29+ Schematic Symbols Resistor Images. This physics video tutorial explains how to read a schematic diagram by knowing what each electric symbol represent in a typical electrical circuit. All resistors have two terminals, one connection on each end of the resistor.
All the resistors in the schematic (several sheets) have the same symbol, so i concluded that it means nothing the dot is not standard.
American national just add arrows to the ansi and iec resistor symbols. Electronics symbols for schematics and wiring diagrams are mostly universal with a few. All types of resistors have their own resistor symbols which are used when a circuit diagram is drawn. Schematic symbols for passive devices: