Blackstone Appliances - MOSFET OD (2SV3.12) [ goop-alarm ]  [traced]

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dap9
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Post by dap9 »

Cool layout and build Mike! Ya know, I gotta get me some of that Vero board. Seems like a good way to do a build.

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ShortScaleMike
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Post by ShortScaleMike »

Cheers

Here is the prettified Verified Version (1.3)
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Post by ShortScaleMike »

I finished boxing this up recently with the trims as external controls, some cool sounds in this box. Will make a demo soon.

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Post by Ripdivot »

I decided to redraw Madbean's schematic just to make it easier for me to follow. No offence Madbean and great work on this one! I thought it might be helpful for some of you as well. One thing I don't recall reading in the thread was which caps are socketed for the user to swap out. They are:

C11 (10nf) is the bass limiting cap on the red drive control.
PCL (330pf) is presence cap on the third inverter stage.

I hope this is of some use to some of you...

Cheers
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Post by Ripdivot »

Sorry, here it is again with the correct date of the drawing if that matters to anyone...
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Silent Fly
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Post by Silent Fly »

Thanks Ripdivot. I find your version easier to read as well.
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Post by Silent Fly »

Reading Ripdivot's diagram there are a couple of things I noticed.

IC1b is there doing nothing. It could be used to get a more stable Vb. Probably it make no difference but Vb used by IC1a could be taken by pin 7 of the same IC. Alternatively, IC1b could be used as an output buffer.

I am sure schematics reflects what the pedal does but wouldn't it be better to connect the R4 to Vb instead of ground?
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Post by Ripdivot »

I found a wiring mistake (jumper across S1A pins 1 and 3) in the schematic I redrew as well as a typo on the 4049 labeling. I removed the jumper and fixed the IC2 labeling. Sorry about that, it should be correct now. Here it is:
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Mich P
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Post by Mich P »

Hello just finish mine today:
Mich P.
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miwanone
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Post by miwanone »

Very nice build mich! :applause: I love the way you replicated the idea of an extra metal plate just for labeling. How did you get your text on that?

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Post by Mich P »

Hi Niwanone,
It's a stainless steel plate
i used a transparent stickers and made design by
photoshop. The text are in white (so the inkjet leave it transparent)
and the background is in black.What you see is the metal on the back.
that 's make the letters very shiny. Then clearcoted few times.

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Post by miwanone »

That came out great, looks very nice. 8)

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bajaman
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Post by bajaman »

where did you get the transparent sticky from???
what brand is it etc.??
thanks
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Post by Mich P »

Hi Bajaman,
Here the link of the stickers (in french)
http://www.microapp.com/papier_transpar ... _5091.html
Mich P.

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Post by andersom »

Hello all,

Thanks for the great forum... i have question regarding the wiring..
I made a jpg with my wiring is this correct???
i finished my build but it doesn't work.

Can somebody please tell me what i'm doing wrong?

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borislavgajic
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Post by borislavgajic »

Hi...very nice builds........hmmmm ..but I have question :hmmm:

why nobody uses goop ? :lol:

boris

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Post by Mich P »

"Can somebody please tell me what i'm doing wrong?"

There is a mistake in the madbean wiring :
In the SW2 C2 and C3 should be reverse !!
Mich P.

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Post by andersom »

Thanks Mich P.

I hope that will do the trick :lol:
I'll try that tonight, was it the same problem in your build?
Again my compliments for your build.

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Post by Mich P »

Hi Andersom i see few mistakes in the wiring you have posted
the 9v clip is not correctly wired and the input and ouput jacks
seems not ok too.
Mich P.

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ShortScaleMike
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Post by ShortScaleMike »

yeah, you can't just wire to the two tips to the same lug like that. Have a look at some 3PDT schemes.

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