[RFI] Comcast Wall warts

Cortland Richmond ka5s at earthlink.net
Tue Jun 21 02:55:54 PDT 2011


I am preparing to replace several  5V switchers for USB port expanders with
a common Lambda 5A 5V open-frame PS.  We may not be able to do this for
long; efficiency regulations  actually forbid making (and maybe selling)
linear-regulated (i.e.: dissipative) power supplies

Cortland
KA5S

-----Original Message-----
From: rfi-bounces at contesting.com [mailto:rfi-bounces at contesting.com] On
Behalf Of KD7JYK DM09
Sent: Monday, June 20, 2011 7:56 PM
To: rfi at contesting.com
Subject: Re: [RFI] Comcast Wall warts

"The wall warts were extremely noisy and generated so much hash I was unable
to listen to any AM radio in my entire home."

I replace such noisy supplies with 25 cent linear supplies of the same
specification bought at a thrift shop.

Kurt



More information about the RFI mailing list