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home.howstuffworks.com/inside-scale.htm

We have all stood on a bathroom scale at least once or twice in our lives. In this article, we will examine how a bathroom scale works. Here is the scale we will be exploring today: When you take off the cover what you find is a large dial, a rack and pinion arrangement that turns the dial, a spring ...

www.hunker.com/12183358/how-does-a-digital-scale-work

How Does a Digital Scale Work? By Marynia Kolak. SAVE; Digital scales work with the use of a strain gauge load cell. Whereas analog scales use springs to indicate the weight of an object, digital scales convert the force of a weight to an electric signal. Its key components consist of a strain gauge, a device used to measure the strain of an ...

www.kidzsearch.com/kidztube/how-does-a-bathroom-scale-work-mr-wizard_60aef07d0...

Learn how a bathroom scale works with Mr. Wizard. Subscribe now for more science, nature and technology clips from the 1980's Nickelodeon show, Mr. Wizard's World, every week on #WizardWednesdays.

Spring scales, for example, measure weight using Hooke's law, which relates force (weight) to the stretching or compression of a spring made from a given material. Not all scales use springs, but all measure weight using mechanical components. So, mechanical and digital scales differ only in how they display weight -- mechanically or ...

electronics.stackexchange.com/.../digital-bathroom-scale-circuit-how-it-works

I'd like to understand how the digital bathroom scales work. I was able to gather that there are four three-wire load cells connected into the Wheatstone bridge as suggested below. The load cells have three wires which seem to be connected as if there were two resistors (R1A,R1B first cell; R2A,R2B second cell, etc).

www.reference.com/science/weighing-scales-work-ddb54f328780a184

How Do Weighing Scales Work? Bathroom scales utilize a series of levers to distribute weight evenly while placing tension on a spring connected to a dial. The spring is calibrated so that it elongates under force, turning the attached dial until it displays a number proportionate to the weight distributed by each lever.