[time-nuts] Minicircuits 10% discount in December

Jim Sanford wb4gcs at wb4gcs.org
Thu Nov 27 14:58:33 EST 2014

That's exactly why I go to Mini-Circuits.

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" <richard at 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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