Circuit Diagram Variable Resistor Potentiometer Wiring. The voltage supply is connected across terminals 1 and 3 positive lead to terminal one while negative lead to terminal three. When the user turns the shaft it.
Instructions for potentiometer wiring. In the circuit diagram shown below the terminals of the potentiometer are marked 1 2 and 3. However by only connecting two pins one outside pin and one center pin of a potentiometer to your circuit you can turn a pot into a variable resistor.
Normally potentiometers are wired as variable voltage dividers.
The extra resistor is there to make sure you don t destroy the led even if you change the potentiometer resistance to. If you need a simple resistor that you can change the resistance of you only need two pins. The voltage supply is connected across terminals 1 and 3 positive lead to terminal one while negative lead to terminal three. The extra resistor is there to make sure you don t destroy the led even if you change the potentiometer resistance to.
