[Test-Equipment] Dummy load . repost

J. Forster jfor at quik.com
Mon Feb 7 02:10:20 EST 2005


I answered in HTML and the server hashed it up..  hence the repost:

J. Forster wrote:

> Brian Clarke wrote:
>
> > There are two problems, John. Firstly, 'mineral oil' is defined differently in
> > different countries.Secondly, 'USP' has three meanings in my dictionary of
> > acronyms, none ofwhich has any bearing on laxatives or pharmacopoeia.

>  USP = United States Pharmacopia

> > Please bear in mind that  this list is worldwide and that your favorite
> > acronym is capable of multiplemisinterpretations.

> See here for alternate names:
>
>  http://householdproducts.nlm.nih.gov/cgi-bin/household/brands?tbl=chem&id=126

> > A laxative is likely to form compounds with carborundum that wouldn'tenhance
> > heat transmission properties. And it's unlikely to have a prescribeddielectric
> > coefficient - whereas, transformer oil does.

>  It is chemically pure (ie made by fractional distillation) mineral oil. I very
>  much doubt that the dielectric constant of transformer oil is controlled, since
> it
>  is essentially a non-issue at 50 or  60 Hz where most oil filled transformers
>  are used.

> >Let's not confuse cheap with effective, eh?

> You are way off-base, and your comment is completely unfounded. It is a
>  reccomended substitute for transformer oil by Heath among others. See:
>
>  http://lists.contesting.com/archives/html/TenTec/1999-01/msg00234.html
>
>  -John





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