Version 4
SHEET 1 1112 680
WIRE 544 -144 304 -144
WIRE -32 32 -32 16
WIRE 544 32 544 -144
WIRE 592 32 592 -16
WIRE 592 48 592 32
WIRE -48 80 -128 80
WIRE 112 80 32 80
WIRE 176 80 112 80
WIRE 352 80 256 80
WIRE 368 80 352 80
WIRE 528 80 432 80
WIRE 720 80 608 80
WIRE -128 112 -128 80
WIRE 112 112 112 80
WIRE 720 128 720 80
WIRE -128 240 -128 192
WIRE 112 240 112 176
WIRE 112 240 -128 240
WIRE 720 240 720 208
WIRE 720 240 112 240
WIRE 112 256 112 240
FLAG 112 256 0
FLAG 304 -64 0
FLAG 592 -16 0
FLAG 16 32 0
FLAG -32 -64 0
SYMBOL cap 96 112 R0
SYMATTR InstName C
SYMATTR Value 180µ
SYMBOL ind 272 96 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 45µ
SYMBOL voltage -128 96 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 8k
SYMBOL res 704 112 R0
WINDOW 3 36 68 Left 0
SYMATTR Value R=31.87*(I(V_Mess))**(1/2)
SYMATTR InstName R1
SYMBOL voltage 448 80 R90
WINDOW 0 -32 56 VBottom 0
WINDOW 3 32 56 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V_Mess
SYMATTR Value 0
SYMBOL sw 624 80 R90
WINDOW 3 24 104 Invisible 0
SYMATTR InstName S2
SYMBOL voltage 304 -160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -108 -1 Invisible 0
SYMATTR Value PULSE(10 -10 0 1µ 1µ 20.1m)
SYMATTR InstName V2
SYMBOL sw 48 80 R90
WINDOW 3 24 104 Invisible 0
SYMATTR InstName S1
SYMBOL voltage -32 32 M180
WINDOW 0 24 104 Left 0
WINDOW 3 -152 133 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value PULSE(-10 10 0 .1µ .1µ 20m)
TEXT -64 336 Left 0 !.tran 0 22m 20m startup uic
TEXT -72 392 Left 0 !.model SW SW(Ron=.001µ Roff=1000Meg Vt=5 Vh=4)