Version 4
SHEET 1 880 680
WIRE -304 208 -304 192
WIRE -304 448 -304 432
WIRE 0 288 0 208
WIRE 0 528 0 448
WIRE 32 192 -304 192
WIRE 32 208 0 208
WIRE 32 432 -304 432
WIRE 32 448 0 448
WIRE 64 160 64 144
WIRE 64 288 64 240
WIRE 64 400 64 384
WIRE 64 528 64 480
WIRE 400 144 64 144
WIRE 400 208 400 144
WIRE 400 384 64 384
WIRE 400 448 400 384
WIRE 576 288 576 176
WIRE 576 416 576 288
WIRE 640 288 576 288
FLAG 400 288 0
FLAG -304 288 0
FLAG 400 144 o1
FLAG 64 288 0
FLAG 0 288 0
FLAG -304 192 in1
FLAG 400 528 0
FLAG -304 528 0
FLAG 400 384 o2
FLAG 64 528 0
FLAG 0 528 0
FLAG -304 432 in2
FLAG 640 368 0
FLAG 512 176 0
FLAG 512 416 0
SYMBOL current 400 288 R180
WINDOW 0 24 88 Left 0
WINDOW 3 24 0 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value 1
SYMBOL voltage -304 192 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -20 142 Left 0
SYMATTR Value PULSE(10 0 1u 1n 1n 999)
SYMATTR InstName V1
SYMBOL NORP12 48 144 R0
SYMATTR InstName U1
SYMBOL current 400 528 R180
WINDOW 0 24 88 Left 0
WINDOW 3 24 0 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I2
SYMATTR Value 1
SYMBOL voltage -304 432 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -20 142 Left 0
SYMATTR Value PULSE(1000 0 1u 1n 1n 999)
SYMATTR InstName V2
SYMBOL NORP12 48 384 R0
SYMATTR InstName U2
SYMBOL voltage 640 272 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 200kV
SYMBOL diode 512 192 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value Dsw
SYMBOL diode 512 432 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D2
SYMATTR Value Dsw
TEXT -346 -14 Left 0 ;.dc dec v1 .1 10000 20
TEXT -346 18 Left 0 !.tran 0 120m 0
TEXT -344 -72 Left 0 ;Light Dependent Resistor NORP12, made from datasheet by RS Components, 1997
TEXT -216 168 Left 0 ;Light input / Lux
TEXT -352 56 Left 0 !.options plotwinsize=0
TEXT 128 80 Left 0 !.model dsw D(Ron=1 Roff=1G Vfwd=0)