azlbooks Tag Posts Index

AZL Book: Electrical Math - Thevenin Equivalent Circuits

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

AZL Book: Electrical Math - OpAmp Functionality

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

AZL Book: Electrical Math - Measuring Current with Analog Voltage Input

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

AZL Book: Electrical Math - Poles & Throws

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

AZL Book: Electrical Math - Analog Signal Conversion

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

AZL Book: Electrical Math - Wide Range Digital Input

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.

AZL Book: Electrical Math - Kelvin Double Bridge

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

AZL Book: Electrical Math

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

AZL Book: Electrical Math - Flyback Diode

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