Re: Itsy Bitsy Teeny Weeny Transformers

Article View: sci.electronics.design

Article #2262

Back to sci.electronics.design Previous Next

#2262

From: -:Install:-
Date: Thu, 22 May 2003 11:44

20 lines
2244 bytes

"Mike Diack" <moby@kcbbs.gen.nz> wrote in message
news:3eccb0e6.54530502@News.xtra.co.nz...
> I'm redesigning a device for blind navigation that I first designed a
> decade or so ago, which requires a transformer to drive an
> electrostatic transducer (sweeping 100..50KHz, around 100v P/P driven
> from a 6v P/P source).
> My first iteration used a (hand wound) Philips 10mm 3E25 toroid. I
> gave one of my original samples to a local transformer outfit and
> asked them to make me something smaller (and tidier!)
> Everything they came back with was bigger than my original.
> I have seen a polarisation tranny inside an AKG C460 microphone which
> is smaller than the size of a frozen pea. Admittedly this tranny only
> has to handle a single frequency wheras mine carries a sweep, but who
> can make trannies like that or where can the cores be sourced
> (preferably surface mount)
> cheers
> M

Isolation tranny from a Pcmcia modem ?? :)

Technical Details

Message-ID: <3eccb85e_1@news.iprimus.com.au>

Path:

arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!logbridge.uoregon.edu!snoopy.risq.qc.ca!chi1.webusenet.com!news.webusenet.com!feed.tor.primus.ca!news.primus.ca!53ab2750!not-for-mail

References: <3eccb0e6.54530502@News.xtra.co.nz>

Show Full Headers

Complete Article Headers

X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 112d1e,e37f8834cc3a8153
X-Google-Attributes: gid112d1e,public
X-Google-Thread: 103407,e37f8834cc3a8153
X-Google-Attributes: gid103407,public
X-Google-ArrivalTime: 2003-05-22 04:45:41 PST
Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!logbridge.uoregon.edu!snoopy.risq.qc.ca!chi1.webusenet.com!news.webusenet.com!feed.tor.primus.ca!news.primus.ca!53ab2750!not-for-mail
From: "-:Install:-" <whatever@for.com>
Newsgroups: sci.electronics.design,aus.electronics
References: <3eccb0e6.54530502@News.xtra.co.nz>
Subject: Re: Itsy Bitsy Teeny Weeny Transformers
Lines: 22
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2800.1106
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106
X-Original-NNTP-Posting-Host: 210.50.117.170
Message-ID: <3eccb85e_1@news.iprimus.com.au>
Organization: iPrimus Customer - reports relating to abuse should be sent to abuse@iprimus.com.au
X-Original-NNTP-Posting-Host: 127.0.0.1
Date: Thu, 22 May 2003 21:44:18 +1000
NNTP-Posting-Host: 203.134.67.67
X-Complaints-To: news@primus.ca
X-Trace: news.primus.ca 1053600248 203.134.67.67 (Thu, 22 May 2003 06:44:08 EDT)
NNTP-Posting-Date: Thu, 22 May 2003 06:44:08 EDT

Reply to Parent Message