Long story short, Thevenin’s theorem allows you to boil a complicated circuit down to a simple one. Short story long, see here. To be honest, this one I thought was fascinating when I was in school. I

I remember reading somewhere (I believe it was in the OpAmp Handbook, by Texas Instruments) that the OpAmp was created by someone in the telephone industry, long ago, who was trying to solve the issue

This circuit can be used to measure the current going through a load, using an analog voltage input. This is a pretty specific case, but at one point I was stuck with a full DAQ chassis and no analog current

This concept is simple but I found it difficult to wrap my head around at first, so it seemed worth writing down for my own future reference. So, at least to the best of what I’ve been able to determine,

This is another simple solution that can come in handy. A simple in-line resistor converts a voltage to a current or vice versa. Note, this was labeled wrong. The top diagram is actually voltage to current.

It doesn’t look like much, but this has to be one of my favorites. I was fairly green when I designed this circuit, so I had to take a more roundabout approach. I created a spreadsheet that would calculate

The Kelvin Double Bridge (wired as shown above) is a probe/wire configuration I like to use when taking analog measurements over a significant distance. If my probe wires are more than 3m in length, I

This book contains my hand-written notes on various electrical circuits and logic basics. I published this listing a bit too early, so I’ll have to keep updating it as I release the sections. Pages/Sections

A flyback diode is just a regular diode. It is considered a “flyback” only when applied in a specific manner. In my applications, this is generally when it is put in parallel with a motor. Because inductors