[time-nuts] Minicircuits 10% discount in December
kb8tq at n1k.org
Thu Nov 27 19:38:08 EST 2014
I’ve been using their products (and their competitors) to make transformers for at least 40 years. It’s amazingly easy to do. The problem has always been finding the raw cores without buying a ton of them at a time.
> On Nov 27, 2014, at 6:34 PM, Dave M <dgminala at mediacombb.net> wrote:
> Here are a couple of links to some Fair-Rite documentation that can help you determine which cores will work for broadband transformers
> Use of Ferrites in Broadband Transformers
> And the current Fair-Rite product catalog
> Dave M
> Bob Camp wrote:
>>> On Nov 27, 2014, at 5:10 PM, Gerhard Hoffmann <dk4xp at arcor.de> wrote:
>>> Am 27.11.2014 um 23:30 schrieb Bob Camp:
>>>> Finding the RF transformer parts is still a bit of a challenge.
>>> No. These work quite good for me:
>>> CX2074 4:1 CT
>>> CX2147 1:1 CT
>> To get back to the original post:
>> Which Fair-Rite cores listed on Mouser can be used for making
>> There are a variety of people making pre-wound parts.
>>> The 1:1 is optimum for the NIST doubler at the sources, btw.
>>> The 4:1 as an autotransformer 9:1 at the drains. (2*BF862).
>>> Gives you 13 dBm @ 2f for 13 dBm in at 1f upto 40 MHz in.
>>> Still searching a good balun xformer for 800 MHz in.--> 1600 out.
>>> regards, Gerhard
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