class ACCircuit "AC circuit"
extends Modelica.Icons.Information;
annotation (Documentation(info = "<html>\n<p>\nA simple\n<a href=\"modelica://Modelica.Electrical.QuasiStationary.SinglePhase.Examples.SeriesResonance\">\n example</a> of a series connection of a resistor, an inductor and a capacitor\nas depicted in Fig. 1 should be explained in the following. For various frequencies,\nthe voltage drops across the resistor, the inductor and the capacitor should be determined.\n</p>\n\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"2\">\n <tr>\n <td>\n <img src=\"modelica://Modelica/Resources/Images/Electrical/QuasiStationary/UsersGuide/Overview/ACCircuit/resonance_circuit.png\"\n alt=\"resonance_circuit.png\">\n </td>\n </tr>\n <caption align=\"bottom\">Fig. 1: Series AC circuit of a resistor and an inductor at variable frequency</caption>\n</table>\n\n<p>\nThe voltage drop across the resistor\n</p>\n\n<p>\n<img\n border=\"0\"\n src=\"modelica://Modelica/Resources/Images/Electrical/QuasiStationary/UsersGuide/Overview/ACCircuit/img1.png\"\n alt=\"\n\\underline{v}_{r}=R\\underline{i}\">\n</p>\n\n<p>\nand the inductor\n</p>\n\n<p>\n<img\n border=\"0\"\n src=\"modelica://Modelica/Resources/Images/Electrical/QuasiStationary/UsersGuide/Overview/ACCircuit/img2.png\"\n alt=\"\n\\underline{v}_{l}=j\\omega L\\underline{i}\">\n</p>\n\n<p>\nand the capacitor\n</p>\n\n<p>\n<img\n border=\"0\"\n src=\"modelica://Modelica/Resources/Images/Electrical/QuasiStationary/UsersGuide/Overview/ACCircuit/img3.png\"\n alt=\"\n\\underline{v}_{l}=j\\omega L\\underline{i}\">\n</p>\n\n<p>\nadd up to the total voltage\n</p>\n\n<p>\n<img\n border=\"0\"\n src=\"modelica://Modelica/Resources/Images/Electrical/QuasiStationary/UsersGuide/Overview/ACCircuit/img4.png\"\n alt=\"\n\\underline{v}=\\underline{v}_{r}+\\underline{v}_{l}\">\n</p>\n\n<p>\nas illustrated in the phasor diagram of Fig. 2.\n</p>\n\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"2\">\n <tr>\n <td>\n <img src=\"modelica://Modelica/Resources/Images/Electrical/QuasiStationary/UsersGuide/Overview/ACCircuit/phasor_diagram.png\"\n alt=\"phasor_diagram.png\">\n </td>\n </tr>\n <caption align=\"bottom\">Fig. 2: Phasor diagram of a resistor and inductance series connection</caption>\n</table>\n\n<p>Due to the series connection of the resistor, inductor and capacitor, the three currents are all equal:</p>\n\n<p>\n<img border=\"0\"\n src=\"modelica://Modelica/Resources/Images/Electrical/QuasiStationary/UsersGuide/Overview/ACCircuit/img5.png\"\n alt=\"img5.png\">\n</p>\n\n<h4>See also</h4>\n<a href=\"modelica://Modelica.Electrical.QuasiStationary.UsersGuide.Overview.Introduction\">\n Introduction</a>,\n<a href=\"modelica://Modelica.Electrical.QuasiStationary.UsersGuide.Overview.Power\">\n Power</a>,\n<a href=\"modelica://Modelica.Electrical.QuasiStationary.UsersGuide.Overview.ReferenceSystem\">\n Reference system</a>\n\n</html>"));
end ACCircuit;