As a rule, disk capacitors are not well suited for use as a TC tank
capacitor (they are OK in a protection network). The dielectric is lossy
and the losses cause it to get hot. To make matters worse, the dielectric
constant changes as a function of temperature so the capacitance changes as
it runs and heats up, making it impossible to keep in tune. Sorry!
Regards, Gary Lau
MA, USA
On Sat, Feb 21, 2015 at 7:11 PM, andrea ferrari <ferro1388@xxxxxxxxx> wrote:
> hi all!
> uaooooooooooooOOOOO!
> Stefan very good work! Thumbs up :)
> today I have tried to follow yours opinion...and my project works well with
> 2.2 nF..... but I have noticed that the primary capacitor (three (6.8 nF
> 12kV)disc ceramic capacitor (blue color) in series (total= 2.2 nF 32kV) )
> tend to become hot....why?
> I think that I have a proper insulation voltage (32 kV).....very
> strange....I suppose that in this way my system's perfomance decreases :(
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