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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