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Inductors

General Form:
lname n+ n- [value | modname] [options] [ind=expr | poly c0 [c1 ...]]

Options: [m=mult] [ic=val]

Examples:
llink 42 69 1uh
lshunt 23 51 10u ic=15.7ma

The n+ and n- are the positive and negative element nodes, respectively, and value is the inductance, for a constant value inductor. An inductor model modname can optionally be specified. Presently the inductor model holds only a parallel multiplier default, so an inductance must be specified in addition to the model.

The parameters accepted for the inductor device are:

m=mult
This is the parallel multiplier which is the number of devices effectively in parallel. The given inductance is divided by this value. It overrides any `m' multiplier found in the inductor model.

ic=val
The initial condition is the initial (time-zero) value of inductor current (in Amps) that flows from n+, through the inductor, to n-. The initial condition (if any) applies only when the uic option is specified in transient analysis.

ind=expr
The expr is an expression yielding the inductance in henries. This is the partial derivative of flux with respect to branch current, possibly as a function of other circuit variables. The keyword can alse be given as ``inductance'' or ``l'', or may be omitted since this is the default parameter. Note that the expression can depend on the branch current, in which case the device is nonlinear.

poly c0 [c1 ...]
This form allows specification of a polynomial inductance, which will take the form
Inductance = c0 + c1 . i + c2 . i2...
where i is the current flowing through the device from the positive to the negative element nodes. There is no built-in limit to the number of terms.


next up previous contents index
Next: Inductor Model Up: Passive Element Lines Previous: Capacitor Model   Contents   Index
Stephen R. Whiteley 2018-07-21