Basic Relay Bypass wiring
- Thread starter nickquack
- Start date
SYLV9ST9R
Well-known member
thank you!!!
Are you getting any clicking or popping when the relay is engaging or disengaging??
I purchased a bunch of these from Buggs for making an 8 channel strip true bypass looper utilizing clickless momentary trigger.
I'm getting a a "click" "click" when it is engaged or disengaged! I'm using the Latching version and hooking it up like Buggs said without the one transistor and LED hooked up to where the transistor would be.
I'm not hooking these up to one of PedalPCB pedals, but some commerical pedals.
At first I wasn't getting signal, then I figure out the IN and OUT. I figured the out of the pedal would go into the IN, but no, it's as labeled and Out of the pedal needed to go to the OUT of the circuit. I thought maybe grounding issue and messed with that, but still having issues. It isn't quiet either. Not sure what is up, but contacted Buggs twice and supplied detailed question along with video and did not get a response!!
I need this solved. Been working on this for months!! Any help would be greatly appreciated.
ref: bypass unit - https://www.pedalpcb.com/product/pcb394/
ref: chirp - https://drive.google.com/file/d/1_5WZkwMOaLkKlSksKnjR6n2gM8NfrAyV/view?usp=sharing
ref: noise - https://drive.google.com/file/d/1Glzb0FZ6kHxTSxtpiBw32yMHYiM8ONH6/view?usp=sharing
ref: grounding and hook up: https://drive.google.com/file/d/1s5WxQP6LoXhJD7vDppYt9QPzVc8M7STb/view?usp=sharing
I purchased a bunch of these from Buggs for making an 8 channel strip true bypass looper utilizing clickless momentary trigger.
I'm getting a a "click" "click" when it is engaged or disengaged! I'm using the Latching version and hooking it up like Buggs said without the one transistor and LED hooked up to where the transistor would be.
I'm not hooking these up to one of PedalPCB pedals, but some commerical pedals.
At first I wasn't getting signal, then I figure out the IN and OUT. I figured the out of the pedal would go into the IN, but no, it's as labeled and Out of the pedal needed to go to the OUT of the circuit. I thought maybe grounding issue and messed with that, but still having issues. It isn't quiet either. Not sure what is up, but contacted Buggs twice and supplied detailed question along with video and did not get a response!!
I need this solved. Been working on this for months!! Any help would be greatly appreciated.
ref: bypass unit - https://www.pedalpcb.com/product/pcb394/
ref: chirp - https://drive.google.com/file/d/1_5WZkwMOaLkKlSksKnjR6n2gM8NfrAyV/view?usp=sharing
ref: noise - https://drive.google.com/file/d/1Glzb0FZ6kHxTSxtpiBw32yMHYiM8ONH6/view?usp=sharing
ref: grounding and hook up: https://drive.google.com/file/d/1s5WxQP6LoXhJD7vDppYt9QPzVc8M7STb/view?usp=sharing
Stickman393
Well-known member
It's quite common to have a bit of a click on these relay switches...even the 3pdt stomp switches can have this issue.
I'm not fully versed on exactly the cause here...but my current understanding is that a few things can happen...any DC offset on the circuit you're switching to or from can cause a momentary pop. Maybe something like a leaking coupling capacitor could be contributing to this...though I can't say for certain.
The other possibility that these relay coils represent an instantaneous spike in current consumption: these have a good 100uF cap in them to help mitigate any voltage drop associated with that spike, but it can have implications downstream if other pedals are drawing current from the same power supply. This spike occurs whenever the relay switches positions (it uses an electromagnetic coil to do either attract or repel the shuttle that makes or breaks the contacts).
Some people use optocouplers as a momentary "mute" circuit to help alleviate this problem. The issue there is that could represent a noticeable volume drop-out when switching...it all depends on how long the "mute" circuit is active...it's an imperfect trade-off, but it can be made to be less than obvious.
I'm not fully versed on exactly the cause here...but my current understanding is that a few things can happen...any DC offset on the circuit you're switching to or from can cause a momentary pop. Maybe something like a leaking coupling capacitor could be contributing to this...though I can't say for certain.
The other possibility that these relay coils represent an instantaneous spike in current consumption: these have a good 100uF cap in them to help mitigate any voltage drop associated with that spike, but it can have implications downstream if other pedals are drawing current from the same power supply. This spike occurs whenever the relay switches positions (it uses an electromagnetic coil to do either attract or repel the shuttle that makes or breaks the contacts).
Some people use optocouplers as a momentary "mute" circuit to help alleviate this problem. The issue there is that could represent a noticeable volume drop-out when switching...it all depends on how long the "mute" circuit is active...it's an imperfect trade-off, but it can be made to be less than obvious.
