Wiring a 10k fader pot?

Thread Starter

dfro

Joined Feb 6, 2006
37
I have a simple question. I would like to design a pcb using the following 10k fader pot:

http://search.digikey.com/scripts/D...ink=hp_go_button&KeyWords=PP1045SB-ND&x=0&y=0

The pot wiper has two pins, 2 and 2', which are on opposite ends of the part. Should I short them together with a pcb trace, or should I just connect to pin 2?

Would shorting them together on the pcb eventually guard against scratchy-ness as the pot wears?

Thanks,
Dave
 

Thread Starter

dfro

Joined Feb 6, 2006
37
Thanks #12,

I will wire to a single pin.

It seems that the 2' pin is provided for convenience. A pcb designer can use either 2 or 2', whichever one allows the pcb artwork to be the cleanest.

Dave
 

bertus

Joined Apr 5, 2008
22,270
Hello,

Dual pots have two sets of connections:
1 , 2 and 3 is one side (left),
1' , 2' and 3' are the other side (right).
The connections of the sides can not be mixed.

Bertus
 

Thread Starter

dfro

Joined Feb 6, 2006
37
bertus,

This particular fader pot is not a dual pot. It has a pin 1, pin 2, pin 2', pin 3, four dummy pins that are connected to nothing, and two pins in the middle that are part of the case (I will be attaching these to ground to get some shielding).

An ohm meter shows that 2 and 2' are part of the same 0 ohm strip that is inside the pot.

Dave
 
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