Potentiometer - MapleSim Help
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Potentiometer

Adjustable resistor

 

Description

Equations

Variables

Connections

Parameters

Modelica Standard Library

Description

The Potentiometer component models a potentiometer with the sliding contact placed between pinn (r=0) and pinp (r=1), dependent on either the parameter rconstant or the signal input r. The total resistance R is temperature dependent.

Equations

Rn=R1+αThpTrefmin1,max0,rint

Rp=R1+αThpTref1min1,max0,rint

vnvcontact=Rnin

vpvcontact=Rpip

ip+in+icontact=0

LossPower=vpvcontactip+vnvcontactin

Thp={TheatPortUse Heat PortTotherwise

Variables

Name

Units

Description

Modelica ID

LossPower

W

Loss power leaving component via heatPort

LossPower

Thp

K

Temperature of heat port

T_heatPort

Rp

Ω

Actual resistance between pinp and contact

Rp

Rn

Ω

Actual resistance between contact and pinn

Rn

Connections

Name

Description

Modelica ID

contact

Electrical connection to sliding contact

contact

pinn

Negative electrical connection

pin_n

pinp

Positive electrical connection

pin_p

r

Conditional real input

r

heatPort

Conditional heat port

heatPort

Parameters

Name

Default

Units

Description

Modelica ID

α

0

1K

Temperature coefficient of conductance

alpha

R

1

Ω

Resistance at temperature T_ref

R

rconstant

0.5

1

Contact between n (r=0) and p (r=1)

rConstant

T

Tref

K

Fixed device temperature if the Use Heat Port is false

T

Tref

293.15

K

Reference temperature

T_ref

Use Heat Port

false

 

True (checked) enables heat port

useHeatPort

Use R input

false

 

True (checked) enables resistance input

useRinput

Modelica Standard Library

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

Analog Components

Electrical Library

Resistors