AC Formulas in reference

Discussion in 'Feedback and Suggestions' started by thatoneguy, Mar 25, 2009.

  1. thatoneguy

    Thread Starter AAC Fanatic!

    Feb 19, 2009
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    The question comes up from time to time, thought it'd be nice to have a quick link:

    http://www.allaboutcircuits.com/vol_5/chpt_1/8.html

    voltage @ angle, single phase sinewave

    V=V_{\small PK\sim}*sin(\Theta)

    angle @ voltage, single phase sinewave:
    \Theta=arcsin(\frac{V}{V_{PK\sim}})

    one or all forms (might wanna make sure these are right... :p)
    C=I(\frac{\partial T}{\partial V})

    C=(\frac{V_{PK\sim}}{\omega \cdot V_{ripple}})R_{\small Load}

    C=(\frac{V_{PK\sim}}{2 \cdot \pi \cdot f \cdot V_{ripple}})R_{\small  Load}

    Possibly add for sinewaves

    V__{\small PK\sim}=V_{\small RMS}\sqrt{2}

    Under Digital reference, a quick lookup table of 54/74xx, 40/45xx logic, at least number -> description, preferably pinout, though those would be a nightmare, I could help if you have a standard format for IC layout. ++SuperNifty Points for adding gates inside pinout for the simpler IC's, as is done in Newnes Electronics Engineer's Pocketbook.

    Finally, In Digital Reference or uC, I'll post some code for PWM routines in C.

    On that note, can the C / Assembly code colorizer module for vB be added?
     
  2. Dave

    Retired Moderator

    Nov 17, 2003
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    thatoneguy,

    Thanks for the suggestions for additions to these reference pages. I haven't had chance to check the equations above, but there is certainly scope to add some of these to the relevant page(s).

    The Reference section has always been very much a work-in-progress. Such additions would require us to have a look at the scope of the reference section; naturally creating a Kempe's-esque section for electronics requires much work but may be a desirable goal.

    Post up here and we can have a look at it.

    Is there a module you have in mind?

    Dave
     
  3. thatoneguy

    Thread Starter AAC Fanatic!

    Feb 19, 2009
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  4. Dave

    Retired Moderator

    Nov 17, 2003
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    Thanks. I'll let Rob have a look at how feasible it would be implement such a feature. It does look like a diverse feature. Are you aware of it being used on other forums?

    I can't see anything over at vB.org that would be suitable.

    Dave
     
  5. thatoneguy

    Thread Starter AAC Fanatic!

    Feb 19, 2009
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    It is used on several, including vb.org, but I believe that is with the apache config, rather than a PHP module, I've found quite a few for Win32, none for linux. Not much experience with light, so I'm not sure if it is an option or not. Simply coloring/formatting it as PHP provides acceptable results.
     
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