Lowering DC voltage without using a voltage divider

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INORAN

Joined Jan 31, 2016
1
Hey guys! I have project where I have to measure voltage from a 40VDC (max) source using an acquisition device that has an input limit of 5V. So far, the only viable solution I've come up with is the attached image, a voltage divider and a buffer for isolation. But I want to know if there's any other solution that I can build (so, no DC-to-DC converters).

Thank you in advance


PS: I know this is a good and easy solution, but I'd like to know the alternatives, if there's any. It's just me being stubborn for the sake of learning
 

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crutschow

Joined Mar 14, 2008
23,776
That's the simplest solution
You could use a switched capacitor circuit to do the same thing but that's much more complicated.
 
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