EEVblog 1667 - Reverse Engineering the Brymen BM2257 Multimeter LowZ Mode

Reverse Engineering the Brymen BM2257 Multimeter front end to understand what changes have been made from the BM235 in the Low Z mode. DaveCAD time. Also some testing of the LowZ mode and how it works.

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MOV datasheet: https://www.cnr.com.tw/cloudSpace/CNR...
How to reverse engineer:    • EEVblog #675 - How To Reverse Engineer A R...  
Multimeter Input Protection:    • EEVblog #373 - Multimeter Input Protection...  

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#ElectronicsCreators #multimeter #reverseengineering