Circuits, Formulas and Tables Electrical Engineering  Basic Vocational Knowledge 
1. Selected Graphical Symbols of Electrotechnology 
Term 
Graphical Symbol  

in full 
simplified 
resistor, general 
 
resistor, variable, with possible circuit interruption 
 
resistor, variable, without circuit interruption 
 
resistor as voltage divider 
 
resistor, adjustable 


resistor, infinitely variable resistor, voltagedependent nonlinear 


fusible cutout, general 
 
potential fuse, general 
 
twoelectrode arrester 
 
ion arrester (dot = gas filing) 
 