[GreenKeys] Parasitic Suppressors

[Harold Hallikainen]

Thanks for the comments. Yes, I am proposing just the ferrite to supply
R+Jax. No additional resistor. The bead in my notes has an impedance curve
somewhat similar to the RL circuit. I agree, though, that there may be an
issue due to DC (loss of permeability due to core saturation), temperature
(again, permeability decrease), and power dissipation. I will look into it
more.

Thanks!

Harold


On Tue, December 28, 2021 3:54 pm, Ralph Mowery wrote:
> My main thought is the ferrite beads may overheat and crack.  Another is
> that at high DC current on the wire may render the ferrite less effective.
> The beads may choke off too much of the desired frequencies unless the
> correct mix is used.
>
>
> Ralph ku4pt
>
>
>
> -----Original Message-----
> From: greenkeys-bounces at mailman.qth.net
> [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Harold Hallikainen
> Sent: Tuesday, December 28, 2021 5:06 PM
> To: Green Keys
> Subject: [GreenKeys] Parasitic Suppressors
>
> After once again repairing the parasitic suppressors in my Dentron
> Clipperton L, I got to thinking (which is dangerous!) about the use of
> ferrite beads as parasitic suppressors. My notes are at
> https://w6iwi.org/ParasiticSuppressor/ .
>
> Any comments?
>
> Thanks!
>
> Harold
> https://w6iwi.org
>
>


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