Hi, my project will use lithium coin battery as backup and I want to measure it's voltage. Problem is the operating voltage when powered from main source will be less than 3V. I plan to use a voltage divider to measure the coin cell and measure it up to once a day to check if it is still OK. Three …

30 MOhm voltage divider - is it OK?

Wawa November 27, 2017, 7:26pm 8

Did you read this.
Leo..

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