{
  "circuit": {
    "components": [
      {
        "ref": "V1",
        "type": "voltage",
        "value": "15"
      },
      {
        "ref": "R1",
        "type": "res",
        "value": "1.8k"
      },
      {
        "ref": "D1",
        "type": "zener",
        "device": {
          "vz": 8.3,
          "exact": true
        }
      },
      {
        "ref": "Q1",
        "type": "npn",
        "device": {
          "params": {
            "BF": 100
          }
        }
      },
      {
        "ref": "RL",
        "type": "res",
        "value": "2k"
      }
    ],
    "nets": {
      "vin": [
        "V1.+",
        "R1.a",
        "Q1.C"
      ],
      "vb": [
        "R1.b",
        "D1.cathode",
        "Q1.B"
      ],
      "vout": [
        "Q1.E",
        "RL.a"
      ],
      "0": [
        "V1.-",
        "D1.anode",
        "RL.b"
      ]
    }
  },
  "analysis": {
    "runs": [
      {
        "id": "nominal",
        "type": "op"
      },
      {
        "id": "linesweep",
        "type": "dc",
        "label": "line regulation",
        "sweep": {
          "source": "V1",
          "start": 12,
          "stop": 20,
          "step": 1
        }
      },
      {
        "id": "loadsweep",
        "type": "param_sweep",
        "label": "load regulation",
        "component": "RL",
        "values": [
          "100k",
          "5k",
          "2k",
          "1k",
          "500"
        ]
      }
    ],
    "measurements": [
      {
        "name": "vout_nominal",
        "run": "nominal",
        "expr": "V(vout)"
      },
      {
        "name": "vb_nominal",
        "run": "nominal",
        "expr": "V(vb)",
        "guard": "cross-simulator tripwire: vb must sit near 8.292 V on any compliant backend"
      },
      {
        "name": "iz_nominal",
        "run": "nominal",
        "expr": "I(D1)"
      },
      {
        "name": "vout_low",
        "run": "linesweep",
        "expr": "V(vout)",
        "at": {
          "V1": 12
        }
      },
      {
        "name": "vout_high",
        "run": "linesweep",
        "expr": "V(vout)",
        "at": {
          "V1": 20
        }
      },
      {
        "name": "line_reg_pct",
        "kind": "derived",
        "formula": "100 * (vout_high - vout_low) / vout_low",
        "definition": "12 V to 20 V input, normalised to the 12 V output"
      },
      {
        "name": "vout_noload",
        "run": "loadsweep",
        "expr": "V(vout)",
        "at": {
          "RL": "100k"
        }
      },
      {
        "name": "vout_fullload",
        "run": "loadsweep",
        "expr": "V(vout)",
        "at": {
          "RL": "500"
        }
      },
      {
        "name": "load_reg_pct",
        "kind": "derived",
        "formula": "100 * (vout_noload - vout_fullload) / vout_fullload",
        "definition": "no-load to full-load, normalised to full-load"
      },
      {
        "kind": "regime",
        "run": "nominal",
        "assert": "zener_in_breakdown",
        "device": "D1",
        "vz": 8.3
      },
      {
        "kind": "regime",
        "run": "nominal",
        "assert": "bjt_active",
        "device": "Q1"
      },
      {
        "kind": "regime",
        "run": "linesweep",
        "assert": "zener_in_breakdown",
        "device": "D1",
        "vz": 8.3
      },
      {
        "kind": "regime",
        "run": "linesweep",
        "assert": "bjt_active",
        "device": "Q1"
      },
      {
        "kind": "regime",
        "run": "loadsweep",
        "assert": "zener_in_breakdown",
        "device": "D1",
        "vz": 8.3
      },
      {
        "kind": "regime",
        "run": "loadsweep",
        "assert": "bjt_active",
        "device": "Q1"
      }
    ]
  },
  "asks": [
    {
      "text": "output voltage",
      "answered_by": "vout_nominal"
    },
    {
      "text": "line regulation",
      "answered_by": "line_reg_pct"
    },
    {
      "text": "load regulation",
      "answered_by": "load_reg_pct"
    },
    {
      "text": "Zener diode current",
      "answered_by": "iz_nominal"
    }
  ],
  "source": {
    "file": "lab manual, section 2.14 open ended question (screenshot, circuit diagram in image)",
    "extractor": "human transcription from screenshot"
  },
  "question": "Calculate the output voltage in both load and line regulation and Zener diode current in the regulator circuit shown below using LTspice."
}