PM
NO RATINGS
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
Blogger
Re: Frequencies in circuits
Rob Spiegel   6/29/2011 5:58:55 AM
NO RATINGS
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.

Jason
User Rank
Gold
Frequencies in circuits
Jason   6/28/2011 12:27:38 PM
NO RATINGS
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
Major changes are happening in the world of 3D printing and additive manufacturing materials, machines, and software. If the industry -- and the design engineers and OEMs it serves -- are to grow, all three areas must become much more tightly integrated.
Americans spent more than $60B on their pets in 2015. Folks are definitely spending their money on more than dog food. We’re spending on things like dog spas and fancy toys, and as you can imagine, the wearables market is becoming well represented here.
Collaborating researchers in Australia and the United States have discovered nanotechnology for thermophotovoltaic cells that could boost solar-energy harvesting.
Time was when sports equipment was made only from common, everyday, low-tech materials. But now sports equipment has a new, high-tech ingredient that is helping players take their game to the next level.
Every now and then Design News likes to revisit some of our favorite Gadget Freak projects. Robotic hands, manipulated Kindles, and smart recycling cans round out the latest crop.
More:Blogs|News
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9


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 September 29-October 1:
Sponsored by Proto Labs
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