Ohm’s Law


The idea for AddOhms #8 has been around for quite some time.  I’m always trying to find ways to explain why current limiting resistors are necessary.  So while working in the shop one day, I decided to play with some LEDs and a bench-power supply.  Then I decided to record what happens.

Documentation, Documentation.  Documentation.

It is always critical to document progress is a log book.  If using an electronic tool like Evernote or a Blog, it can be difficult to document equations or calculations you’ve made in a project.

Vision Objects has put together a demo tool that allows for writing your equation in freehand which then uses image recognition to covert into LaTeX code.

For convenience, there is a direct link to WolframAlpha to calculate the equation.  A preview of the LaTeX Equation is provided by the open-source MathJax javascript rendering engine.

Web Equation.