Variable Resistor Rotary Type Schematic Symbol. Potentiometers are basically just adjustable voltage dividers. R1 is the resistor closest to the input voltage r 2 is the resistor closest to ground v in is the input voltage and v out is the output voltage.
The following symbol is used for a potentiometer. R1 is the resistor closest to the input voltage r 2 is the resistor closest to ground v in is the input voltage and v out is the output voltage. In pre set controls available only from within the equipment for use by technicians a t shaped line touching or crossing the fixed resistor is used as shown in fig.
Potentiometers are basically just adjustable voltage dividers.
Such type of variable resistor has a continuous resistance i e. The schematic symbols used for potentiometers are similar to those used for fixed resistors except that they have an arrow to indicate the slider in potentiometers or variable resistors that are accessible to the user. You will better understand this if we take a look at the construction of a typical potentiometer. The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric.
