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. Forum: https://www.eevblog.com/forum/blog/ee... 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...   Web Site: http://www.eevblog.com Hardware Store: https://eevblog.store/ Merch Store: https://www.teepublic.com/stores/eevb... If you find my videos useful you may consider supporting the EEVblog on Patreon:   / eevblog   Or with crypto: BTC: 33BsprBQNBtHuVzVwDmqWkpDjYnCouwASM ETH: 0x68114e40ff4dcdd384750500501e20acf3875f8c BCH: 35n9KBPw9T7M3NGzpS3t4nUYEf9HbRmkm4 USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c LTC: MJfK57ujxy55su4XicVGQc9wcEJf6mAoXF Other channels: EEVblog2:    / eevblog2   EEVdiscover:    / eevdiscover   #ElectronicsCreators #multimeter #reverseengineering