Variable Resistor with Constant Inductor
Purpose
Controlled resistance in series with constant inductance
Library
Electrical / Passive Components
Description
This component models a variable resistor with a constant inductor connected in
series. The resistance is determined by the signal fed into the input of the
component.
Note In this component the resistor is implemented as a current-dependent voltage
source. Without the series inductor, which fixes the momentary current, this would
result in an algebraic loop. Therefore, the inductance may not be set to
zero.
Parameters
-
Inductance
- The inductance in henries (H). All finite positive and negative values
are accepted, excluding 0. The default is 1e-3.
In a vectorized component, all internal inductors have the same inductance
if the parameter is a scalar. To specify the inductances individually use a
vector
. The length
of the vector determines the width of the
component.
-
Initial current
- The initial current through the component at simulation start, in
amperes (A). This parameter may either be a scalar or a vector corresponding
to the width of the component. The direction of a positive initial current is
indicated by a small arrow in the component symbol. The default of the initial
current is 0.
Probe Signals
-
Inductor current
- The current flowing through the inductor, in amperes (A). The
direction of a positive current is indicated with a small arrow in the component
symbol.