Variable Resistor Circuit Diagram. Resistor values in ohms are usually shown as an adjacent number and if several resistors are present in a circuit they will be labeled with a unique identifier number such as r 1 r 2 r 3 etc. They are popular for having the non linear v i characteristics curve.
Potentiometer Circuit Circuit Diagram Circuit Electronics Basics from in.pinterest.com
When all the three terminals are used in a circuit and the output voltage is taken from the moving terminal the variable resistor is known as a potentiometer. The middle pin and one of the side pins. The above image shows a simple circuit to dim an led.
The middle pin and one of the side pins.
Digital variable resistor circuit diagram. The values of resistor r6 r8 r10 r12 r14 r16 r18 r20 r22 r24 can be changed to any required values or variable resistors can also be used in the place of these resistors to get exact required values. Resistor schematic symbols and values. It looks like a voltage divider circuit as shown below.
