[vampalan]

I've got a bunch of square capacitors, except I've not got a clue how to read them and diging on the google didnt come up with much.

Something like:
222J100 or 223J100 etc...
Is there some knowledge that I didnt find somewhere out there on the internet?

 

[Nemo de Monet]

If they're like the ERO caps I've got in front of me, J = tolerance (+/-5%, see here, 100 would be the voltage rating (100VDC), and 223 the capacitance - in this case, .022uf, per this handy table.

 

[AudioCats]

pictures, maybe?

 

[vampalan]

Here's the pictures then.

 

[FallenAngel]

Look at the capacitor codes that Nemo de Monet linked to for farad value, the number after the J is the voltage rating.

So, the green film caps you have there are (left to right):
0.001uF / 100V
0.01uF / 100V
0.022uF / 100V
0.047uF / 100V
0.47uF / 63V

 

[vampalan]

Thanks that sort of makes more sense with the links.

 

[tangent]

The one on the left is probably some type of ceramic, and the green ones are metallized polyester. Ceramics are good for bypassing and other general-purpose cap needs, but not good for audio paths or critical filters. Metallized polyester is a little better, but I'd still only use it in the audio path when space is at an absolute premium.

 

[vampalan]

So what's a good type of cap to use that's even better... I know.. I'll RTFM... it's all new to me. I've built my first one about 3 years ago, but it was very dodgy, actually the design was some web page I dont have any more. I'll post a picture of it on another thread to see if anyone knows that layout.
More recently I've built a kit supplied by zigis, very nice PCB lay out expect I need to do some resoldering and the copper came off, my fault. The sound is very good too.