jeffj@pedsga.UUCP (09/26/88)
I have a question worthy of the net's collective wisdom. My hearing extends into the high frequency end (>15kHz). I can hear several terminals and televisions 'squeal'. I understand that this is the flyback transformer at the scan frequency. Is there anything I can do to attentuate the squeal? How about a coating on the transformer? Inside the cabinet? I'm not interested in TEMPEST conformance, just reducing my headaches. Isn't there an OSHA limit for such stuff? Jeffrey Jonas allegra!io!mtune!petsd!pedsga!jeffj decvax!mcnc!rutgers!petsd!pedsga!jeffj
markz@ssc.UUCP (Mark Zenier) (10/01/88)
In article <716@pedsga.UUCP>, jeffj@pedsga.UUCP writes: > > I can hear several terminals and televisions 'squeal'. > I understand that this is the flyback transformer at the scan frequency. > > Is there anything I can do to attentuate the squeal? > How about a coating on the transformer? Inside the cabinet? Its usually the mounting hardware for the HV transformer. Try tightening the mounting hardware. Or rubber wedges around the transfomer coil. or just spreading a bunch of silicone caulk around the rectangular ferrite tranformer core. Mark Zenier uunet!pilchuck!ssc!markz "He did decide, though, that with more time and a great deal of mental effort, he could probably turn the activity into an acceptable perversion"-Mick Farren