Re: Flyback with LAN transformers

On Jun 19, 10:18 am, Joerg <notthisjoerg...@xxxxxxxxxxxxxxxxxxxxx>
wrote:
Paul Mathews wrote:
On Jun 18, 1:17 pm, Joerg <notthisjoerg...@xxxxxxxxxxxxxxxxxxxxx>
wrote:

Ok, most of us have used LAN tranformers for power transfers. However,
their datasheets are skimpy at best and usually contain no information
about the core. Of course it won't contain any regular air gap and you
cannot easily install one later because it's all potted up.

So, did anyone use these for a flyback design yet? Low power, something
well under 100mW.

--
Regards, Joerg

http://www.analogconsultants.com

Purpose designed miniature flyback coupled inductors ('transformers')
are readily available a equally low prices, so why bother?

Where?

--
Regards, Joerg

http://www.analogconsultants.com- Hide quoted text -

- Show quoted text -

Some sources with very aggressive pricing on miniature flybacks
include Xfmrs, Inc, Premier Magnetics, Vishay/Dale, GB Int'l. Quantity
requirements for low prices are surprisingly low....you basicallly
have to cross their threshold for having the parts batch produced in
Asia. Prices in lower quantities are about 6x higher. We buy UR 1W
flybacks for about $.50 ea in 1K lots.
Paul Mathews

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