[Amps] RF Chokes

[Will Matney]

Actually, the Z-28 was around 40 to 47 uH if I remember. They used some  
mighty fine resistance wire to wind it (low resistance though). An  
engineer there told me that was done to help with the resonance but's it's  
been so long I forget a lot of the details. They count on the hollow  
ceramic form and coating to dissapate heat so a finer wire could be used.  
However, I've sure changed a bunch of those orange boogers which was burnt  
in two too!

Best,

Will



On Mon, 31 Jan 2005 12:55:04 EST, <Dennis12Amplify at aol.com> wrote:

> A 22 uH air coil choke can be wound on a 1/2" diameter form with a   
> length
> of about 2" using about 22 - 26 gage wire. If I recall, it  takes about  
> 90
> turns, but don't hold me to that.
>
>
> That sounds a lot like an OHMITE Z-28 choke.....
> Regards,
> Dennis O.
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