Quick Pulldown Resistor Question

[Ofek Deitch]

Hi guys

I have a popping pedal, so I connected a 1M pulldown resistor between lug 2 and 4 onto the 3PDT switch (from ground to effect's in), though the popping is still there.

I read at GEO that the resistor must be on board. why is that? will it solve my problem?

From GEO:

> Be sure that you have the "pull-down" resistors connected from the input/output capacitors to ground **on the effect board**

Thanks!
Ofek

[bluebunny]

will it solve my problem?

Yes it will.  The pop comes from the input coupling capacitor that lives **on your effect board**.  It sits there charged up (from when you used it last) until you stomp, then discharges very quickly.  POP!  The resistor allows it to discharge quietly to ground while you're not using the circuit.

Do what R.G. tells you.   

[Ofek Deitch]

Moved it on board - still pops a bit.
Same as on the switch, as far as I can tell..

[induction]

Assuming that your ground lug is always attached to ground and not switched (you didn't include a diagram, so I don't know what kind of switch wiring you used), then putting the pulldown on the circuit input lug of the switch is the same as putting it on the board. R.G.'s advice is for people who are tempted to put the pulldown resistor on the input jack (or on the input jack lug of the switch), where it would be disconnected during bypass so it wouldn't bleed DC off of the input cap.

Your pop must be coming from somewhere else.

[elflicho87]

Hi guys,

may I ask who is right here?
I did this 3PDT bypass layout a while ago (but never used yet), then I noticed this thread, so I'm not sure about it any more...



Thanks

[nocentelli]

That looks fine: the pull down only has to be "on the board" in the sense that it should be connected only to the input of the circuit, and not permanently wired to the guitar input at the switch.

[elflicho87]

Ok, that's the way I understood R.G. advice, just wanted to be sure.
thank you, nocentelli.

[DIMstompboxes]

Hi guys,

may I ask who is right here?
I did this 3PDT bypass layout a while ago (but never used yet), then I noticed this thread, so I'm not sure about it any more...



Thanks

I'm not sure, yes its fine though the pulldown resistor concept should be always "work bleeding the cap" at the circuit board when bypassed isn't it,  compare to just when it is bypassed that's the difference. This might have constant variance in time but let's see what R.G. would say.