Re: Losses in PI-filter output

Efficiency of a tank circuit or a Pi-tank circuit is given by -

Efficiency = Qi / ( Qi + QL )  * 100 percent,

where Qi is the intrinsic Q of the coil and QL is the loaded Q of the tank
circuit.


PROGRAMS AVAILABLE .

The following calculate L and C values for given load values and/or tube
operating voltages.

Pi_L_NET   and   Pi_TANK   also calculate harmonic suppression.

TRIODE1  and  TETRODE1  compute grid drive, tank circuit conditions and
efficiency for Class A, B & C operating conditions and angles.

Download progs in a few seconds from website below and run immediately.
...........................................................
Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
...........................................................



"arie" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Maybe not quite appropriate for this news-group..
>
> Does anybody know a pointer to a program or the methods
> of calculations so I can determine the losses occuring
> in a PI-filter output for a high-power tube amplifiers.
>
> I can calculate the required C1, L and C2 values given a
> certain anode voltage and current and a certain output
> impedance for a loaded Q of 10, 12 or other values, but
> what about losses depending on selected loaded-Q values
> related to harmonics suppression...
>
> Thanks in advance,
> Arie.