

Welcome to "RF POWER 2", a collection of simple programs
useful for calculating component values commonly neeed
in general-purpose construction of high voltage power
supplies and RF power amplifiers using vacuum tube 
technology. Like the small-block Chevy, you just can't
beat a good tube amp for cost-effective reliability 
and abuse-tolerant performance.

Most of these programs grew out of a desire to experiment
with different variables for Linear RF power amplifiers. 
Unfortunately, a "ground-up" approach to the design of
a PI-L output circuit for use with specific voltages,
conduction angles, and tube designs, while producing 
very accurate results when pencil is put to paper, 
is extremely time consuming. These were written in the 
old DOS days, but work well on any "PC".

The free "dosbox" program is now included so these can 
be run on newer versions of windows computers, and 
has been tested on Windows 7, 64 but, AMD 8-core.

Therefore the user should not expect whiz-bang programming,
but rather quick, close results when reasonable data 
are entered. In some cases, you may bomb out, for instance
if you try to use values which are too far outside the 
range customarily found in tube gear, such as a Q of 3 in 
the plate circuit, etc.. Designing 12 volt power supplies 
is not a good idea with these programs, but if you want 
to design a 4000 volt power supply and a 4-1000A AB1 stage,
you will be pleased! In any case, an error will terminate 
the program and return to the DOS prompt.

These programs are released into the public domain.


Listing of programs:

BRIDGPWR EXE        11,504
design a power supply with a bridge recitifier and a 
capacitor-input PI filter. It gives an approximation 
and is more accurate when a fairly large input capacitance
is specified, such as 50 uf. needless to say, following this
with a choke an another large capacitor will almost 
eliminate ripple. very good for AM linear amps.

VSWR     EXE         8,208
discover the maximum voltage impressed on a transmission 
line due to high SWR.

TEACO2   EXE         9,232
very simple model for a transverse excitation, 
atmospheric-pressure carbon dioxide laser 
(not exactly ham radio, but...).

SOLECOIL EXE         6,096
approximation of the inuctance of a solenoid coil.

SERCAP   EXE         6,768
capacitors in series - the value.

RESPAR   EXE         6,448
resistors in parallel -  the value.

PWRDENS  EXE         9,072
approximation of the far-field power density from a radiator.

PIOUT    EXE        13,104
PI and PI-L calc for those RF amplifiers. gets you extremely 
close, proven with 4-1000A and parallel 6146 amplifiers.

MATCH    EXE         9,776
PI-network matching circuits. Like PIOUT.EXE except asks
for input Z instead of calculating it.

LREACT   EXE         5,936
reactance of an indutor at frequency, and the resonant capacitance.

IVSPOWER EXE        11,616
calc for voltage-doubler power supply with PI filter. Otherwise
it's just like bridgpwr.exe.

INDPAR   EXE         6,784
Inductances in parallel.

IMSERCT  EXE         9,824
calc for impedance of a series circuit.

HVCAP    EXE         7,616
make useful HV capacitors from window glass and foil!

DIELECTR EXE         4,368
displays common dielectric properties of materials.

CREACT   EXE         5,888
reactance of a capacitor at frequency and the resonant inductance.

thats all!
Patrick Jankowiak KD5OEI

DEC 2005