☑ Digital Variable Resistor Circuit

Either mechanically potentiometer rheostat or electronically digital potentiometer. We will connect this digital pot ic to the arduino microcontroller.

Potentiometer Definition Types And Working Principle

Digital Potentiometer Or Digipot Applications And Uses

How Does A Digital Potentiometer Work Electrical

The circuit is having 10 different resistance stages that can be selected by pressing the push switch s1 each time the switch s1 is pressed the circuit will select the next resistor value from r6 r8 r10 r12 r14 r16 r18 r20 r22 r24.

Digital variable resistor circuit. These resistors are called digital potentiometers. Potentiometer or pots are three terminal devices used to vary the resistance in a circuit. It functions as a potential divider and is used to generate a voltage signal depending on the position of the potentiometer.

Types of variable resistors potentiometer. The potentiometer is the most common variable resistor. Properties of digital potentiometers digital potentiometers are integrated circuit ics some variants have a nonvolatile memory eeprom which remembers the wiper position.

Here is a circuit from the lm13700 data sheet that may work. It has a control voltage that sets the resistance value i would use a digital potentiometer to set the control voltage. You will have to check the circuit to determine if the resistance range can be set low enough.

Digital potentiomter working internal structure applications one of the most common types of variable resistors is the potentiometer. The figure shows a useful project of digital variable resistor circuit the circuit is very versatile and can be replaced with any analog variable resistor. A resistor of which the ohmic resistance value can be adjusted.

The specific digital potentiometer we will use in this circuit is the mcp4131 ic. The mcp line of potentiometers come in 5kw 10kw 50kw and 100kw meaning you can purchase the ic in any of these maximum resistance values. A digital potentiometer is a variable resistor which is controlled by digital signals instead of by mechanical movement.