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STICKY
Megathread: Random observations about electronic devices
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page 5
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The nerdy guts of lasers
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page 5
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![Working on an HP DVM, this thing has had a lot of repairs in it's life. [4032x3024 - 927KB]](https://poal.co/static/images/V3Pvnn.jpg){kind=link}
![Flight qualified sealed relays [4032x3024 - 2.05MB]](https://poal.co/static/images/WzKjRa.jpg){kind=link}
![as promised, a doodle from the supernote [1404x1872 - 73KB]](https://poal.co/static/images/61P7Tw.png){kind=link}
![20th century amplification [400x288 - 16KB]](https://poal.co/static/images/H7wfyS.jpg){kind=link}
![Running the house on battery [450x948 - 49KB]](https://poal.co/static/images/OwLs0W.png){kind=link}