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Транзистор 331
LM331 Converter: Pinout, Datasheet And Circuit [Video&FAQ], 42% OFF
![LM331 Converter: Pinout, Datasheet And Circuit [Video&FAQ], 42% OFF](https://circuitdigest.com/sites/default/files/inlineimages/u1/Internal-Circuit-of-IC-KA331.jpg)