Re: Javatc update to version 10.j

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Esondrmn@xxxxxxx 

Bart.

A typo I suspect.  Centigrade to Fahrenheit should be:
To convert from Centigrade to Fahrenheit:  (centigrade/(9/5)+32)

9/5 as opposed to 5/9.

Ed Sonderman


In a message dated 12/4/2005 5:57:43 PM Pacific Standard Time, 
tesla@xxxxxxxxxx writes:
Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi All,

I updated Javatc with a minor update (just a clean-up item)

http://www.classictesla.com/java/javatc.html

At the top of the form there is a new input box for Ambient
Temperature and drop down for Centigrade or Fahrenheit. The default
is 68 Fahrenheit (20 Centigrade). This effects only the DC Resistance value.

The download version is also upgraded and available at the web site.

For those who are interested, the equation for DC resistance with
ambient temp considerations:

DCR = ((4 x (wire length) x 6.787 x 1e-7) / ((wire diameter)^2 x PI))
x (1 + (C-20) x 0.0039)
where
  DCR = DC Resistance in ohms
  wire length & wire diameter = inches
  C = degrees Centigrade
  PI = 3.14159....

Temp Unit conversion:

To convert from Fahrenheit to Centigrade:  (fahrenheit-32)*(5/9)
To convert from Centigrade to Fahrenheit:  (centigrade/(5/9)+32)

Overall, a very minor change. Maybe a couple ohms + or -. It was
partially written in the code already, I just decided to keep it and
finish up the implementation.

Take care,
Bart