{
 "version": 2,
 "name": "Tube Meter (6E2)",
 "board": {
  "rows": 10,
  "cols": 26,
  "kind": "strip"
 },
 "cuts": [
  "0,10",
  "4,22",
  "7,12",
  "8,2",
  "8,12"
 ],
 "parts": [
  {
   "id": "tm01mtr",
   "kind": "res",
   "ref": "R1",
   "value": "220k",
   "pins": [
    [
     0,
     8
    ],
    [
     0,
     12
    ]
   ],
   "device": "fixed"
  },
  {
   "id": "tm02mtr",
   "kind": "res",
   "ref": "R2",
   "value": "220k",
   "pins": [
    [
     0,
     14
    ],
    [
     2,
     14
    ]
   ],
   "device": "fixed",
   "mount": "vertical"
  },
  {
   "id": "tm03mtr",
   "kind": "res",
   "ref": "R3",
   "value": "100k",
   "pins": [
    [
     4,
     5
    ],
    [
     8,
     5
    ]
   ],
   "device": "fixed"
  },
  {
   "id": "tm04mtr",
   "kind": "res",
   "ref": "R4",
   "value": "22k",
   "pins": [
    [
     8,
     6
    ],
    [
     5,
     6
    ]
   ],
   "device": "fixed"
  },
  {
   "id": "tm05mtr",
   "kind": "res",
   "ref": "R5",
   "value": "10k",
   "pins": [
    [
     4,
     7
    ],
    [
     7,
     7
    ]
   ],
   "device": "fixed"
  },
  {
   "id": "tm06mtr",
   "kind": "res",
   "ref": "R6",
   "value": "470R",
   "pins": [
    [
     9,
     9
    ],
    [
     5,
     9
    ]
   ],
   "device": "fixed"
  },
  {
   "id": "tm07mtr",
   "kind": "res",
   "ref": "R7",
   "value": "1M",
   "pins": [
    [
     7,
     15
    ],
    [
     8,
     15
    ]
   ],
   "device": "fixed",
   "mount": "vertical"
  },
  {
   "id": "tm08mtr",
   "kind": "res",
   "ref": "R8",
   "value": "2M2",
   "pins": [
    [
     8,
     18
    ],
    [
     5,
     18
    ]
   ],
   "device": "fixed"
  },
  {
   "id": "tm09mtr",
   "kind": "cap",
   "ref": "C1",
   "value": "100n",
   "pins": [
    [
     8,
     1
    ],
    [
     8,
     3
    ]
   ],
   "device": "ceramic disc"
  },
  {
   "id": "tm10mtr",
   "kind": "cap",
   "ref": "C2",
   "value": "100n",
   "pins": [
    [
     7,
     10
    ],
    [
     7,
     14
    ]
   ],
   "device": "ceramic disc"
  },
  {
   "id": "tm11mtr",
   "kind": "cap",
   "ref": "C3",
   "value": "100n",
   "pins": [
    [
     8,
     20
    ],
    [
     5,
     20
    ]
   ],
   "device": "ceramic disc"
  },
  {
   "id": "tm12mtr",
   "kind": "cap",
   "ref": "C4",
   "value": "100n",
   "pins": [
    [
     4,
     11
    ],
    [
     5,
     11
    ]
   ],
   "device": "ceramic disc"
  },
  {
   "id": "tm13mtr",
   "kind": "ecap",
   "ref": "C5",
   "value": "100u",
   "pins": [
    [
     6,
     13
    ],
    [
     5,
     13
    ]
   ],
   "polarized": true
  },
  {
   "id": "tm14mtr",
   "kind": "ecap",
   "ref": "C6",
   "value": "100u",
   "pins": [
    [
     4,
     19
    ],
    [
     5,
     19
    ]
   ],
   "polarized": true
  },
  {
   "id": "tm15mtr",
   "kind": "diode",
   "ref": "D1",
   "value": "1N5817",
   "pins": [
    [
     4,
     24
    ],
    [
     4,
     21
    ]
   ],
   "polarized": true,
   "device": "schottky"
  },
  {
   "id": "tm16mtr",
   "kind": "diode",
   "ref": "D2",
   "value": "1N4148",
   "pins": [
    [
     7,
     17
    ],
    [
     5,
     17
    ]
   ],
   "polarized": true,
   "device": "switching"
  },
  {
   "id": "tm17mtr",
   "kind": "trans",
   "ref": "Q1",
   "value": "",
   "device": "2N3904",
   "pins": [
    [
     9,
     8
    ],
    [
     8,
     8
    ],
    [
     7,
     8
    ]
   ]
  },
  {
   "id": "tm18mtr",
   "kind": "reg",
   "ref": "U1",
   "value": "",
   "device": "7806",
   "pins": [
    [
     6,
     16
    ],
    [
     5,
     16
    ],
    [
     4,
     16
    ]
   ]
  }
 ],
 "ics": [],
 "pads": [
  {
   "id": "tmp01",
   "label": "HV+",
   "at": [
    0,
    2
   ],
   "to": "the boost module's + output, 150 to 250 V DC. HIGH VOLTAGE"
  },
  {
   "id": "tmp02",
   "label": "TARGET",
   "at": [
    0,
    5
   ],
   "to": "tube pin 6, the fluorescent screen - straight to the high voltage. HIGH VOLTAGE"
  },
  {
   "id": "tmp03",
   "label": "ANODE",
   "at": [
    2,
    17
   ],
   "to": "tube pin 9, the triode anode - and pin 7, the deflection electrode, wired to it at the socket. HIGH VOLTAGE"
  },
  {
   "id": "tmp04",
   "label": "12V",
   "at": [
    4,
    25
   ],
   "to": "DC jack tip, 12 V, center positive, through the power toggle. The boost module's input comes from the same jack"
  },
  {
   "id": "tmp05",
   "label": "+12V",
   "at": [
    4,
    9
   ],
   "to": "test point on the protected rail; nothing leaves the board here. It also tells the checker this strip is a supply"
  },
  {
   "id": "tmp06",
   "label": "GND",
   "at": [
    5,
    0
   ],
   "to": "ground: DC jack sleeve, the boost module's -, tube cathode pin 3 and heater pin 5, the input jack sleeve, SENS lug 3"
  },
  {
   "id": "tmp07",
   "label": "HEATER",
   "at": [
    6,
    0
   ],
   "to": "tube heater, pin 4 - 6 V from the regulator. Pin 5 goes to GND"
  },
  {
   "id": "tmp08",
   "label": "SENS_W",
   "at": [
    8,
    0
   ],
   "to": "sensitivity pot wiper. Lug 1 to the input jack tip, lug 3 to GND"
  },
  {
   "id": "tmp09",
   "label": "GRID",
   "at": [
    8,
    24
   ],
   "to": "tube grid, pin 1 - the negative envelope"
  }
 ],
 "netlist": "# Tube Meter (6E2) - written from the board\n# 10 strips of 26 holes, 18 parts, 5 cuts\n#\n# HIGH VOLTAGE: strips a and c carry the boost module output, 150-250 V. Strips b and\n# d are EMPTY on purpose. Nothing else on this board goes above 12 V.\n# Q1 lifts the input about 20x; D2 clamps it; R7/C3/R8 hold the negative peak for\n# the grid. R1+R2 are the anode load, split so each sees half the volts.\n\nHV:      @HV+ R1.A @TARGET\nHV_MID:  R1.B R2.A\nANODE:   @ANODE R2.B\n12V:     @12V D1.A\n+12:     D1.B R3.A R5.A C4.A C6.A U1.I @+12V\nGND:     @GND R4.B R6.B R8.B C3.B C4.B C5.B C6.B D2.B U1.G\n+6:      U1.O C5.A @HEATER\nSENS_W:  @SENS_W C1.A\nBASE:    C1.B R3.B R4.A Q1.B\nCOLL:    Q1.C R5.B C2.A\nEMIT:    Q1.E R6.A\nX:       C2.B R7.A D2.A\nGRID:    R7.B R8.A C3.A @GRID\n"
}