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There are a lot of weird amplifiers: Old welding transformers are controlled by a magnetic shunt- field lines are directed through a movable shunt instead of t

There are a lot of weird amplifiers: Old welding transformers are controlled by a magnetic shunt- field lines are directed through a movable shunt instead of the secondary. https://www.youtube.com/watch?v=k5684mQJQRU https://www.youtube.com/watch?v=k5684mQJQRU There are magnetic core logic circuits, see: https://www.youtube.com/watch?v=p7SkE5pERtA https://www.youtube.com/watch?v=p7SkE5pERtA You can make very loud record players using compressed air: http://www.douglas-self.com/MUSEUM/COMMS/auxetophone/auxetoph.htm http://www.douglas-self.com/MUSEUM/COMMS/auxetophone/auxetop... You can make audio amplifiers using friction: http://www.douglas-self.com/MUSEUM/COMMS/trumechamp/trumechamp.htm http://www.douglas-self.com/MUSEUM/COMMS/trumechamp/trumecha... Friction can be electrically controlled: https://www.gettyimages.com/detail/news-photo/this-wall-telephone-uses-the-chalk-receiver-invented-by-news-photo/90773875 https://www.gettyimages.com/detail/news-photo/this-wall-tele... You know that magnetic tape hiss? That makes a great radio detector: https://www.youtube.com/watch?v=4CAxWoKD-fw https://www.youtube.com/watch?v=4CAxWoKD-fw

Aloha 6y ago
I absolutely love glasslinger's videos, thay're quite a gifted engineer.
raverbashing 6y ago
Amazing, and a bit quaint. Of course, there's a reason why most of these aren't used anymore and even valves are used in very specific applications (or let's say, not all of them exactly for pure engineering reasons) Semiconductors blow all of these out of the water. And as technology for higher power/higher frequency gets better they will be replaced more and more by semiconductors.
moron4hire 6y ago
You can use a flame as a triode to build an amp https://www.youtube.com/watch?v=-aAwyUoawkc https://www.youtube.com/watch?v=-aAwyUoawkc Tangentially, you can use a flame to emit sound directly http://onetuberadio.com/2018/07/02/flame-speaker-science-fair-project/ http://onetuberadio.com/2018/07/02/flame-speaker-science-fai...

Aloha 6y ago

I absolutely love glasslinger's videos, thay're quite a gifted engineer.

raverbashing 6y ago

Amazing, and a bit quaint. Of course, there's a reason why most of these aren't used anymore and even valves are used in very specific applications (or let's say, not all of them exactly for pure engineering reasons) Semiconductors blow all of these out of the water. And as technology for higher power/higher frequency gets better they will be replaced more and more by semiconductors.

moron4hire 6y ago

You can use a flame as a triode to build an amp https://www.youtube.com/watch?v=-aAwyUoawkc https://www.youtube.com/watch?v=-aAwyUoawkc Tangentially, you can use a flame to emit sound directly http://onetuberadio.com/2018/07/02/flame-speaker-science-fair-project/ http://onetuberadio.com/2018/07/02/flame-speaker-science-fai...