Thread: Xiaomi launches the InkPalm 5 mini e-reader for 599 yuan (~$91)
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Old 12-16-2024, 12:33 PM   #238
Renate
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Quote:
Originally Posted by Quoth View Post
A reverse biased LED does work as a very poor photo transistor.
Yeah, I was trying that, couldn't get it to work. TL082 and 470k feedback, 12V supply.
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