Menatone Pig  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
User avatar
Zokk
Resistor Ronker
Information
Posts: 270
Joined: 05 Jul 2010, 20:00
Location: tantalum shortcut area
Has thanked: 195 times
Been thanked: 64 times

Post by Zokk »

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

Thank you very much!

User avatar
karul
Resistor Ronker
Information
Posts: 281
Joined: 02 Jan 2011, 20:28
Has thanked: 312 times
Been thanked: 166 times

Post by karul »

I have this one.
Attachments
Menatone Pig schem.png
menatonepig.pdf
(63.9 KiB) Downloaded 311 times

User avatar
danielzink
Resistor Ronker
Information
Posts: 389
Joined: 23 Feb 2008, 19:27
Completed builds: Too many: www.danielzink.com
Location: Lansing, MI
Has thanked: 9 times
Been thanked: 28 times

Post by danielzink »

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

Image
http://www.danielzink.com
MoonWatcher wrote: Silent ain't better. If someone cracks the shitwind, I want to know what's headed my way. Silence is for the library and the cemetery.

User avatar
Zokk
Resistor Ronker
Information
Posts: 270
Joined: 05 Jul 2010, 20:00
Location: tantalum shortcut area
Has thanked: 195 times
Been thanked: 64 times

Post by Zokk »

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.

User avatar
Zokk
Resistor Ronker
Information
Posts: 270
Joined: 05 Jul 2010, 20:00
Location: tantalum shortcut area
Has thanked: 195 times
Been thanked: 64 times

Post by Zokk »

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.
0001-Pig Layout NEWEST corr.png
edit: remember all the pots pin1 are connected to ground.

User avatar
danielzink
Resistor Ronker
Information
Posts: 389
Joined: 23 Feb 2008, 19:27
Completed builds: Too many: www.danielzink.com
Location: Lansing, MI
Has thanked: 9 times
Been thanked: 28 times

Post by danielzink »

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
http://www.danielzink.com
MoonWatcher wrote: Silent ain't better. If someone cracks the shitwind, I want to know what's headed my way. Silence is for the library and the cemetery.

User avatar
danielzink
Resistor Ronker
Information
Posts: 389
Joined: 23 Feb 2008, 19:27
Completed builds: Too many: www.danielzink.com
Location: Lansing, MI
Has thanked: 9 times
Been thanked: 28 times

Post by danielzink »

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

Image
http://www.danielzink.com
MoonWatcher wrote: Silent ain't better. If someone cracks the shitwind, I want to know what's headed my way. Silence is for the library and the cemetery.

User avatar
johnk
Resistor Ronker
Information
Posts: 277
Joined: 05 Apr 2010, 07:33
Has thanked: 32 times
Been thanked: 275 times

Post by johnk »

yep. I missed that cut in my layout so this one is correct:
Attachments
0001-Pig Layout NEWEST.png

User avatar
Zokk
Resistor Ronker
Information
Posts: 270
Joined: 05 Jul 2010, 20:00
Location: tantalum shortcut area
Has thanked: 195 times
Been thanked: 64 times

Post by Zokk »

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.

User avatar
danielzink
Resistor Ronker
Information
Posts: 389
Joined: 23 Feb 2008, 19:27
Completed builds: Too many: www.danielzink.com
Location: Lansing, MI
Has thanked: 9 times
Been thanked: 28 times

Post by danielzink »

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 :D

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
http://www.danielzink.com
MoonWatcher wrote: Silent ain't better. If someone cracks the shitwind, I want to know what's headed my way. Silence is for the library and the cemetery.

User avatar
Zokk
Resistor Ronker
Information
Posts: 270
Joined: 05 Jul 2010, 20:00
Location: tantalum shortcut area
Has thanked: 195 times
Been thanked: 64 times

Post by Zokk »

8) 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).

User avatar
danielzink
Resistor Ronker
Information
Posts: 389
Joined: 23 Feb 2008, 19:27
Completed builds: Too many: www.danielzink.com
Location: Lansing, MI
Has thanked: 9 times
Been thanked: 28 times

Post by danielzink »

Okay,

Final layout.

Gonna build this with the "option".

Dan

Image
http://www.danielzink.com
MoonWatcher wrote: Silent ain't better. If someone cracks the shitwind, I want to know what's headed my way. Silence is for the library and the cemetery.

User avatar
newly
Breadboard Brother
Information
Posts: 69
Joined: 31 Oct 2009, 09:55
Has thanked: 3 times
Been thanked: 2 times

Post by newly »

danielzink wrote:Okay,

Final layout.

Gonna build this with the "option".

Dan

[ Image ]
Is the build successful Dan?

User avatar
danielzink
Resistor Ronker
Information
Posts: 389
Joined: 23 Feb 2008, 19:27
Completed builds: Too many: www.danielzink.com
Location: Lansing, MI
Has thanked: 9 times
Been thanked: 28 times

Post by danielzink »

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.

:applause:
http://www.danielzink.com
MoonWatcher wrote: Silent ain't better. If someone cracks the shitwind, I want to know what's headed my way. Silence is for the library and the cemetery.

Post Reply