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Analog.Basic.Tests.VariableCapacitor.md

Analog.Basic.Tests.VariableCapacitor ​

Test circuit for VariableCapacitor.

A sine voltage source (1 V, 1 Hz) drives an RC circuit where the capacitance ramps from 1e-3 F to 6e-3 F over 2 s. A 10 Ω series resistor provides the current path.

The charge-based formulation should produce smooth current despite the time-varying capacitance.

Usage ​

ElectricalComponents.Analog.Basic.Tests.VariableCapacitor()

Behavior ​

Source ​

dyad
"""
Test circuit for VariableCapacitor.

A sine voltage source (1 V, 1 Hz) drives an RC circuit where the
capacitance ramps from 1e-3 F to 6e-3 F over 2 s. A 10 Ω series
resistor provides the current path.

The charge-based formulation should produce smooth current despite
the time-varying capacitance.
"""
test component VariableCapacitor
  "Sine signal source: 1 V amplitude, 1 Hz"
  sine = BlockComponents.Sources.Sine(amplitude = 1, frequency = 1) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 420, "y1": 170, "x2": 320, "y2": 270, "rot": 0}
      },
      "tags": []
    }
  }
  "Voltage source driven by the sine signal"
  vs = ElectricalComponents.Analog.Sources.VoltageSource() {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 320, "y1": 310, "x2": 220, "y2": 410, "rot": 0}
      },
      "tags": []
    }
  }
  "Series resistor (10 Ω)"
  R1 = ElectricalComponents.Analog.Basic.Resistor(R = 10) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 450, "y1": 310, "x2": 550, "y2": 410, "rot": 0}
      },
      "tags": []
    }
  }
  "Variable capacitor under test"
  vc = ElectricalComponents.Analog.Basic.VariableCapacitor() {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 690, "y1": 310, "x2": 790, "y2": 410, "rot": 0}
      },
      "tags": []
    }
  }
  "Ramp for capacitance: 1e-3 F to 6e-3 F over 2 s"
  ramp = BlockComponents.Sources.Ramp(height = 5e-3, offset = 1e-3, duration = 2) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 530, "y1": 170, "x2": 630, "y2": 270, "rot": 0}
      },
      "tags": []
    }
  }
  "Ground reference"
  ground = ElectricalComponents.Analog.Basic.Ground() {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 450, "y1": 500, "x2": 550, "y2": 600, "rot": 0}
      },
      "tags": []
    }
  }
relations
  initial vc.v = 0
  connect(sine.y, vs.V) {
    "Dyad": {
      "edges": [{"S": 1, "M": [{"x": 270, "y": 220}], "E": 2}],
      "renderStyle": "standard"
    }
  }
  connect(vs.p, R1.p) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "renderStyle": "standard"}}
  connect(R1.n, vc.p) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "renderStyle": "standard"}}
  connect(vc.n, ground.g) {
    "Dyad": {
      "edges": [
        {
          "S": 1,
          "M": [{"x": 870, "y": 360}, {"x": 870, "y": 450}, {"x": 500, "y": 450}],
          "E": 2
        }
      ],
      "renderStyle": "standard"
    }
  }
  connect(vs.n, ground.g) {
    "Dyad": {
      "edges": [
        {
          "S": 1,
          "M": [{"x": 120, "y": 360}, {"x": 120, "y": 450}, {"x": 500, "y": 450}],
          "E": 2
        }
      ],
      "renderStyle": "standard"
    }
  }
  connect(ramp.y, vc.C) {
    "Dyad": {
      "edges": [{"S": 1, "M": [{"x": 740, "y": 220}], "E": 2}],
      "renderStyle": "standard"
    }
  }
metadata {
  "Dyad": {
    "tests": {"case1": {"stop": 1, "expect": {"signals": ["vc.v", "vc.i", "vc.Q"]}}}
  }
}
end
Flattened Source
dyad
"""
Test circuit for VariableCapacitor.

A sine voltage source (1 V, 1 Hz) drives an RC circuit where the
capacitance ramps from 1e-3 F to 6e-3 F over 2 s. A 10 Ω series
resistor provides the current path.

The charge-based formulation should produce smooth current despite
the time-varying capacitance.
"""
test component VariableCapacitor
  "Sine signal source: 1 V amplitude, 1 Hz"
  sine = BlockComponents.Sources.Sine(amplitude = 1, frequency = 1) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 420, "y1": 170, "x2": 320, "y2": 270, "rot": 0}
      },
      "tags": []
    }
  }
  "Voltage source driven by the sine signal"
  vs = ElectricalComponents.Analog.Sources.VoltageSource() {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 320, "y1": 310, "x2": 220, "y2": 410, "rot": 0}
      },
      "tags": []
    }
  }
  "Series resistor (10 Ω)"
  R1 = ElectricalComponents.Analog.Basic.Resistor(R = 10) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 450, "y1": 310, "x2": 550, "y2": 410, "rot": 0}
      },
      "tags": []
    }
  }
  "Variable capacitor under test"
  vc = ElectricalComponents.Analog.Basic.VariableCapacitor() {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 690, "y1": 310, "x2": 790, "y2": 410, "rot": 0}
      },
      "tags": []
    }
  }
  "Ramp for capacitance: 1e-3 F to 6e-3 F over 2 s"
  ramp = BlockComponents.Sources.Ramp(height = 5e-3, offset = 1e-3, duration = 2) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 530, "y1": 170, "x2": 630, "y2": 270, "rot": 0}
      },
      "tags": []
    }
  }
  "Ground reference"
  ground = ElectricalComponents.Analog.Basic.Ground() {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 450, "y1": 500, "x2": 550, "y2": 600, "rot": 0}
      },
      "tags": []
    }
  }
relations
  initial vc.v = 0
  connect(sine.y, vs.V) {
    "Dyad": {
      "edges": [{"S": 1, "M": [{"x": 270, "y": 220}], "E": 2}],
      "renderStyle": "standard"
    }
  }
  connect(vs.p, R1.p) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "renderStyle": "standard"}}
  connect(R1.n, vc.p) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "renderStyle": "standard"}}
  connect(vc.n, ground.g) {
    "Dyad": {
      "edges": [
        {
          "S": 1,
          "M": [{"x": 870, "y": 360}, {"x": 870, "y": 450}, {"x": 500, "y": 450}],
          "E": 2
        }
      ],
      "renderStyle": "standard"
    }
  }
  connect(vs.n, ground.g) {
    "Dyad": {
      "edges": [
        {
          "S": 1,
          "M": [{"x": 120, "y": 360}, {"x": 120, "y": 450}, {"x": 500, "y": 450}],
          "E": 2
        }
      ],
      "renderStyle": "standard"
    }
  }
  connect(ramp.y, vc.C) {
    "Dyad": {
      "edges": [{"S": 1, "M": [{"x": 740, "y": 220}], "E": 2}],
      "renderStyle": "standard"
    }
  }
metadata {
  "Dyad": {
    "tests": {"case1": {"stop": 1, "expect": {"signals": ["vc.v", "vc.i", "vc.Q"]}}}
  }
}
end


Test Cases ​

Test Case case1 ​

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