We can see how circuits work, and represent them with some simple diagrams, using basic electrical components like these. You start with a cell, or combination of cells. These could be batteries ...

A circuit diagram shows how the components are connected. The following symbols show the different components that can be found in an electrical circuit. Diodes close diodeAn electrical device ...

but want to know more about how to read schematic diagrams and then use them to track down the source of the problem in an HVAC/R system that’s down." According to Johnson, "Using Schematics To ...