New circuit: Hiawatha (And I can't get it to work...)

Started by syndromet, June 15, 2006, 05:04:16 PM

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syndromet

Quote from: RaceDriver205 on July 04, 2006, 04:57:53 AM
QuoteWhat is it?
Lol, many many things.
If you want to know more - http://www.diystompboxes.com/smfforum/index.php?topic=44752.0
That is insane..... Have you finnished it yet?
My diy-site: www.syndromet.com

RaceDriver205

Hell no!
That pictures just the ones that are completed and working. (including these http://www.geocities.com/race_driver205/effects3.jpg too)
They amount to about 50% of the total work.
The switching system (towards the bottom of that thread) is requiring a lot of developing and research, in order to maximise the efficiency of the design. Estimated completion time (which got extended because of all the new stuff ive added to "the list") can only be approximated to before the end of this year.

syndromet

#22
*EDIT* I found out I had all the transistors the wrong way. Haven't tried it since changing them. New voltage readings showing voltages with transistors the way they should be.*EDIT*


I tried this today, using my vero-layout, an d it didn't work (suprise, suprise!). Probing it gave no sound at all, even at the tip of the in-plug, when it was also connected to In on the circuit.

I don't know anything about what kind of voltages I should suspect to see when measuring JFEet circuits. I post the voltages, so that anyone who understands this might have a clue of what is wrong.

I've triple-checked everything (found the PS filter cap put in the wrong way..), and cut between the traces so many times the board soon falls apart.

I also connected the wires going to the Presence-controll yesterday, and popped a few Fets before I understood what was wrong...

Layout
Schematic

Voltages:
Q1 = mpf102
s - 7,51
d - 0,50
g - 0,00

q2=mpf102
s - 7,50
d - 0,31
g - 0,00

q3=j201
s - 6,85
d - 1,02
g - 0,00

q4=j201
s - 7,46
d - 0,76
g - 0,00

Battery=7,94v (guess I could need some new batteries....)

Any help or hints would be truly appreciated.
My diy-site: www.syndromet.com

chokeyou

well if theres no signal at the input, take it as a sign your soldering on the jack has failed or your cable has...thats all assuming you actually have a signal in the first place (I normally loop a bit of guitar and start probing)