AndrewCE Posted June 26, 2009 Report Posted June 26, 2009 It seems that a pot configured as a simple variable resistor would be configured: one lead at the end of the resistance track, and the other on the wiper (opposite end of the wiper left open) . But I have seen in many schematics that the 3rd prong of the pot is to be connected to the wiper. Does this matter? theoretically the resistance is the same between the two configs at all parts of the rotation. Does this reduce scratchiness or something? Quote
KeithHowell Posted June 26, 2009 Report Posted June 26, 2009 If the wiper to track goes open circuit the resistance will go to infinity (theoretically) This could be a bad thing depending on circuit design. For example in radio type circuits you now have an antennae waiting to pick up noise. If the one end is connected the highest possible value will be whatever the track is and no (or minimal) possibility of an open circuit. Keith Quote
AndrewCE Posted June 26, 2009 Author Report Posted June 26, 2009 If the wiper to track goes open circuit the resistance will go to infinity (theoretically) This could be a bad thing depending on circuit design. For example in radio type circuits you now have an antennae waiting to pick up noise. If the one end is connected the highest possible value will be whatever the track is and no (or minimal) possibility of an open circuit. Keith oh that makes sense. thanks, keith. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.