How to Connect a Potentiometer in a Circuit



Wire a Potentiometer As a Variable Resistor

You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Discussion in ' General Electronics Chat ' started by HaruMay 14, Log in or Sign up. Electronics Forum Circuits, Projects and Microcontrollers. Welcome to our site! Electro Tech is an online community with overmembers who enjoy talking hook up variable resistor and building electronic circuits, projects and gadgets.

To participate you need to register. Click here to register now. How do you connect a variable resistor? Mar 25, Messages: It has 3 pins, I only want to use 2 pins. HaruMay 14, Nov 17, Messages: PIC programmer software, and PIC Tutorials at: Nigel GoodwinMay 14, Aug your connection to matchmaking is not reliable, Messages: I might know better.

Jan 12, Messages: DaveDec 11, Mar 28, Messages: Why do you care? The best low-priced hook up variable resistor to troubleshoot with are the speaker and the LED: Oct 27, Messages: I often see it connected in that way you described on schematics, but Resistot usually just use the 2 pins, unless its a level reslstor on something, where one end goes to ground, the other to the signal source and the centre taps off at any point between thats how I like to look at it.

Has anyone actually managed to break a pot like this, through excessive abuse? Hooo in a DJ mixer it could happen, hook up variable resistor even that seems unlikely. EMMay 15, Mar 16, Messages: EM, Pots frequently get dirty or wear out. If you don't connect the unused pin to the slider it will go open-circuit and the circuit won't work anymore. Ifyou connect the unused pin to the slider, it won't affect normal operation in any way but if the slider loses contact it will go to max resistance and probably still work but at a higher or lower level or frequency.

Jan 25, Messages: Hook up variable resistor, Tie up the third pin is actually recommended by the trimmer manufacturer. Apart from the reasons that Hook up variable resistor and others had said, connecting the third pin would effectively put the wiper contact resistance in parallel with the unused portion of the trimmer thus helps to lower the contact resistance and improves circuit reliability even when your trimmer is new.

EM, Apart from the reasons that Audioguru and others had said, connecting the third pin would effectively put the wiper contact resistance in parallel with the unused portion of the trimmer thus helps to lower the contact resistance and improves circuit reliability even when your trimmer is new. Nigel GoodwinMay 15, The 'improvement' is going to be Fariable negligible, and won't resustor the slightest bit of difference. This 'may' be an reeistor Commercially you see both methods used, presumably based on what they want to happen?.

I don't know about the circuits you normally use but I do care about such improvement, especially when they are recommended by trimmer manufacturers and does not cost me an extra penny. Nigel GoodwinMay 16, I really see no improvement in the figures you mentioned, can YOU adjust a preset to resistir. Failing so it's just out of adjustment could cause damage, as the fault could then continue for extended periods. I've never said not to do it, only to be aware of the reasons for doing so, and not just doing so for no good reason.

It is interesting that Bourns actually admits that their products are failing. Something like the disclaimer from semiconductor manufacturers on their datasheets: When our product fails and kills someone or causes an expensive disaster, you can't sue us! I have no idea whether it is typical or not because in real life the difference depends on the current through the trimmer. I hate wiper contact resistance gets in the hook up variable resistor of my gain network and using the third pin at least helps in reducing the effect.

That's my reason and you are free to form your judgement about it. It seems any more justification on whether using the unused pin would brings benefits is not fruitful so this would be the best time for me to stop. For that matter you have won the argument. You must log in or sign up to reply here. Share This Page Tweet. Your name or email address: Do you already have variabble account?

No, create an account now. Yes, my password is: Forums Forums Quick Links. Search titles only Posted by Member: Separate names with a comma. Search hook up variable resistor thread only Search this forum only Display results as threads. Style Full Width Contact Us Help Home Top RSS. Terms and Rules Privacy Policy.


How A Potentiometer Works & Options for Wiring