[Amps] High C out

[Will Matney]

A 300 nH coil (0.3 uH) is not very much. Assuming this would be the tank  
coil, the 10 meter end being the largest in size, one might just squeeze  
the coils together to raise the inductance enough to bring it in tune. If  
not, adding 1 to 2 turns of the same size wire, and same diameter would  
most likely do it. A dip meter would be easier to use to find the exact  
placing of the tap on the coil if it has taps. According to the way the  
tube is ran and tube type, some at a higher frequencies dont need a tune C  
in order to tune correctly because the tubes output C is high enough and  
takes care of it. In the amps I've seen this way, a load C was all that  
was used.

Will


On Fri, 21 Jan 2005 09:00:56 -0800, Chris <rfcrazy at cox.net> wrote:

> Can anyone tell me what size wire and dimensions to use for a 300 nH
> coil? I don't have an inductance calculator.  I am having a problem with
> a 3cpx5000 that has high C Out.  The tune vacuum cap is a backed all the
> way out in order to tune. I read on web site that you can use a 300 nH
> coil from anode to C1 to rectify this.
> Thanks for the help,
> Chris
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