Pull down resistor wiring alternative?

Started by jpm83, January 04, 2008, 04:06:24 PM

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jpm83

Would this work OK for pull down resistor in Axis Wah that I'm making.


Janne

Papa_lazerous


jpm83

Thanks. I have to try that when the rest of the parts arrive.

Janne

Papa_lazerous

Why not just put the pull down on the circuit board? remember you only have a pulldown on the FX in there, depending on the effect you may well want a pull down ont eh FX out too.  this will get you out of trouble if you have already fitted everyting into an enclosure already.  But its far better to put it on the board.  even if its a bought board without pulldown on it you can easily add it yourself quite nicely

cloudscapes

I like to put pulldown resistors as physically close as possible to the in/out caps for some reason. dunno if that makes a difference
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mac

When I wired my first effect, a D+, I forgot the pull down resistor. I placed it at the input jack and worked fine, but it is not the best option because it is always connected.

mac
mac@mac-pc:~$ sudo apt install ECC83 EL84

Papa_lazerous

Quote from: mac on January 04, 2008, 08:13:43 PM
When I wired my first effect, a D+, I forgot the pull down resistor. I placed it at the input jack and worked fine, but it is not the best option because it is always connected.

mac

lol I did that too!  I soon learned it wasnt all that smart especially if I did it on every pedal in the loop so I fixed it

PerroGrande

I must confess that I will occasionally forget to include a pull-down resistor....    :icon_redface:

This usually happens to me when I'm developing a circuit and I make a "quick and dirty" PCB for it -- usually forgetting any number of "finishing touches" that I should be putting on the board.   Occasionally, though, these things will sound good enough to warrant further testing and maybe even an enclosure... Sometimes I'll just make another board for it (hopefully corrected!), but usually I rig something (time for true confessions) which can range from a resistor on the switching circuit like you did, to a resistor soldered to the underside of the board, to an SMT resistor soldered onto the copper side.

petemoore

#8
  This method used for boxes which were used to swap circuits in/out of.
  For that I 'V'd two 1 megs, and made a triangle between input/output lugs of BPSwitch, and ground...
In*--------1meg
                       >------Gnd
Out*-------1meg
  [*=Switchlug]
  connecting R's to a new fresh switch is neat and easy to do 'solder-quick' style after the leads are bent into the switch lug-holes just right.
   I prefer connect the signal wires to the resistor leads coming off the switch after that..easier to keep the switch neat and not so hot when resoldering while swapping circuits.
Convention creates following, following creates convention.

yeeshkul

Quote from: Papa_lazerous on January 05, 2008, 11:56:47 AM
Quote from: mac on January 04, 2008, 08:13:43 PM
When I wired my first effect, a D+, I forgot the pull down resistor. I placed it at the input jack and worked fine, but it is not the best option because it is always connected.

mac

lol I did that too!  I soon learned it wasnt all that smart especially if I did it on every pedal in the loop so I fixed it

hahaha, and so did i  ;D

mac

QuoteI must confess that I will occasionally forget to include a pull-down resistor....   

And I forgot the output pulldown resistor in my rangemaster...  ::)

mac
mac@mac-pc:~$ sudo apt install ECC83 EL84