[Amps] Plate chokes

[Roger]

Vic K2VCO wrote:
> On 3/24/2010 1:14 PM, Gary Schafer wrote:
>
>   
>> Don't put a shorted strap around the choke. It will look like a shorted turn
>> and cause excessive current in the choke which may burn a section of the
>> choke out.
>>
>> Somewhere I read that you should not use a continuous band around either end
>> to terminate the ends of the choke winding. Same thing happens.
>>     
>
>   
The way I see it... The shorted turn/band around the RF choke, may or 
may not work well. It may or may not cause problems. IOW this is moving 
into experimental territory.  It'd be interesting to see how various 
configurations for continuous wound, gap wound, and gap wound with 
stepped diameters perform with various spacings and diameter of the 
shorted turn compared to the diameter of the choke sections.

Good Luck,

Roger (K8RI)

> I thought about this. But a choke isn't a high-Q device like a tank coil and there isn't a 
> lot of RF current in it. The shorted turn will reduce the inductance and increase the 
> losses (not a bad idea if it doesn't produce too much heat) and it does move the resonances.
>
> I will try this at low power, as Carl suggested, and see if it gets warm.
>