Taking things apart to see how they work is the most fun that we get to do. Here's what a Bourns 3296 Potentiometer looks from Inside. You can easily make out how the multiturn feature works - there is a screw and cog arrangement. The cog carries the brush which moves the electrical position of the center tap along the circular cermet track (black coloured). Cermet is a ceramic/metal mixture. Do checkout Wikipedia's entry on Potentiometers.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgB6H8scH4_z_Rh-CrnNTvH8ZRnShcuT_dXfDelLj9_vASrXuHwPcM21tkf7zj8UMcz4UJ1PlsZl32vWTIzc09P1WjynmPhai1iphK3OuTN_XwpHKDQjZe_aVcyRGHstUVbm1lDdZIAZWQ/s400/Inside+a+Multiturn+Potentiometer+01.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjpVVC_U48drpGyG_1aYXdRq5xZxAqsz3Y1hQu48B-c4nuebN-uLuOvH_heIOw1urkf5HGiLaQ1ZQBYTF9lEPvUpiZFnRKXp1RLQBOlyEEN1311yx4LSDNoZLHwE9U9SNnZcmP-8LI4AzI/s400/Inside+a+Multiturn+Potentiometer+02.jpg)
Lots of components:
ReplyDeletehttp://www.et06.dk/component_store/
A membrane potentiometer can also be used to control the potential difference, or voltage, across a circuit.
ReplyDeleteGood figure and explanation, Thank you.
ReplyDelete