Memorandum of my Hobbies, DIY, plastic models, and huge photo storage from various museums

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FET

Tr Tester Duoyi DY294 repaired

This page shows how I could fix broken DY294 by reverse polarity power supply. It works for over-voltage damage, too.

2023.06.10

DIY

DIY Tr/FET Tester completed

According to the cirduit design finished in below link, I have just finished assembly of Transistor/FET tester (hFE measurement device). It can fix the Emitter current (Source curr…（Read more）

2022.04.18

DIY

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