How smoke detectors work
1 year ago
7
Bill Hammack
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240816 Like and subscribe. This is an archive, check the link in the end if you are. Bill takes apart a smoke detector and shows how it uses a radioactive source to generate a tiny current which is disrupted when smoke flows through the sensor. He describes how a special transistor called a MOSFET can be used to detect the tiny current changes.
https://rumblevideoarchive.wordpress.com/
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