[time-nuts] Minicircuits 10% discount in December

[Bob Camp]

Hi

> On Nov 27, 2014, at 5:59 PM, Jim Lux <jimlux at earthlink.net> wrote:
> 
> On 11/27/14, 3:10 PM, Gerhard Hoffmann 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
>> 
>> <
>> 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.
>> 
> 
> Analog Devices seems to use these for their various application circuits
> Up to 3 GHz is the Mini-Circuits TC1-1-13.
> From 3 GHz to 4 GHz is the Johanson Technology
> 3600BL14M050.
> From 4.9 GHz to 6 GHz is the Johanson Technology
> 5400BL15B050.

For pre-wound parts, there are a number of outfits that will sell you sub $1 transformers. How well they work .. who knows. 

One example:

http://www.digikey.com/product-detail/en/MABA-007159-000000/1465-1302-2-ND/4429718

There are other parts in the same series at similar prices. Don’t want to go for the 2K pc minimum order? Price roughly doubles. 

Bob


> 
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