Actions
Forum Thread Details
  • Replies 1 reply
  • Subscribers 108 subscribers
  • Views 310 views
  • Users 0 members are here
Related

Vishay P16S pot - great idea but can't make sense of the datasheet

ChrisDancer

I've used the Vishay P16 series "knobpots" before, they are great where you want to mount a control knob but you have very limited space, or if you don't want to mess about fitting a pot and finding a suitable knob. Anyway, they have now brought out one with a switch, the P16S. Example: P16SNP473MAB15, Farnell part 2360075.

Great, really useful, but can anyone figure out how it works? The thing only has 3 pins. That's 3 for the pot and... where's the switch? The datasheet does not explain it at all.

 

Parents


  • Hi Chris,

    It looks like the resistance of the pot between terminals a and b varies between zero ohms and the value of the pot. If the pot is turned to it's full counter clockwise position past the detent then the resistance between terminal a and terminal b goes to infinity. While not like a conventional switch this condition is very readable with a microprocessor and can be used to put the unit into a low power mode.

    John

Reply


  • Hi Chris,

    It looks like the resistance of the pot between terminals a and b varies between zero ohms and the value of the pot. If the pot is turned to it's full counter clockwise position past the detent then the resistance between terminal a and terminal b goes to infinity. While not like a conventional switch this condition is very readable with a microprocessor and can be used to put the unit into a low power mode.

    John

Children
No Data