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New MMCCalc2 released
Hi All,
I have improved my MMCCalc program.
A number of people wanted to be able to match the MMC to their
transformers. While this is sort of an art, I was able to put in the
maximum LTR style cap calculation in so people can either select strings or
reduce the number of strings from there. simply type -1 instead of the
desired value you want to have the program find the LTR cap size. The
program is at:
http://users.better-dot-org/tfritz/MMCCALC2.ZIP
A sample output is:
-------------------------
MMC Calculator Ver. 2.1 2/19/2000 Terry Fritz
Transformer voltage = 15000
Transformer current = .06
Firing voltage = 21213.15
Fo = 82000
Break rate = 120
Cap value = 5.6E-08
Strings Caps/Str Capacitance Voltage Temp C Cost
1 2 28.00 3200 192.83 2.90 :-(( :-((
2 4 28.00 6400 48.21 11.60 :-(( :-((
3 6 28.00 9600 21.43 26.10 :-(( :-((
4 8 28.00 12800 12.05 46.40 :-(( :-|
5 10 28.00 16000 7.71 72.50 :-(( :-)
6 12 28.00 19200 5.36 104.40 :-| :-)
7 14 28.00 22400 3.94 142.10 :-)) :-))
--------------------------------------------------------------------
8 16 28.00 25600 3.01 185.60 :-)) :-))
8 17 26.35 27200 2.67 197.20 :-)) :-))
9 18 28.00 28800 2.38 234.90 :-)) :-))
9 19 26.53 30400 2.14 247.95 :-)) :-))
10 20 28.00 32000 1.93 290.00 :-)) :-))
-------------------
The program underlines a "safe" MMC cap array and uses those smiley faces
on the right to judge voltage and temperature. You can often go a bit
higher in the chart so save money with added risk (EMMC). I actually use
the 5 x 10 configuration above which is high stress voltage wise but my
EMMC was meant to test that (it works fine).
The program is set up for Panasonic caps but the #300 lines can be easily
changed for others cap types. It is just and old MS-DOS BASIC program so
it is simple to change.
Glad everyone likes this program so much! Even I am amazed how much it can
do for being so simple...
Cheers,
Terry