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ELFORUM - Forumul electronistilor

Formule calcul


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Buna ziua

 

Doresc sa fac un program ce inglobeaza toate ce necesare pt executarea unei lampi cu leduri.

Am facut pana acuma doar partea de calcul a rezistentei pt curent continu, dar mai as dori un convertor de:

 

1. Convertor Candela/Lumen (cd/lm) si invers.

Am dat pe ceva formule si comparat cu Zexstar ii ok, doar ca nu am mai mult de 45grade :(

http://led.linear1.org/how-do-i-convert ... nd-lumens/

 

2. Convertor Candela/Lux (cd/lux) si invers.

 

3. Convertor Lumen/Lux (lm/lux) si invers.

 

4. Calculul rezistentei pt curent alternativ.

 

Exemplu: http://www.zexstar.com/shop_content.php?coID=19

 

Poate cineva sa-mi dea formulele de calcul.

 

Multumesc anticipat.

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