Version 4
SHEET 1 3056 904
WIRE 1472 -608 1280 -608
WIRE 1280 -528 1280 -608
WIRE 208 -448 32 -448
WIRE 336 -448 208 -448
WIRE -2512 -384 -2544 -384
WIRE -2384 -384 -2400 -384
WIRE -1728 -384 -2080 -384
WIRE -2080 -320 -2080 -384
WIRE 1472 -320 1472 -608
WIRE 1632 -320 1472 -320
WIRE -2544 -304 -2544 -384
WIRE -2400 -304 -2400 -384
WIRE 208 -304 208 -448
WIRE 336 -304 336 -448
WIRE 528 -272 416 -272
WIRE 688 -272 608 -272
WIRE 1408 -272 688 -272
WIRE 1632 -272 1632 -320
WIRE -1728 -224 -1728 -384
WIRE -1728 -224 -1872 -224
WIRE -1600 -224 -1728 -224
WIRE 1536 -224 1472 -224
WIRE 1568 -224 1536 -224
WIRE -2080 -208 -2080 -240
WIRE 1664 -176 1632 -176
WIRE -1872 -112 -1872 -224
WIRE -1872 -16 -1872 -32
WIRE -1184 -16 -1872 -16
WIRE -992 -16 -1104 -16
WIRE -880 -16 -992 -16
WIRE -672 -16 -800 -16
WIRE -592 -16 -672 -16
WIRE 128 -16 -592 -16
WIRE 144 -16 128 -16
WIRE 528 -16 416 -16
WIRE -1872 0 -1872 -16
WIRE 1152 0 1024 0
WIRE 1280 0 1280 -448
WIRE 1280 0 1216 0
WIRE 1664 16 1664 -176
WIRE 1664 16 1408 16
WIRE -672 32 -672 -16
WIRE -592 32 -592 -16
WIRE -1600 64 -1600 -224
WIRE 464 112 416 112
WIRE 688 128 688 -272
WIRE -1600 160 -1600 144
WIRE -1184 160 -1600 160
WIRE -1072 160 -1104 160
WIRE -992 160 -992 -16
WIRE -672 160 -672 96
WIRE -672 160 -720 160
WIRE -592 160 -592 96
WIRE -592 160 -672 160
WIRE -544 160 -592 160
WIRE 528 160 528 -16
WIRE 528 160 -464 160
WIRE -1600 176 -1600 160
WIRE 464 176 464 112
WIRE 1536 208 1536 -224
WIRE 1664 208 1664 16
WIRE 1024 288 1024 0
WIRE 1136 288 1024 288
WIRE 1280 288 1280 0
WIRE 1280 288 1232 288
WIRE 1536 288 1280 288
WIRE 1664 288 1536 288
WIRE 2048 288 1664 288
WIRE 2432 288 2128 288
WIRE 2720 288 2432 288
WIRE 2784 288 2720 288
WIRE 2432 320 2432 288
WIRE -1872 352 -1872 80
WIRE -1744 352 -1872 352
WIRE -1600 352 -1600 256
WIRE -1600 352 -1744 352
WIRE 272 368 272 144
WIRE 272 368 48 368
WIRE 464 368 464 320
WIRE 464 368 272 368
WIRE 688 368 688 208
WIRE 688 368 464 368
WIRE 1184 400 1184 352
WIRE 1408 400 1408 16
WIRE 1408 400 1184 400
WIRE -720 416 -720 160
WIRE -1744 448 -1744 352
WIRE 1024 464 1024 288
WIRE 2720 528 2720 288
WIRE -992 560 -992 160
WIRE 1024 624 1024 544
WIRE 976 640 816 640
WIRE 816 656 816 640
WIRE 2720 784 2720 608
WIRE 2800 784 2720 784
WIRE -992 816 -992 640
WIRE 976 816 976 688
WIRE 976 816 -992 816
WIRE 1024 816 1024 704
WIRE 1024 816 976 816
WIRE 2720 816 2720 784
WIRE 2720 816 1024 816
FLAG -2080 -208 0
FLAG -1744 448 0
FLAG -720 416 0
FLAG 2432 320 0
FLAG 816 656 0
FLAG -2400 -224 0
FLAG -2384 -384 Vs-
IOPIN -2384 -384 Out
FLAG -2512 -384 Vs+
IOPIN -2512 -384 Out
FLAG -2544 -224 0
FLAG 48 368 Vs-
IOPIN 48 368 In
FLAG 32 -448 Vs+
IOPIN 32 -448 In
FLAG 2784 288 OUT+
IOPIN 2784 288 Out
FLAG 2800 784 OUT-
IOPIN 2800 784 Out
DATAFLAG 2720 784 ""
SYMBOL LM723 272 -176 R0
SYMATTR InstName U1
SYMBOL res -1088 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R147
SYMATTR Value 261k
SYMBOL res -784 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R142
SYMATTR Value 316
SYMBOL res -976 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R146
SYMATTR Value 6.19k
SYMBOL res -1088 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R144
SYMATTR Value 0.5k
SYMBOL voltage -2080 -336 R0
SYMATTR InstName Vreference
SYMATTR Value 6.5
SYMBOL res -1888 -16 R0
SYMATTR InstName R2b
SYMATTR Value 5k
SYMBOL res -1888 -128 R0
SYMATTR InstName R2t
SYMATTR Value 5k
SYMBOL res -1616 48 R0
SYMATTR InstName R1t
SYMATTR Value {Rtop}
SYMBOL res -1616 160 R0
SYMATTR InstName R1b
SYMATTR Value {Rbot}
SYMBOL cap 448 176 R0
SYMATTR InstName C111
SYMATTR Value 4n7
SYMBOL res 448 224 R0
SYMATTR InstName R139
SYMATTR Value 1k
SYMBOL res 624 -288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R138
SYMATTR Value 6k81
SYMBOL res 672 112 R0
WINDOW 3 -14 47 Left 2
SYMATTR InstName R163
SYMATTR Value 10k
SYMBOL res -448 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R141
SYMATTR Value 6k19
SYMBOL diode -608 32 R0
SYMATTR InstName D117
SYMBOL diode -656 96 R180
WINDOW 0 86 64 Right 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D116
SYMBOL npn 1408 -320 R0
SYMATTR InstName Q1
SYMBOL npn 1568 -272 R0
SYMATTR InstName Q2
SYMBOL voltage 1280 -544 R0
SYMATTR InstName V4
SYMATTR Value 10
SYMBOL res 1520 192 R0
SYMATTR InstName R121
SYMATTR Value 1k
SYMBOL res 1648 192 R0
SYMATTR InstName R122
SYMATTR Value 100
SYMBOL res 2144 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R162
SYMATTR Value 167m
SYMBOL npn 1136 352 R270
SYMATTR InstName Q32
SYMATTR Value 2N3055
SYMBOL voltage 1024 448 R0
SYMATTR InstName V5
SYMATTR Value 5
SYMBOL res -1008 544 R0
SYMATTR InstName R166
SYMATTR Value 40k2
SYMBOL res 2704 512 R0
SYMATTR InstName Rload
SYMATTR Value 13.3
SYMBOL e 1024 608 R0
SYMATTR InstName E1
SYMATTR Value 1
SYMBOL voltage -2400 -320 R0
WINDOW 0 27 14 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value -5.4
SYMBOL voltage -2544 -320 R0
SYMATTR InstName V6
SYMATTR Value 14
SYMBOL diode 1216 -16 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
TEXT -2552 592 Left 2 !.op
TEXT -1584 40 Left 2 !.step param Rtop 0.001 10k 1k
TEXT -1568 280 Left 2 !.param Rbot = 10.000001k - Rtop
TEXT 2768 192 Left 2 ;Positive output
TEXT 2808 888 Left 2 ;Negative output
TEXT 1168 584 Left 2 ;Simulated Thyristor pre-regulator (output voltage +5V)
TEXT -1768 160 Left 2 ;CV coarse
TEXT -2056 -24 Left 2 ;CV fine
TEXT 952 -496 Left 2 ;Voltage not in schematic
TEXT -2552 528 Left 2 ;Global SPICE directives
TEXT 944 168 Left 2 ;2n3055 instead of BDY20
TEXT -336 -288 Left 2 ;pin numbering for DIP package\nT100 metal can has different pinout