Description
I found this vintage battery tester while recently doing some clean-up work and I am interested in understanding how it works, especially how the LEDs light up depending on the battery voltage. So, join me during those incredible investigations as I look inside this old device and maybe learn something! At this point, I should point out that I am not an electronic expert. It is just that my mind has been triggered by this 40 years old piece of technology and I need answers. But will I get some?
► DISCLAIMER
Always make sure you operate in a safe and secure manner.
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