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" wrote in message
om...
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.