# Polarity detector

Electrostatic polarity detector using two MOSFETs. Idea similar to the one in the video:

https://www.youtube.com/watch?v=H7SIozi5Ab0&t=0s The differences are that It uses two AA batteries and a double LED. The electrostatic generator is Belli's machine. By Dr. Antônio Carlos M. de Queiroz.

http://www.coe.ufrj.br/~acmq/

- Kind: Short
- Year: 2014
- Runtime: 13 min
- By: DrAntonioCarlosMdeQueiroz
- Archive: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Polarity_detector.webm)
- Licence or status: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0) (as the archive states it)
- Credit: DrAntonioCarlosMdeQueiroz
- Who can watch: Teens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/commons/105140376?play=1)