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
2016 engineering grads can expect to earn an average salary of $65,000 right out of the gate. Petroleum engineers' wallets are much fatter, though -- they are expected to earn about $20K more.
3D printing is now adding value to manufacturers at all steps along the business value chain. Come find out how at a talk by John Jaddou at next month's Embedded Systems Conference in Minneapolis.
From IoT and M2M to flexible robotics and consumer HMI, the advances in smart manufacturing are being deployed on the packaging floor.
These new 3D-printing technologies and printers include some that are truly boundary-breaking: a sophisticated new sub-$10,000, 10-plus materials bioprinter, the first industrial-strength silicone 3D-printing service, and a clever twist on 3D printing and thermoforming for making high-quality realistic models.
Ear-based heart-rate monitoring gained momentum recently, as sensor maker Valencell Inc. announced it has licensed its biometric earpiece technology to Samsung Electronics Co. Ltd for use in so-called “hearable devices.”
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.
Aug 8 - 12, Getting Hands On with Arduino Mechatronics
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.
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