[sdiy] caps -- NPO or NP0?

[Theo]

A ceramic cap (NP0) of 1u may be hard to find, also tolerance might be "not
that good", like -20%/+80%.
Let just say a circuit in special need op a 1uF NP0 would be a bit curious.
OTOH 1uF polymer types like MKT, MKP are quite easy to get and usually 10%
or better tolerance.
Think you where right all along, you probably just need a "non polarized
cap".
Considering the value of 1uF, maybe the author tried to specify a
non-polarized ELCO.
Anyways, a polymer type will probably fit the bill nicely.

Theo


----- Original Message -----
From: john mahoney <jmahoney at gate.net>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, May 11, 2004 11:53 PM
Subject: [sdiy] caps -- NPO or NP0?


> (A dearth of DIY content today, folks. In an effort to post something
> topical...)
>
> I just finished ordering the parts to build my Sound Lab Mini-Synth:
>
http://www.musicfromouterspace.com/analogsynth/SOUNDLABMINISYNTH/soundlab.ht
ml
> Rude66 is starting to build one, also, so one of us should be able to
> provide a review fairly soon. Anyway...
>
> Somewhere along the way, the part specified as a 1uF NPO cap lost the
"NPO."
> That is to say that Ray Wilson changed it on the parts list. I'm not sure
> why (yeah, I could ask Ray), but no matter.
>
> Question is this: I see this written as NPO and NP0. Is it supposed to be
> the letter 'O' or the digit zero? C0G (cee zero gee) is yet another way of
> writing the same thing, apparently.
>
> And I originally thought that it just meant Non-POlarized. Oops! :-/
> --
> john <--(electronics genius -- not!)
>