[time-nuts] Minicircuits 10% discount in December

Dave M dgminala at mediacombb.net
Thu Nov 27 19:34:12 EST 2014


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
http://www.fair-rite.com/newfair/pdf/Broadband.pdf

And the current Fair-Rite product catalog
http://www.fair-rite.com/newfair/pdf/Fair-Rite_Catalog_17th_Edition.pdf

HTH,
Dave M


Bob Camp wrote:
> Hi
>
>> 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:
>>> Hi
>>>
>>> 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
> transformers?
>
> There are a variety of people making pre-wound parts.
>
> Bob
>
>>
>> <
>> http://www.digikey.de/product-search/de/rf-if-and-rfid/balun/3539019?k=cx2074
>> >
>>
>> 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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