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DE SM/VFM Layout

Posted: Wed Oct 05, 2011 8:44 pm
by jfrey
Just drew these up. Look right?

Long version:

DESMVFM.jpg


Square-ish version:

DESMVFM2.jpg


The images are a bit bigger, so open them up larger if you can't read them. Also, now that I think of it, transistors can take up two column spaces not one depending on the adjacent components - whatever, doesn't change the circuit. I guess later today maybe I'll redraw them for accuracy.

Re: DE SM/VFM Layout

Posted: Thu Oct 06, 2011 2:00 pm
by jfrey
Now we play the waiting game...

Image

Re: DE SM/VFM Layout

Posted: Thu Oct 06, 2011 2:32 pm
by multi_s
do you have the original schematic? i drew teh result of teh top board so you can compare what i got from your layout and the origianl

i will scan it in a minit,...

Re: DE SM/VFM Layout

Posted: Thu Oct 06, 2011 2:33 pm
by jfrey

Re: DE SM/VFM Layout

Posted: Thu Oct 06, 2011 3:02 pm
by multi_s
here is what i get from the top layout working backwards

Image

it looks the same only you are missing the pots and the 1k below the signal in pot.

That resistor doesn't seem to do much though other than limit the range of the input pot such that you cant turn the volume all the way down to zero.

Re: DE SM/VFM Layout

Posted: Thu Oct 06, 2011 3:06 pm
by jfrey
Yeah, the stuff left out I meant to leave out. I just drew up the board.

I was pretty sure it was right, I just wanted to double check. I have this issue - same thing happens when I'm programming - where I'll do the work, everything is perfect and I'm confident in it 100%. Then I look at it the next day and I don't even understand how it works. I might as well have created it in a dream because it doesn't make sense to me anymore.