3 channel mixer layout

[cgreenCRNA]

Hello all,

I plan to build the 3 channel mixer. There are no build docs, but there is a parts list. My issue is that I am not experienced enough to know which capacitors are electrolytic or film from that list. Is it possible to either get that list a little more granular or a pic of the actual printed board of the values of the components are on it?

Thanks,
Chris

 

[Fama]

I found the schematics here: https://forum.pedalpcb.com/threads/photo-of-back-of-3-channel-mixer-splitter-pcb.25452/#post-324084

You can see which ones are which from the symbols, they're different.

As a rule of thumb, all of the uF values are electrolytics, except 1uF can be either one. From the board you can see big rectangle blocks which are usually 1uF film caps, but for the mixer it seems they're 22nF. For the splitter they are 1uF film caps.

Tl;dr: 10uF and 100uF electrolytics, 22nF film caps, 100p is not available as much else than ceramic discs I don't think?

 

[cgreenCRNA]

Thanks for the tips, but that schematic is for a splitter, not a mixer. Do you think the same rules apply?

 

[giovanni]

If you already bought the PCB, you can easily tell from the component outlines printed on it: circular caps are electrolytic, the rest are mostly box caps and the lowest valued ones (in the 10s-100s of pF) are ceramic.

 

[giovanni]

Also https://docs.pedalpcb.com/project/Schematic-3ChannelMixer.png

 

[cgreenCRNA]

I haven’t bought it yet. Trying to order all the stuff at once. I appreciate the help! Was that link accessible to be public at large?

 

[giovanni]

I haven’t bought it yet. Trying to order all the stuff at once. I appreciate the help! Was that link accessible to be public at large?

Robert had shared it in another thread I stumbled upon.

 

[Fama]

Thanks for the tips, but that schematic is for a splitter, not a mixer. Do you think the same rules apply?

It was both schematics, actually. Literally the same link giovanni posted.

 

[cgreenCRNA]

You’re right. My apologies.