how does electronic weighing scales work?

Question

I mean in manual weighing scales you put actual weights to compare and contrast the weighted object but what happens in electric? Does it measure the force acted upon the surface when the object is put down? How does that work?

Thank you for any answers, sorry for the stupid question, legit curious 🙂

In: Engineering

Answer 1

Yes. Electric scales use a type of force sensor called a “strain gauge”. The strain gauge’s voltage changes with different amounts of weight applied to it. Then some electronics calculate the amount of weight from the amount of voltage and show it to you on the display.