[TenTec] Herc 2 LP Cap?

[Steve Hunt]

C42 is a shunt component on the *input* side of the LPF - the voltage 
across it is the full output voltage of the four combined PA modules, 
fundamental plus harmonics.

At 14MHz it's reactance is 114 Ohms. The current it flows is given by 
simple Ohm's law: I=Vout/114 irrespective of what else is in parallel 
with it.

Steve G3TXQ




On 27/08/2013 22:05, Phil Chambley, Sr. wrote:
> Those capacitors are a part of the shunt components in the low pass 
> filter network.  They are not passing all of the current generated by 
> the amplifier.  They are passing only that part of the harmonic energy 
> that makes it that far through the filter, and then only half of that, 
> since there are two of them in parallel.  Without drowning in 
> arithmetic, I suggest that a good quality ceramic disc will probably 
> be adequate.
>
> Phil C. Sr.
> k4dpk
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