9mm potentionmeter rear bracket

Started by chromesphere, August 05, 2013, 08:23:32 PM

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chromesphere

Hey guys,
Just recieved some 9mm and they have this bracket on the back.  I've never even used a 9mm pot before.  Can you just rip it off?  Is it connected to any of the pins?   Or is it just for mounting?  To be clear here, you can see it in the photos in this listing:

http://www.ebay.com/itm/2-x-9mm-Alpha-B20K-20K-Linear-Taper-Dual-Potentiometer-D-Shaft-RT-Angle-PC-Mount-/251214704480

(scroll down the page to see the photo)

Cheers
Paul
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ch1naski

The two on the bottom?
Those are for mounting. Because the actual lug pins are sort of weak on these, where they enter the actual pot. Tend to snap there if they are handled a lot.

So you can bend  or clip the mounting lugs on the bottom.
Or drill a couple holes on the PCB for them to go into.
Mockingbird wish me luck.

CodeMonk


chromesphere

Ahh, sorry i didnt notice those 2 extra lugs there.   No i actually meant that plate on the back of the pot with the curved lugs.  (the plate with 'alpha' stamped on it)
Paul
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tubegeek

There are two sets of three lugs because the pot is a dual pot: turning the shaft operates both pots in sync. All 6 are "live" and need to be wired correctly for the pot to function as a dual pot.

The other two pins on the plate marked "Alpha" were already described correctly. You can clip the pins (but I wouldn't) but I am not sure what is behind the plate - I doubt it's there just for show, you won't want to remove it..

"The first four times, we figured it was an isolated incident." - Angry Pete

"(Chassis is not a magic garbage dump.)" - PRR

chromesphere

The photograph made it look like 2 lugs but yeah i see now, its a dual gang!

Cool thanks for hte explanation.  If they get the way, ill clip them off, otherwise ill just leave them

So how do you guys usually use 9mm pots?  PCB mount, off board wire, etc?

Paul
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Pedal Parts Shop                Youtube

CodeMonk

Quote from: chromesphere on August 05, 2013, 10:13:56 PM
The photograph made it look like 2 lugs but yeah i see now, its a dual gang!

Cool thanks for hte explanation.  If they get the way, ill clip them off, otherwise ill just leave them

So how do you guys usually use 9mm pots?  PCB mount, off board wire, etc?

Paul

PCB Mount.
These days, I PCB mount almost all my pots.
It does tend to make PCB design a bit more of a challenge though.

chromesphere

Thanks CodeMonk.  They fit my fabbed PCB's nicely!  I cant remember if i did this on purpose...anyway, all is good.  

If i snip off those extra lugs on the back of the pot, they will mount onto the back of the pcb perfectly!  

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Pedal Parts Shop                Youtube

ch1naski

I didn't realize you meant the the actual put lugs ...lol
Mockingbird wish me luck.