Shortwave "hum"
 

I meant to post this several months ago, but Ihtink I got sidetracked.
A quick google beta search di not reveal such a post, so if it is
a duplicate, sorry.

I HATE #%$^&*! wall warts, mainly because they are soruces of evil RFI.
The same techniques can be used on !ALL! power diodes. Such effort is
well worth the time and minor expense. I was able to really quiten the
RFI sources in our home.

http://home.computer.net/~pritch/shortwav.htm

Terry

On 30 Aug 2005 08:53:48 -0700, wrote:

I meant to post this several months ago, but Ihtink I got sidetracked.
A quick google beta search di not reveal such a post, so if it is
a duplicate, sorry.

I HATE #%$^&*! wall warts, mainly because they are soruces of evil RFI.
The same techniques can be used on !ALL! power diodes. Such effort is
well worth the time and minor expense. I was able to really quiten the
RFI sources in our home.

http://home.computer.net/~pritch/shortwav.htm

Terry

Amazing what $10 worth of ferrites can do.

No law against building an outboard filter/regulator circuit either.

In article .com,
wrote:

I meant to post this several months ago, but Ihtink I got sidetracked.
A quick google beta search di not reveal such a post, so if it is
a duplicate, sorry.

I HATE #%$^&*! wall warts, mainly because they are soruces of evil RFI.
The same techniques can be used on !ALL! power diodes. Such effort is
well worth the time and minor expense. I was able to really quiten the
RFI sources in our home.

http://home.computer.net/~pritch/shortwav.htm

Good fix it advice except for the cap value for bypassing the diodes is
a little large.

The theory behind the hum is wrong though.

--
Telamon
Ventura, California