Damn FuzzFace tonepad... confusing me and whatnot. Help needed urgently!

Started by radioheadftw, June 16, 2008, 08:29:41 PM

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radioheadftw

I need to finish my tonepad fuzz build by tomorrow, but I have left 2 things until the end:

Why are both leads of the battery snap connected to the board?
Can I just connect the negative to the board, and the positive to the input jack? (its positive ground, since its a PNP circuit)
How do I connect the ground between input/output jacks via my Hammond aluminum chassis?

Thanks a ton!

petemoore

I need to finish my tonepad fuzz build by tomorrow,
  'or' [that's the circuit talking...]
but I have left 2 things until the end:
  "We'll see" [another typical comment a circuit never says out loud].

Why are both leads of the battery snap connected to the board?
Because there is continuity between the leads.
Can I just connect the negative to the board, and the positive to the input jack? (its positive ground, since its a PNP circuit)
  Can I just connect the negative to the board
  If the connection is shown on the schematic I would recommend it, but I would make sure the negative whatever is connected to the board in the right place, which depends on what the negative actually is.
  Sometimes power problems are solved by taking back a few steps, such as with a PNP FF, Pos Gnd.:
  Connect 9v across the PS points on the circuit, + of battery connects to ground reference, - of battery connects to V+ [where the 33k and the 1k or so resistor meet above Q1] sorry if the reference is hard to understand, we're not working with a schematic...hint...get a schematic first helps.
How do I connect the ground between input/output jacks via my Hammond aluminum chassis?
  Without being picky...any way you can or want to...some people run a wire in case the jack loosens [other reasons...main thing is that your DMM, in beep mode, one lead to ground, the other lead to all points marked ground...beeps, and ground is isolated to only those points.
  If you're using metal jacks and box, tight jacks should read ground on their sleeves.
  Input power switch jack trick...for another post...search etc.
  From what I gather you've got V+/- connected...first order of business before applying power is to make sure this condition is not. To do that you must find the connection that shouldn't be.
  You might want to pull everything except put a battery clip on Gnd. and V-, to power the PNP board..see if that works, then when adding other wires, test for non-continuity between Gnd. and V- under all conditions [jack in, jack out...I didnt' read about a DC jack.
Convention creates following, following creates convention.

radioheadftw

Thanks a lot for the fast reply!
Sadly, I'm not very electronics savvy and had some difficulty understanding what you were saying, so I'll use a picture to express my theory (lol);
this is how tonepad demonstrates it (or atleast, what I perceive)

this is how I want it, so the circuit is complete by inserting a mono plug:


What I want to know is, can it be done?


Derringer

I believe that your pos battery lead would connect to the ring of your input and then your (input jack) sleeve would connect to the GND location on the board.


radioheadftw

I'm thinking they just put both leads connecting to the board on the schematic to show where to connect which one with which grounding.
I don't want both leads connected to the board, that would just suck power up even when I wasn't using my pedal.

petemoore

I don't want both leads connected to the board, that would just suck power up even when I wasn't using my pedal. 
  Sometimes the easiest way [when all else fails] to find an unwanted 'mystery' connection is by disconnecting it.
  Starting at 'point A' [nothing or 1 bit, whatever causes non-shorting condition...[checking], then add point B, [test for shorts] add additional possibilities but test and check each one as you go...
Convention creates following, following creates convention.