cap question

tomg vco at mindspring.com
Wed Dec 30 02:24:36 CET 1998


On 28-Dec-98, Reverend bluE wrote:

>okay, I finally found a VCO design that I like (read:  I can find the parts
>for it.)

>It is the Maxx2 Master VCO  (VCO-4B)
>http://www.mindspring.com/~vco/maxx2/page_007.html

>the only problem that I have is the word "POLY" printed in red on the
>schematics under the 2N4392 trans.  It would appear that this word refers to
>the Cap that it is printed by.  "POLY .002"  

>does this mean I need a Polyester Cap?  I find them, but the tolerance is
>poor (+-20%)  the other Polys I find are the Metalized Polypropylene Film
>ones, but these are physically big (32mm), and it would be the most expensive
>part of the circuit (just about)...

>beyond that, I can't find a .002uf CAP anywhere.  it jumps from 1 to 2.2uf.
>So what is the deal here?  

>I guess I have two questions.  The one about the word "POLY" and one about
>.002uf CAPs.  yeah.  I think that's all.

>thanks for your time.
>-ben


Any good .002 even a ceramic will work. A ployester film 
type will offer better stability and a +-5% tolerance. Temp
stability of +5% to -2% change @ 85'C / 0% to -5% at
40'C.

sub-mini and cheep! 

Mouser # 140-PM2A202K $.12 each.

-tg









More information about the Synth-diy mailing list