[sdiy] Newbie capacitor questions 2 - Return of the Cap.

[Mikael Mørup]

Citat Paul Perry <pfperry at melbpc.org.au>:

>
> ----- Original Message -----
> From: "Mikael Mørup" > Am i correct inassuming that a capacitor named
> Styroflex is the same as a
> > polystyrene capacitor? Its a smalish grey cylindirc thing, and kind of old
> > fashioned looking with axial leads, and comes in values from 47 pF to
> 10nF.
> >
> Googling around, it looks like Styroflex is the BASF company's name for
> polystyrene.
>
> But.. why not use ceramic NPO caps? they are actually guaranteed to have low
> temp
> coefficient (that is what the NPO means) plus, they are cheap & available.
>
> paul perry Melbourne Australia
>
Thanks for your suggestion.

That was what i actually did, but i thought that NP0 caps. only come in very
small values ? The ones i can get locally goes up to around 800pF max.

Also :

I live in a very small, very expencive contry (Denmark) even here in Copenhagen
we only have 3 shops selling components, and 2 of them are just branches of the
same company. So the selection i have to choose from is limited. I did just
discover a copule of web based danish shops with more to choose from, including
LM13700 CA3080 and Styroflex caps :-). Bying from England seems to be the next
logical step, but many english or US based shops have rather large minimum
order amounts for overseas orders + shipping + i might end up paying VAT on top
of that.

And :

I still have so mouch to learn. Thats where you guys come in :-)

Lastly :

I found a website that explains that my assumption is correct. Styroflex seems
to be a the name Siemens (and others) used for polystyrene capacitors over
here.

http://my.execpc.com/~endlr/film.html

Very good capacitor guide / site.

Thanks again

Mikael