[time-nuts] Distribution Amp project

[dave powis]

Old network cards are an excellent source of isolating transformers, filters and small DC-DC converters.  If you need to distribute sinewave 10MHz signals (some items accept or even need a square wave) then the filters that can be recovered from the cards are very useful - they include isolation transformers.

There's an article about it in the Distribution Amp section of my webpages - go to http://g4hup.com/DA/DA.htm and follow the 'filters, transformers and DC converters' link.  The article was originally published in Scatterpoint, the monthly publication of the UK Microwave Group.

Best 73,
Dave, G4HUP

http://g4hup.com




________________________________
From: Dave Baxter <dave at uk-ar.co.uk>
To: time-nuts at febo.com
Sent: Thursday, 30 July, 2009 1:54:19 PM
Subject: Re: [time-nuts] Distribution Amp project

Old scrap PC network cards?

The DC-DC isolated converters are useful to pull too.

Dave Baxter.


--------------- Original Message ---------------

Message: 6
Date: Thu, 30 Jul 2009 00:16:12 -0400
From: "Dave M" <masondg44 at comcast.net>

.
.  Trimmed !
.

Also, looking for a source of low cost 1:1 and 2:1 Ethernet
transformers. 
I've tried the local computer shops, but they don't seem to be
interested in 
helping.

Dave M

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