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 <d...@uk-ar.co.uk> To: time-nuts@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" <masond...@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 _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.