Potentiometer
Adjustable resistor
Description
Equations
Variables
Connections
Parameters
Modelica Standard Library
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.
Rn=R⁢1+α⁢Thp−Tref⁢min⁡1,max⁡0,rint
Rp=R⁢1+α⁢Thp−Tref⁢1−min⁡1,max⁡0,rint
vn−vcontact=Rn⁢in
vp−vcontact=Rp⁢ip
ip+in+icontact=0
LossPower=vp−vcontact⁢ip+vn−vcontact⁢in
Thp={TheatPortUse Heat PortTotherwise
Name
Units
Modelica ID
LossPower
W
Loss power leaving component via heatPort
Thp
K
Temperature of heat port
T_heatPort
Rp
Ω
Actual resistance between pinp and contact
Rn
Actual resistance between contact and pinn
contact
Electrical connection to sliding contact
pinn
Negative electrical connection
pin_n
pinp
Positive electrical connection
pin_p
r
Conditional real input
heatPort
Conditional heat port
Default
α
0
1K
Temperature coefficient of conductance
alpha
R
1
Resistance at temperature T_ref
rconstant
0.5
Contact between n (r=0) and p (r=1)
rConstant
T
Tref
Fixed device temperature if the Use Heat Port is false
293.15
Reference temperature
T_ref
Use Heat Port
false
True (checked) enables heat port
useHeatPort
Use R input
True (checked) enables resistance input
useRinput
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
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