NO idea what I did wrong
model JOse_stepeer
Modelica.Electrical.Analog.Semiconductors.NPN nPN annotation(Placement(visible = true, transformation(origin = {-65, -5}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
replaceable Modelica.Electrical.Analog.Interfaces.VoltageSource voltageSource(offset = 50, startTime = 10) annotation(Placement(visible = true, transformation(origin = {-82.915, 43.313}, extent = {{10, -10}, {-10, 10}}, rotation = 0)));
Modelica.Electrical.Analog.Basic.Ground ground annotation(Placement(visible = true, transformation(origin = {-21.841, -45}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Electrical.Analog.Sources.SignalVoltage signalVoltage annotation(Placement(visible = true, transformation(origin = {-100, -5}, extent = {{10, -10}, {-10, 10}}, rotation = 0)));
Modelica.Blocks.Sources.Pulse pulse(amplitude = 51, period = 1) annotation(Placement(visible = true, transformation(origin = {-110, 22.209}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_ElectricalExcited dcee(Jr = 2, wMechanical.start = 1, ia.start = 10, ie.start = 50) annotation(Placement(visible = true, transformation(origin = {60, -17.487}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Electrical.Analog.Basic.Capacitor capacitor annotation(Placement(visible = true, transformation(origin = {21.933, -20}, extent = {{-10, -10}, {10, 10}}, rotation = -90)));
equation
connect(voltageSource.p, nPN.C) annotation(Line(visible = true, origin = {-57.866, 21.657}, points = {{-15.049, 21.657}, {6.091, 21.657}, {6.091, -21.657}, {2.866, -21.657}}, color = {10, 90, 224}));
connect(nPN.E, ground.p) annotation(Line(visible = true, origin = {-32.894, -18.333}, points = {{-22.106, 8.333}, {11.053, 8.333}, {11.053, -16.667}}, color = {10, 90, 224}));
connect(voltageSource.n, nPN.E) annotation(Line(visible = true, origin = {-90.583, 3.325}, points = {{-2.332, 39.988}, {-34.417, 39.988}, {-34.417, -33.325}, {35.583, -33.325}, {35.583, -13.325}}, color = {10, 90, 224}));
connect(signalVoltage.p, nPN.B) annotation(Line(visible = true, origin = {-82.5, -5}, points = {{-7.5, -0}, {7.5, 0}}, color = {10, 90, 224}));
connect(signalVoltage.n, ground.p) annotation(Line(visible = true, origin = {-73.629, -19.667}, points = {{-36.371, 14.667}, {-45.483, 7.667}, {-45.483, -5.333}, {42.742, -5.333}, {42.742, -2.333}, {51.789, -15.333}}, color = {10, 90, 224}));
connect(pulse.y, signalVoltage.v) annotation(Line(visible = true, origin = {-98.2, 12.483}, points = {{-0.8, 9.725}, {2.2, 9.725}, {2.2, -4.483}, {-1.8, -4.483}, {-1.8, -10.483}}, color = {1, 37, 163}));
connect(ground.p, dcee.pin_an) annotation(Line(visible = true, origin = {0.543, -3.122}, points = {{-22.384, -31.878}, {-20.543, 8.122}, {20.543, 8.122}, {53.457, -4.365}}, color = {10, 90, 224}));
connect(nPN.C, dcee.pin_ap) annotation(Line(visible = true, origin = {-10.428, 7.19}, points = {{-44.572, -7.19}, {-21.23, -7.19}, {-21.23, 14.529}, {43.515, 14.529}, {76.428, -14.677}}, color = {10, 90, 224}));
connect(capacitor.n, ground.p) annotation(Line(visible = true, origin = {3.009, -32.5}, points = {{18.925, 2.5}, {18.925, -0.725}, {5.925, -0.725}, {5.925, 0.725}, {-24.849, 0.725}, {-24.849, -2.5}}, color = {10, 90, 224}));
connect(capacitor.p, dcee.pin_ep) annotation(Line(visible = true, origin = {36.283, -9.305}, points = {{-14.35, -0.695}, {-14.35, 2.53}, {7.492, 2.53}, {7.492, -2.182}, {13.717, -2.182}}, color = {10, 90, 224}));
connect(dcee.pin_en, capacitor.n) annotation(Line(visible = true, origin = {36.283, -28.685}, points = {{13.717, 5.198}, {7.492, 5.198}, {7.492, -4.54}, {-14.35, -4.54}, {-14.35, -1.315}}, color = {10, 90, 224}));
annotation(Diagram(coordinateSystem(extent = {{-148.5, -105}, {148.5, 105}}, preserveAspectRatio = true, initialScale = 0.1, grid = {5, 5})));
end JOse_stepeer;