public void When_NoiseRerun_Expect_Same()
{
// Create the circuit
var ckt = new Circuit(
new VoltageSource("V1", "in", "0", 10.0),
new Resistor("R1", "in", "out", 10),
new Capacitor("C1", "out", "0", 20)
);
// Create the transient analysis
var noise = new Noise("noise 1", "V1", "out", new DecadeSweep(1, 1e9, 10));
var export = new OutputNoiseDensityExport(noise);
// Run the simulation a first time for building the reference values
var r = new List <double>();
void BuildReference(object sender, ExportDataEventArgs args) => r.Add(export.Value);
noise.ExportSimulationData += BuildReference;
noise.Run(ckt);
noise.ExportSimulationData -= BuildReference;
// Rerun the simulation for building the reference values
var index = 0;
void CheckReference(object sender, ExportDataEventArgs args)
{
Assert.AreEqual(r[index++], export.Value, 1e-20);
}
noise.ExportSimulationData += CheckReference;
noise.Rerun();
noise.ExportSimulationData -= CheckReference;
}
public void When_ResistorNoise_Expect_Reference()
{
var ckt = new Circuit(
new CurrentSource("I1", "in", "0", 1).SetParameter("acmag", 1.0),
new Resistor("R1", "in", "0", 1e3).SetParameter("temp", 20.0));
var temp = 20 + Constants.CelsiusKelvin;
var noise = new SpiceSharp.Simulations.Noise("noise", "in", new DecadeSweep(10, 10e9, 10));
var onoise = new OutputNoiseDensityExport(noise);
var inoise = new InputNoiseDensityExport(noise);
noise.ExportSimulationData += (sender, args) =>
{
// We expect 4*k*T*R noise variance
Assert.AreEqual(4 * Constants.Boltzmann * temp * 1e3, onoise.Value, 1e-20);
Assert.AreEqual(4 * Constants.Boltzmann * temp / 1e3, inoise.Value, 1e-20);
};
noise.Run(ckt);
}
