Version 4
SHEET 1 880 680
WIRE -352 128 -352 112
WIRE -352 208 -352 192
WIRE -352 288 -352 272
WIRE -352 368 -352 288
WIRE -352 480 -352 432
WIRE -320 112 -352 112
WIRE -288 288 -352 288
WIRE -288 368 -288 288
WIRE -288 480 -352 480
WIRE -288 480 -288 448
WIRE -272 288 -288 288
WIRE -208 112 -240 112
WIRE -208 144 -208 112
WIRE -208 224 -208 208
WIRE -208 240 -208 224
WIRE -208 480 -288 480
WIRE -208 480 -208 336
WIRE -128 192 -128 144
WIRE -128 256 -128 192
WIRE -128 480 -208 480
WIRE -128 480 -128 336
WIRE -96 224 -208 224
WIRE -96 384 -96 352
WIRE -96 480 -128 480
WIRE -96 480 -96 448
WIRE -80 144 -128 144
WIRE -48 192 -128 192
WIRE -48 192 -48 176
WIRE -32 352 -96 352
WIRE -32 352 -32 256
WIRE -32 384 -32 352
WIRE -32 480 -96 480
WIRE -32 480 -32 464
WIRE 0 352 -32 352
WIRE 32 144 -16 144
WIRE 32 224 -16 224
WIRE 32 224 32 144
WIRE 48 224 32 224
WIRE 48 256 -32 256
WIRE 64 144 32 144
WIRE 80 288 80 272
WIRE 112 352 80 352
WIRE 176 448 176 416
WIRE 192 112 -208 112
WIRE 192 144 144 144
WIRE 192 144 192 112
WIRE 192 192 192 144
WIRE 192 240 112 240
WIRE 192 240 192 192
WIRE 192 352 176 352
WIRE 192 352 192 240
WIRE 224 416 176 416
WIRE 224 416 224 336
WIRE 224 480 -32 480
WIRE 224 480 224 416
WIRE 272 240 272 224
WIRE 272 336 224 336
WIRE 272 336 272 320
WIRE 272 352 272 336
WIRE 272 448 272 432
FLAG 176 448 0
FLAG 272 224 V+
FLAG 272 448 V-
FLAG 80 288 V-
FLAG 80 208 V+
FLAG 192 192 Out
SYMBOL res 96 336 R90
WINDOW 0 -6 53 VBottom 0
WINDOW 3 36 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 6k8
SYMBOL res -48 368 R0
SYMATTR InstName R2
SYMATTR Value 6k8
SYMBOL polcap -112 384 R0
WINDOW 3 24 64 Left 0
SYMATTR InstName C2
SYMATTR Value 1µ
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=50 Irms=36m Rser=3.5 MTBF=2000 Lser=0 mfg="Nichicon" pn="UPL1H010MAH" type="Al electrolytic" ppPkg=1
SYMBOL voltage 272 224 R0
WINDOW 0 -64 59 Left 0
WINDOW 3 -13 59 Left 0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage 272 336 R0
WINDOW 0 -82 59 Left 0
WINDOW 3 -13 59 Left 0
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL Robertugo\\Pote -112 160 R270
WINDOW 0 -18 12 VRight 0
WINDOW 3 -18 72 VRight 0
WINDOW 123 30 -5 VCenter 0
SYMATTR InstName U2
SYMATTR Value Rt=2K
SYMATTR Value2 Set=.02
SYMBOL res -144 240 R0
SYMATTR InstName R4
SYMATTR Value 5k6
SYMBOL res 0 208 R90
WINDOW 0 16 107 VBottom 0
WINDOW 3 -12 -4 VTop 0
SYMATTR InstName R5
SYMATTR Value 56k
SYMBOL res 160 128 R90
WINDOW 0 16 105 VBottom 0
WINDOW 3 37 31 VTop 0
SYMATTR InstName R3
SYMATTR Value 13k
SYMBOL zener -224 144 R0
WINDOW 0 20 66 Left 0
WINDOW 3 24 72 Invisible 0
SYMATTR InstName Dz12
SYMATTR Value BZX84C12L
SYMBOL npn2 -272 240 R0
WINDOW 0 50 26 Left 0
WINDOW 3 20 48 Left 0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL zener -368 208 R0
WINDOW 0 20 66 Left 0
WINDOW 3 24 72 Invisible 0
SYMATTR InstName Dz5
SYMATTR Value 1N751
SYMBOL diode -368 192 M180
WINDOW 0 37 32 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D1
SYMATTR Value 1N914
SYMBOL res -224 96 R90
WINDOW 0 16 107 VBottom 0
WINDOW 3 -12 -12 VTop 0
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL res -304 352 R0
WINDOW 0 25 47 Left 0
WINDOW 3 24 81 Left 0
SYMATTR InstName R7
SYMATTR Value 1k
SYMBOL polcap -368 368 R0
WINDOW 3 24 64 Left 0
SYMATTR InstName C3
SYMATTR Value 1µ
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=50 Irms=36m Rser=3.5 MTBF=2000 Lser=0 mfg="Nichicon" pn="UPL1H010MAH" type="Al electrolytic" ppPkg=1
SYMBOL polcap 112 368 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C1
SYMATTR Value 1µ
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=50 Irms=36m Rser=3.5 MTBF=2000 Lser=0 mfg="Nichicon" pn="UPL1H010MAH" type="Al electrolytic" ppPkg=1
SYMBOL Robertugo\\OPAMP5 80 176 R0
SYMATTR InstName U1
SYMATTR SpiceModel U741
TEXT 106 100 Left 0 !.tran 0 5 0