Cap substitute on AC30 simulator...maybe RG

[Rafa]

Im building the Stepahn  Moeller AC30 simulator in RG PCB pdf file says that C10 ( Cout in stepahn schematic) which is a 100uf cap should be NP. I really cant find that cap, can I use a polarised one? or any other substitute?
This schematic was taken from  http://www.geocities.com/rafa23189/p47-fig6.gif

Cheers
Rafa

[Rafa]

Mhhh wrong link here is the right one:

http://www.archive.org/index.php

Here you can find the whole project including the 1 strage but without the resistor values.You must look for the old soundwesthost archieves the projhect I think is number 47

[Sir H C]

In that circuit the capacitor can see + or - voltages at the one side of the cap so it needs to be NP.  YOu can do this with two polarized capacitors but I can't find the article on how right now.

[Meanderthal]

2 100uf polarized caps paralell with opposite polarity (like clipping diodes) ought to do the trick.

[R.G.]

Two polarized 100uf caps in series, + to +.

Parallel will fail both directions.

[Meanderthal]

oops!

[rocket]

If the capacity is supposed to be 100µF the caps in series ned to be 200µf each (220 is the next available value)

[rocket]

The guy who designed it wanted to produce a commercial product - what happend to that??

[slacker]

If the capacity is supposed to be 100µF the caps in series ned to be 200µf each (220 is the next available value)

That normally applies to putting 2 equal value electro capacitors in series when you put them +-+- then the combined value is half of the 2 values.
When you put 2 equal value electros back to back -++- to make a non polar electro the value is the value of one of the capacitors so if you use 2 100uF caps the combined value is 100uF.