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Thanks Al!

24.183.101.156

madisonears

In Reply to: RE: Sad to see sloppy expression of the formula. posted by Al Sekela on December 19, 2008 at 13:32:25

Maybe budm slept through that part of math class.

Follow Ups:

Djk and I must be wrong then on the 0.159? - budm 16:18:18 12/19/08 (3)
Look here for some sample: http://megavoltz.net/capacitive_reactance.aspx
If you still do not get it where the 0.159 comes from.
- Pi is 3.141592... I'm sure you can divide by 2, to get 1/2 Pi. :-)) nt - andyr 23:10:55 12/19/08 (2)
  .
  - 0.15915494309189533576888376337251 is correct - djk 00:22:38 12/20/08 (1)
    Since no one gets it, I will explain it slowly.
    Take 2*P1, =, then hit the 1/x key, then hit M+
    This stores 0.15915494309189533576888376337251 in the memory.
    Hit clear.
    Hit MR
    Hit /
    Enter a cap value in �F.
    Hit /
    Enter the frequency in Khz.
    Hit =
    The answer is in Kilohms.
    Start out with a reasonable cap value that you can actually buy, you can always get a 1% resistor value you need.
    Example:
    .159/.1�F/.1Khz=15.9K
    By using Kkz and Kilohms and �F, you can use a simple four-funtion calculator and don't need exponential notation (or having to enter a whole bunch of zeros).
    
    Edits: 12/21/08
    - Thanks Djk! - budm 14:49:28 12/21/08 (0)
      Thank djk, one thing that get me is the so called 'new math' system they are using in the US to solve algebra equation. I am still having the hard time with English words when it comes to math on how to explain how I get the answer.

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