[Amps] Ceramic capacitor ratings

[Gary Schafer]

> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
> Behalf Of Peter Chadwick
> Sent: Friday, April 13, 2007 5:10 PM
> To: amps at contesting.com
> Subject: Re: [Amps] Ceramic capacitor ratings
> 
> Gary,
> I would argue that if the impedance presented to the plate is the same,
> then the loaded Q should be pretty much the same. The laod impedance that
> the plate sees affects directly the power output, so for equal everything
> else, the laoded Q of the tank ought to be the same, and thus the
> circulating  current,
> The impedance across the input of the pi is determined by the component
> values: if the loss goes down but the values stay the same, to a first
> approximation, the input impedance is the same. So if it's tuning with
> different values, it suggests that it not just the inductance and q in the
> coil has changed. But, if the loaded Q is constant, and the capacitor
> values are constant, the circulating current at any power level must be
> constant. The loaded Q is a function of the impedance that the network
> offers to the plate of the tube.

Hi Peter,
But isn't loaded Q also dependent on coil loss and circulating current
dependent on loaded Q?  See my comments to Manfred.

73
Gary K4FMX