YES!
That's exactly why I go to Mini-Circuits.
Jim
On 11/27/2014 2:03 PM, Didier Juges wrote:
Another reason is reproducibility. If you or someone else wants to reproduce
your design, using a well defined and available commercial part makes it much
easier to achieve the same performance, particularly for RF components.
Didier KO4BB
On November 27, 2014 12:41:34 PM CST, "Richard (Rick) Karlquist"
<rich...@karlquist.com> wrote:
On 11/27/2014 7:07 AM, Tim Shoppa wrote:
For a hobbyist doing things a few at a time, what advantage is there
to
buying RF transformers made by Mini-circuits etc., vs winding them
using
commonly available ferrite cores/binocular cores?
If I needed to do a production run of 1000+ boards with tiny SMT
transformers, sure, no problem buying them from mini-circuits or a
distributor etc. But for hobbyist stuff seems far more flexible to
wind
them onesy-twosy using not so tiny cores and windings selected for
the
particular application.
Tim N3QE
You need the tiny cores to get the performance of the MiniCircuits
transformers. You just can't get the same bandwidth using macro sized
"binocular" cores. Now, if you don't need a lot of bandwidth, then
what you are saying could make sense. Another issue is stray
capacitance. Considerably lower with a tiny core.
I have spent many hours characterizing MiniCircuits transformers
beyond the data sheet specs, and dissecting them to learn how they
do it. They really do have a lot of rocket science in them. In
terms of the engineering I am buying (especially in a one-off
application) they are ridiculously cheap. And I say that as a fairly
knowledgeable transformer designer in my own right.
I do keep binocular cores around for higher power transformers, and
for "emergencies" when I need a transformer "yesterday".
Rick Karlquist N6RK
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