WOLFRAM SYSTEM MODELER

# SlidingPotentiometerExample

Sliding potentiometer in normal configuration

# Wolfram Language

In[1]:=
`SystemModel["EducationExamples.ElectricalEngineering.Potentiometers.SlidingPotentiometerExample"]`
Out[1]:=

# Information

Potentiometers, also knows as pots, are useful electrical components that allows a person or a machine to directly tune the voltage or restiance in one part of a circuit. In its normal configuration, a potentiometer acts as a variable voltage divider. If a voltage source is connected between the two pins called terminals, the voltage over the third pin, known as the wiper will vary with the position of the potentiometer shaft. This shaft can for example be controlled by a slider or a thumbwheel.

#### Model

In this example model, a slider controlled potentiometer has been connected in its normal configuration. The translational position of the slider will be increased following a ramp signal, from 0 to 10 centimeter (about 4 inches). The voltage on the wiper pin is measured with a voltage sensor.

#### Simulation

To simulate the model, click the Simulate button:

#### Plot the results

Explore how the voltage on the wiper pin decreases as the potentiometer gets turned around. Plot the Model plot called Potentiometer voltages by double clicking it from the Model Plots section.

You should now see the graph below:

# Parameters (4)

minPos Value: 0 Type: Length (m) Description: Minimum angle for the thumbwheel. Value: 0.1 Type: Length (m) Description: Maximum angle for the thumbwheel. Value: 10 Type: Resistance (Ω) Description: Minimum resistance for the potentiometer. Value: 1000 Type: Resistance (Ω) Description: Maximum resistance for the potentiometer.

# Components (8)

potentionmeter Type: SlidingPotentiometer Description: Thumbwheel potentiometer in rheostat configuration. Type: Ground Description: Ground component. Type: ConstantVoltage Description: Constant voltage source. Type: Ramp Description: Ramp signal that sets the angle of the thumbwheel potentiometer. Type: VoltageSensor Description: Sensor to measure the voltage between two pins Type: Ground Description: Ground component. Type: Position Description: Forced movement of a flange according to a reference position Type: Limiter Description: Limit the range of a signal