Ucinnost toroidniho trafa ?

[Naprstek, Jiri]

Zalezi na tom, jak presne potrebujete tyto udaje znat. S ohledem na to, ze pouzivate 16bit A/D, tak asi hodne presne. Pak bych rekl, ze odhadnout ucinnost trafa bude vyrazne nedostatecne a sel bych cestou mereni napeti a proudu na primaru. Na malinkem odporu v jedne vetvi primaru zmerite proud a pres cely primar napeti. Maly procesurek galvanicky oddeleny od zbytku zdroje, napajeny treba kondiko-odporovym zrojem nebo pomocnym vinutim na trafu tohle bez problemu zmeri a posle "nahoru".

Jirka N.

> -----Original Message-----
> From: hw-list-bounces@list.hw.cz [mailto:hw-list-bounces@list.hw.cz]On
> Behalf Of zoodiskus@vol.cz
> Sent: Thursday, January 26, 2006 3:51 PM
> To: hw-list@list.hw.cz
> Subject: Ucinnost toroidniho trafa ?
> 
> 
> Stavim zdroj 2 x 0-40V 0-10A  v kterem mam toroidni trafo 1000AV pak
> stepdown menic a linearni stabilizator, vystupni U,I merim pomoci 16
> bit ADC.  Ovladaci sw tak muze zobrazovat jak U,I, vykon, celovy
> dodany naboj a radu dalsich ptakovin, nicmene bych rad zobrazoval i
> prikon zdroje, ktery bych rad pocital, ale nejsem si jisty jaka je
> ucinnost toroidniho trafa, zda je v celem rozsahu zateze konstantni
> a jakou typ zateze predstavuje takove trafo pro rozvodnou sit (jake
> je cos Fi)?
> 
> Poradite.
> 
> Dekuji
> 
> 
> 
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