Menatone Pig

Zokk · Post by **Zokk** » 14 Mar 2016, 23:24

Hi
Please could someone re-post a schematic for this one?
I can't find it anymore...

Thank you very much!

karul · Post by **karul** » 18 Mar 2016, 12:19

I have this one.

danielzink · Post by **danielzink** » 20 Apr 2016, 13:33

I have a question regarding this layout.

Looking at the 22n cap that I have arrowed...and its corresponding trace...the trace just continues right under it and doesn't connect it to anything ?

It really looks to me that the cap isn't doing anything ?

Can someone clarify ?

Thanks !!

Dan

Zokk · Post by **Zokk** » 20 Apr 2016, 15:06

You're right, it's a mistake:
this capacitor C15 is between the pin2 of the Gain pot and the Gate of Q5.
The trace should be cut under the cap.

Zokk · Post by **Zokk** » 20 Apr 2016, 18:45

OK I've corrected the pcb by JohnK, however I can't edit the parts layout with transparency etc... I hope it's clear enough.
I've build two of them without noticing this mistake, but I've soldered C15 correctly according to the schematics so everything was fine.
It's a good thing to always have the schematic besides the pcb layout when you're working on it.

edit: remember all the pots pin1 are connected to ground.

danielzink · Post by **danielzink** » 21 Apr 2016, 13:39

Yeah. I couldn't get the pcb to size up properly to print and I didn't like how it touched up after I eliminated the jumpers...

So I decided to "re" lay it out in DIYLC and that's when I noticed it.

Dan

danielzink · Post by **danielzink** » 23 Apr 2016, 15:33

Okay.

I re-did this and I added onboard 18V.

Anyone care to look it over and let me know if I'm making any grievous mistakes.

This is my first real shot at adding something like onboard voltage conversion...

Thanks !

Dan

johnk · Post by **johnk** » 24 Apr 2016, 02:53

yep. I missed that cut in my layout so this one is correct:

Zokk · Post by **Zokk** » 25 Apr 2016, 11:08

danielzink wrote:Okay.

I re-did this and I added onboard 18V.

Anyone care to look it over and let me know if I'm making any grievous mistakes.

This is my first real shot at adding something like onboard voltage conversion...

Thanks !

Dan

Are you sure you need this charge pump?
I've tried to run this circuit at different voltages, and it's perfect at +9VDC, +12VDC, and +18VDC. But I prefer its behaviour with 9V, less gain makes the volume pot more usable without overclipping my already dirty amp's input.

danielzink · Post by **danielzink** » 25 Apr 2016, 13:51

Zokk wrote:
danielzink wrote:Okay.

I re-did this and I added onboard 18V.

Anyone care to look it over and let me know if I'm making any grievous mistakes.

This is my first real shot at adding something like onboard voltage conversion...

Thanks !

Dan
Are you sure you need this charge pump?
I've tried to run this circuit at different voltages, and it's perfect at +9VDC, +12VDC, and +18VDC. But I prefer its behaviour with 9V, less gain makes the volume pot more usable without overclipping my already dirty amp's input.

Ha !

No....I'm not sure

I just saw the +18v in and thought maybe this would be easier.

If it runs well on +9v then I'm in ! I'll leave the layout there in case someone does want to build it that way - but hey - I'm happy with 9v.

Dan

Zokk · Post by **Zokk** » 25 Apr 2016, 15:27

Maybe someone has the same experience to share about the voltage of this circuit?
At leat to me 9V is ok with all my amps (from the cleaner to the dirtier).

danielzink · Post by **danielzink** » 26 Apr 2016, 12:40

Okay,

Final layout.

Gonna build this with the "option".

Dan

newly · Post by **newly** » 09 Apr 2017, 17:18

danielzink wrote:Okay,

Final layout.

Gonna build this with the "option".

Dan

[ Image ]

Is the build successful Dan?

danielzink · Post by **danielzink** » 12 Apr 2017, 17:22

newly wrote:
danielzink wrote:Okay,

Final layout.

Gonna build this with the "option".

Dan

[ Image ]
Is the build successful Dan?

110%

Couldn't be any happier.

Menatone Pig [traced]