[RFI] Interesting video from Fair-Rite

[Dave Cole (NK7Z)]

Hi Jim,

The thing I find most interesting about this video is the ability of 
Fair-Rite to actually tailor the finished items to a task so exactly.

Speaking of tailoring items to a task-- my vendor had a 20% off sale 
last week and I bought a pile of FT240-31 devices.  I'm going to go wind 
a few chokes for this antenna season early!  :)

Thanks for the expansion on the devices in the video!

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 03/21/2018 01:25 PM, Jim Brown wrote:
> Thanks Dave. I also got the email.
> 
> Note that these are designed for power, and that 79 and 80 are MnZn 
> materials, so they exhibit dimensional resonance.
> 
> 67 is NiZn, so probably exhibits no dimensional resonance. It's a better 
> material than 61 above about 10 MHz for high power inductive components, 
> including transformers.
> 
> Fair-Rite does not consider 79, 80, or 67 useful for suppression, and 
> from the looks of their u' and u'' curves, it's easy to see why.
> 
> Note also that the power components being discussed in the video are 
> intended for use in circuits like SMPS.
> 
> 73, Jim K9YC
> 
> On 3/21/2018 11:50 AM, Dave Cole (NK7Z) wrote:
>> https://www.youtube.com/watch?v=0aseA1mbnD4&feature=youtu.be
>>
>> covers a few of the materials they offer.
> 
> 
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