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Is there such thing as a potentiometer that acts as a switch?
Like, a pot with multiple 'notches' and turning the pot to a specific notch (detente?) completes a circuit. Then turning it again and it completes another circuit. Does it exist? And if so, where can i get it? thanks.
Hi!
Since you don't explain the application, I don't know if you need only the switching of circuits, or if you need to switch circuits, plus changing of a resistance value, but I'm guessing you would like a rotary switch.
These come in a variety of sizes, they can have any number of contacts, (poles) voltage and current ratings.
You must determine a few things - what is the voltage and current that will be present at the switch, and how many circuits you are making/breaking at a given time.
Be aware that some switches are make before break, others break contact entirely before making a new connection.
Another thing you will find is that there are many ways that the switches are terminated..or, how you connect them to your device... options include soldering directly to a circuit board, screw-terminals for wires, and solder cups are common.
Have a look at the following catalog pages for rotary switches here:
http://dkc3.digikey.com/PDF/T082/P2032.pdf
(use next/previous links in that page to navigate)
Or... type 'rotary switch' into the search box at http://www.mcmaster.com/
This will give you words pictures and an idea of all the various options that are available to you. You can order from either of the 2 companies, or search ebay or a local electronics salvage.. I reccomend you find someone local to you that has electronics experience.
As with any electrical or electronic project, use caution, be informed and be safe!
Best regards
Nick
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