Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

bi-directional potentiometer

bi-directional potentiometer

bi-directional potentiometer

Hi, I'm looking for an alternative brand for this type of potentiometer.
using it for a joystick project. It should be able to work for +/- directions.

currently using Contelec (PL310 model) brand but curious if anyone have any idea on other brand which I can't find in google.
or is there any other name for it?



RE: bi-directional potentiometer

It is quite common for potentiometers to have both ends of the resistor brought out.
Use a pair of suitable resistors to form a 50% voltage divider. Take your reference voltage from the 50% point and from the potentiometer wiper.
Properly done, the circuit will nul with the potentiometer wiper at 50% and give an increasing signal with the polarity determined by the direction of movement.

Ohm's law
Not just a good idea;
It's the LAW!

RE: bi-directional potentiometer

thank you for all replies. I also found the other name for the potentiometer. it is called centre tap potentiometer.


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close