Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!agate!hughes@math.Berkeley.EDU
From: hughes@math.Berkeley.EDU (Eric Hughes)
Newsgroups: sci.electronics
Subject: Looking for vibration-noise abatement product
Message-ID: <25538@agate.BERKELEY.EDU>
Date: 16 Jun 89 18:04:03 GMT
Sender: usenet@agate.BERKELEY.EDU
Reply-To: hughes@math.Berkeley.EDU (Eric Hughes)
Organization: UCB Mathematics Department
Lines: 25

I have a pair of related problems I would like to get some advice on.
Both have to do with getting rid of various whines and buzzes induced
by various oscillations in my computer equipment.

The first is the flyback transformer in my CRT.  Occasionally it
whines pretty loudly, but a good whack on the side of the case makes
it go away.  Honest.  The other is an EMI/RFI filter and surge
protector which buzzes.  I've taken the case off and it looks like the
wire wound torroids are doing the buzzing.  Sometimes it is very loud,
other times not.

What I would like to find is some goop to spray on the components to
absorb and dissipate the vibration.  I would imagine that two
different products would be needed for the different frequencies
involved.  The surge protector is glued together and some liquid seems
to be the only way to get in contact with the torroid.  I have not
opened up the case of my CRT to see how the flyback is mounted.

Questions:  Is this approach feasible and safe?  Are there products
specifically designed for this, or will some common material suffice?

Any and all help appreciated.

Eric Hughes
hughes@math.berkeley.edu   ucbvax!math!hughes