Build Your Own Clone Message Board

It is currently Mon Nov 28, 2022 8:20 am

All times are UTC - 6 hours




Post new topic Reply to topic  [ 7 posts ] 
Author Message
PostPosted: Sun Oct 02, 2022 8:15 am 
Offline

Joined: Mon Apr 27, 2020 10:33 am
Posts: 45
So, why does lug 3 get jumpered to lug 6?

In looking at various schematics, that appears to ground the whole circuit when in bypass. From what I can tell, omitting that jumper and leaving everything else as-is would still turn off the led and leave the signal passing through direct from jack-to-jack.

So there must be something I am missing/not understanding because obviously the jumper DOES something...

Thanks


Top
 Profile  
 
PostPosted: Sun Oct 02, 2022 12:37 pm 
Offline
User avatar

Joined: Sun Nov 18, 2012 5:13 pm
Posts: 4665
Location: Soddy Daisy,TN
It grounds the audio from the PCB completely. Theoretically, it keeps any artifacts from the bypassed circuit from being introduced into the clean signal. It may be snake oil, but it’s just something we’ve all done, probably for no reason.


Sent from my iPhone using Tapatalk

_________________
Pedal building is like the opposite of sex. All the fun stuff happens before you get in the box.


Top
 Profile  
 
PostPosted: Sun Oct 02, 2022 12:46 pm 
Offline
Moderator
User avatar

Joined: Tue Jan 02, 2007 1:24 pm
Posts: 15725
Location: Albany, NY
jimilee wrote:
It grounds the audio from the PCB completely.

...when the pedal is in bypass.

_________________
“My favorite programming language is SOLDER” - Bob Pease (RIP)

My Website * My Musical Gear * My DIY Pedals: Pg.1 - Pg.2


Top
 Profile  
 
PostPosted: Sun Oct 02, 2022 1:48 pm 
Offline
Moderator
User avatar

Joined: Tue Feb 09, 2010 4:45 pm
Posts: 4592
Location: Rochester, NY
If you're curious for more about this topic, you can read about mechanical bypass switching in detail in this excellent thread by Stephen.

_________________
Scott

My band, Austin Hollow


Top
 Profile  
 
PostPosted: Sun Oct 02, 2022 2:08 pm 
Offline

Joined: Mon Apr 27, 2020 10:33 am
Posts: 45
So, primarily the 3-6 jumper grounds the rest of the circuit when bypassed so that pops are less likely... does that mean it discharges capacitors or am I off base on that assumption? Sorry, just trying to completely wrap my head around that.

Thank you for the link to the more comprehensive discussion.


Top
 Profile  
 
PostPosted: Sun Oct 02, 2022 3:55 pm 
Offline
User avatar

Joined: Sun Nov 18, 2012 5:13 pm
Posts: 4665
Location: Soddy Daisy,TN
duhvoodooman wrote:
jimilee wrote:
It grounds the audio from the PCB completely.

...when the pedal is in bypass.
[THUMBS UP SIGN]


Sent from my iPhone using Tapatalk

_________________
Pedal building is like the opposite of sex. All the fun stuff happens before you get in the box.


Top
 Profile  
 
PostPosted: Mon Oct 03, 2022 11:31 am 
Offline
Site Admin
User avatar

Joined: Sun Jan 22, 2006 1:39 pm
Posts: 5762
Location: Moses Lake, WA
Unclesixer wrote:
So, primarily the 3-6 jumper grounds the rest of the circuit when bypassed so that pops are less likely... does that mean it discharges capacitors or am I off base on that assumption? Sorry, just trying to completely wrap my head around that.

Thank you for the link to the more comprehensive discussion.



No. It only grounds the circuit input. Basically, the same concept as the input to any amplifier when you don't actually have a plug inserted. All the power filter caps will still be charged.

_________________
*patience is a virtue*

Please do not PM me. email is prefered. keith@buildyourownclone.com


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 6 hours


Who is online

Users browsing this forum: No registered users and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group