pull down resistor and input grounding
Posted: 08 May 2017, 09:22
Hello,
Here is the 3PDT wiring I use for all my builds (pic from Gaussmarkov) :
I ran across a situation where I'd like to have a bicolor status LED (bypass/on).
Implementation would be easy if I could use the entire center row of the 3PDT switch.
That in turn would mean I'd need to remove the wire that enables circuit input grounding in bypass mode.
AFAIK the sole purpose of input grounding is to avoid popping when you turn the effect on and off.
And it is only effective if popping is actually due to input capacitor leakage.
Yet the 1M pulldown resistor at circuit input is used for the exact same purpose.
I guess my question is : Isn't circuit input grounding at the switch + pull down resistor overkill ?
If so, can't I just leave the pulldown resistor and have my bicolor LED wiring on the 3PDT switch ?
Here is the 3PDT wiring I use for all my builds (pic from Gaussmarkov) :
I ran across a situation where I'd like to have a bicolor status LED (bypass/on).
Implementation would be easy if I could use the entire center row of the 3PDT switch.
That in turn would mean I'd need to remove the wire that enables circuit input grounding in bypass mode.
AFAIK the sole purpose of input grounding is to avoid popping when you turn the effect on and off.
And it is only effective if popping is actually due to input capacitor leakage.
Yet the 1M pulldown resistor at circuit input is used for the exact same purpose.
I guess my question is : Isn't circuit input grounding at the switch + pull down resistor overkill ?
If so, can't I just leave the pulldown resistor and have my bicolor LED wiring on the 3PDT switch ?