LIBRARY

Analog.Semiconductors.Tests.PNPTest

Test circuit for PNP: the polarity mirror of the NPN common-emitter test.

The emitter sits on the 5 V rail and the collector is loaded by 1 kΩ to ground, so collector current pulls the output node up. The base is ramped from the rail down to 4 V over 1 s through 10 kΩ: the emitter-base junction voltage V_EB rises 0 to 1 V, carrying the device from cut-off through forward active into saturation, and rc.v tracks the collector current.

The base resistor keeps the drive off an ideal source across C_jE (a structurally singular configuration), and the substrate pin is grounded, reproducing the upstream use_substrate = false behavior.

Usage

ElectricalComponents.Analog.Semiconductors.Tests.PNPTest()

Behavior

Source

"""
Test circuit for PNP: the polarity mirror of the NPN common-emitter test.

The emitter sits on the 5 V rail and the collector is loaded by 1 kΩ to
ground, so collector current pulls the output node up. The base is ramped
from the rail down to 4 V over 1 s through 10 kΩ: the emitter-base junction
voltage `V_EB` rises 0 to 1 V, carrying the device from cut-off through
forward active into saturation, and `rc.v` tracks the collector current.

The base resistor keeps the drive off an ideal source across `C_jE` (a
structurally singular configuration), and the substrate pin is grounded,
reproducing the upstream `use_substrate = false` behavior.
"""
test component PNPTest
  "Supply rail level (5 V)"
  supply_lvl = BlockComponents.Sources.Constant(k = 5) {
    "Dyad": {"placement": {"diagram": {"x1": 20, "y1": 120, "x2": 120, "y2": 220}}}
  }
  "Emitter supply"
  supply = ElectricalComponents.Analog.Sources.VoltageSource() {
    "Dyad": {"placement": {"diagram": {"x1": 155, "y1": 225, "x2": 255, "y2": 325}}}
  }
  "Base ramp: 5 V down to 4 V over 1 s"
  bias_sig = BlockComponents.Sources.Ramp(offset = 5, height = -1, duration = 1) {
    "Dyad": {"placement": {"diagram": {"x1": 150, "y1": 20, "x2": 250, "y2": 120}}}
  }
  "Base drive"
  bias = ElectricalComponents.Analog.Sources.VoltageSource() {
    "Dyad": {"placement": {"diagram": {"x1": 295, "y1": 125, "x2": 395, "y2": 225}}}
  }
  "Base series resistance (10 kΩ)"
  rb = ElectricalComponents.Analog.Basic.Resistor(R = 10000) {
    "Dyad": {"placement": {"diagram": {"x1": 425, "y1": 350, "x2": 525, "y2": 450}}}
  }
  "Collector load resistor (1 kΩ)"
  rc = ElectricalComponents.Analog.Basic.Resistor(R = 1000) {
    "Dyad": {"placement": {"diagram": {"x1": 685, "y1": 275, "x2": 785, "y2": 375}}}
  }
  "Transistor under test"
  q = ElectricalComponents.Analog.Semiconductors.PNP() {
    "Dyad": {"placement": {"diagram": {"x1": 555, "y1": 350, "x2": 655, "y2": 450}}}
  }
  "Ground reference"
  ground = ElectricalComponents.Analog.Basic.Ground() {
    "Dyad": {"placement": {"diagram": {"x1": 425, "y1": 230, "x2": 525, "y2": 330}}}
  }
relations
  "Base starts at the rail: junctions discharged, collector at ground"
  initial q.V_EB = 0
  initial q.V_CS = 0
  connect(supply_lvl.y, supply.V) {"Dyad": {"edges": [{"S": 1, "M": [{"x": 205, "y": 170}], "E": 2}], "path": {}}}
  connect(bias_sig.y, bias.V) {"Dyad": {"edges": [{"S": 1, "M": [{"x": 345, "y": 70}], "E": 2}], "path": {}}}
  connect(supply.p, q.e) {
    "Dyad": {
      "edges": [
        {
          "S": 1,
          "M": [{"x": 140, "y": 275}, {"x": 140, "y": 505}, {"x": 605, "y": 505}],
          "E": 2
        }
      ],
      "path": {}
    }
  }
  connect(q.c, rc.p) {"Dyad": {"edges": [{"S": 1, "M": [{"x": 605, "y": 325}], "E": 2}], "path": {}}}
  connect(bias.p, rb.p) {
    "Dyad": {
      "edges": [{"S": 1, "M": [{"x": 280, "y": 175}, {"x": 280, "y": 400}], "E": 2}],
      "path": {}
    }
  }
  connect(rb.n, q.b) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "path": {}}}
  connect(q.s, rc.n, supply.n, bias.n, ground.g) {
    "Dyad": {
      "edges": [
        {"S": 1, "M": [], "E": -1},
        {"S": -1, "M": [{"x": 800, "y": 325}], "E": 2},
        {"S": -1, "M": [{"x": 800, "y": 516}, {"x": 270, "y": 516}], "E": -2},
        {"S": -2, "M": [], "E": 3},
        {"S": -2, "M": [{"x": 410, "y": 275}], "E": -3},
        {"S": -3, "M": [], "E": 4},
        {"S": -3, "M": [{"x": 475, "y": 175}], "E": 5}
      ],
      "junctions": [{"x": 800, "y": 400}, {"x": 270, "y": 275}, {"x": 410, "y": 175}],
      "path": {}
    }
  }
metadata {
  "Dyad": {"tests": {"case1": {"stop": 1, "expect": {"signals": ["q.V_EB", "rc.v"]}}}}
}
end

Flattened Source

"""
Test circuit for PNP: the polarity mirror of the NPN common-emitter test.

The emitter sits on the 5 V rail and the collector is loaded by 1 kΩ to
ground, so collector current pulls the output node up. The base is ramped
from the rail down to 4 V over 1 s through 10 kΩ: the emitter-base junction
voltage `V_EB` rises 0 to 1 V, carrying the device from cut-off through
forward active into saturation, and `rc.v` tracks the collector current.

The base resistor keeps the drive off an ideal source across `C_jE` (a
structurally singular configuration), and the substrate pin is grounded,
reproducing the upstream `use_substrate = false` behavior.
"""
test component PNPTest
  "Supply rail level (5 V)"
  supply_lvl = BlockComponents.Sources.Constant(k = 5) {
    "Dyad": {"placement": {"diagram": {"x1": 20, "y1": 120, "x2": 120, "y2": 220}}}
  }
  "Emitter supply"
  supply = ElectricalComponents.Analog.Sources.VoltageSource() {
    "Dyad": {"placement": {"diagram": {"x1": 155, "y1": 225, "x2": 255, "y2": 325}}}
  }
  "Base ramp: 5 V down to 4 V over 1 s"
  bias_sig = BlockComponents.Sources.Ramp(offset = 5, height = -1, duration = 1) {
    "Dyad": {"placement": {"diagram": {"x1": 150, "y1": 20, "x2": 250, "y2": 120}}}
  }
  "Base drive"
  bias = ElectricalComponents.Analog.Sources.VoltageSource() {
    "Dyad": {"placement": {"diagram": {"x1": 295, "y1": 125, "x2": 395, "y2": 225}}}
  }
  "Base series resistance (10 kΩ)"
  rb = ElectricalComponents.Analog.Basic.Resistor(R = 10000) {
    "Dyad": {"placement": {"diagram": {"x1": 425, "y1": 350, "x2": 525, "y2": 450}}}
  }
  "Collector load resistor (1 kΩ)"
  rc = ElectricalComponents.Analog.Basic.Resistor(R = 1000) {
    "Dyad": {"placement": {"diagram": {"x1": 685, "y1": 275, "x2": 785, "y2": 375}}}
  }
  "Transistor under test"
  q = ElectricalComponents.Analog.Semiconductors.PNP() {
    "Dyad": {"placement": {"diagram": {"x1": 555, "y1": 350, "x2": 655, "y2": 450}}}
  }
  "Ground reference"
  ground = ElectricalComponents.Analog.Basic.Ground() {
    "Dyad": {"placement": {"diagram": {"x1": 425, "y1": 230, "x2": 525, "y2": 330}}}
  }
relations
  "Base starts at the rail: junctions discharged, collector at ground"
  initial q.V_EB = 0
  initial q.V_CS = 0
  connect(supply_lvl.y, supply.V) {"Dyad": {"edges": [{"S": 1, "M": [{"x": 205, "y": 170}], "E": 2}], "path": {}}}
  connect(bias_sig.y, bias.V) {"Dyad": {"edges": [{"S": 1, "M": [{"x": 345, "y": 70}], "E": 2}], "path": {}}}
  connect(supply.p, q.e) {
    "Dyad": {
      "edges": [
        {
          "S": 1,
          "M": [{"x": 140, "y": 275}, {"x": 140, "y": 505}, {"x": 605, "y": 505}],
          "E": 2
        }
      ],
      "path": {}
    }
  }
  connect(q.c, rc.p) {"Dyad": {"edges": [{"S": 1, "M": [{"x": 605, "y": 325}], "E": 2}], "path": {}}}
  connect(bias.p, rb.p) {
    "Dyad": {
      "edges": [{"S": 1, "M": [{"x": 280, "y": 175}, {"x": 280, "y": 400}], "E": 2}],
      "path": {}
    }
  }
  connect(rb.n, q.b) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "path": {}}}
  connect(q.s, rc.n, supply.n, bias.n, ground.g) {
    "Dyad": {
      "edges": [
        {"S": 1, "M": [], "E": -1},
        {"S": -1, "M": [{"x": 800, "y": 325}], "E": 2},
        {"S": -1, "M": [{"x": 800, "y": 516}, {"x": 270, "y": 516}], "E": -2},
        {"S": -2, "M": [], "E": 3},
        {"S": -2, "M": [{"x": 410, "y": 275}], "E": -3},
        {"S": -3, "M": [], "E": 4},
        {"S": -3, "M": [{"x": 475, "y": 175}], "E": 5}
      ],
      "junctions": [{"x": 800, "y": 400}, {"x": 270, "y": 275}, {"x": 410, "y": 175}],
      "path": {}
    }
  }
metadata {
  "Dyad": {"tests": {"case1": {"stop": 1, "expect": {"signals": ["q.V_EB", "rc.v"]}}}}
}
end

Test Cases

Test Case case1

plt

plt

Related

• Examples

• Experiments

• Analyses

• Tests

  • Constant

  • Ground

  • PNP

  • Ramp

  • Resistor

  • VoltageSource