** Next:** Coupled (Mutual) Inductors
** Up:** Passive Element Lines
** Previous:** Capacitor Model
** Contents**
** Index**

##

Inductors

- General Form:

`l`*name* *n*+ *n*- [`ind=`]*expr*
[ic=*val*]

l*name* *n*+ *n*- `poly` *c0* [*c1* ...]
[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. 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 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.

The second form allows specification of a polynomial inductance, which
will take the form

Inductance =
*c*0 + *c*1^{ . }*i* + *c*2^{ . }*i*^{2}...

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.
The optional initial condition is the initial (time-zero) value of
inductor current (in amps) that flows from *n*`+`, through
the inductor, to *n*`-`. The initial conditions (if any)
apply only when the `uic` option is specified in transient
analysis.

** Next:** Coupled (Mutual) Inductors
** Up:** Passive Element Lines
** Previous:** Capacitor Model
** Contents**
** Index**
Stephen R. Whiteley
2017-03-28