## 3.14 `K`: Coupled (Mutual) Inductors

### 3.14.1 Syntax

`K` xxxxxxx `L` yyyyyyy `L` zzzzzzz value
`.MUTual_inductor` label `L` yyyyyyy `L` zzzzzzz value

### 3.14.2 Purpose

Coupled mutual inductance.

### 3.14.3 Comments

K couples two inductors. The value is the coefficient of coupling. Using the dot convention, place a dot on the first node of each inductor.
The coefficient of coupling is given by K = Mij/sqrt(Li Lj.

### 3.14.4 Bugs

This release does not support multiple coupled inductors.