%$Id: k.tex,v 25.95 2006/08/26 01:26:53 al Exp $ -*- LaTeX -*-
% man circuit k .
% Copyright (C) 2001 Albert Davis
% Author: Albert Davis <aldavis@ieee.org>
%
% This file is part of "Gnucap", the Gnu Circuit Analysis Package
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2, or (at your option)
% any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program; if not, write to the Free Software
% Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
% 02110-1301, USA.
%------------------------------------------------------------------------
\section{{\tt K}: Coupled (Mutual) Inductors}
%------------------------------------------------------------------------
\subsection{Syntax}
\begin{verse}
{\tt K}{\it xxxxxxx} {\tt L}{\it yyyyyyy} {\tt L}{\it zzzzzzz}
	{\it value}\\
{\tt .mutual\_inductor} {\it label}
	{\tt L}{\it yyyyyyy} {\tt L}{\it zzzzzzz}	{\it value}
\end{verse}
%------------------------------------------------------------------------
\subsection{Purpose}

Coupled mutual inductance.
%------------------------------------------------------------------------
\subsection{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 $K = \frac{M_{ij}}{\sqrt{L_i L_j}}$.
%------------------------------------------------------------------------
\subsection{Bugs}

This release does not support multiple coupled inductors.
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%------------------------------------------------------------------------
