Version 4
SHEET 1 2108 680
WIRE 32 16 -32 16
WIRE 128 16 32 16
WIRE 656 16 128 16
WIRE 752 16 656 16
WIRE 32 64 32 16
WIRE 128 64 128 16
WIRE 656 112 656 16
WIRE -32 128 -32 16
WIRE 752 144 752 16
WIRE 128 176 128 144
WIRE 128 192 128 176
WIRE -32 320 -32 192
WIRE 32 320 32 144
WIRE 32 320 -32 320
WIRE 128 320 128 272
WIRE 128 320 32 320
WIRE 656 320 656 192
WIRE 656 320 128 320
WIRE 752 320 752 208
WIRE 752 320 656 320
WIRE 656 368 656 320
FLAG 128 176 3
FLAG 656 368 0
SYMBOL bi 128 192 R0
SYMATTR InstName B1
SYMATTR Value I=2.2e-15*(exp(abs(V(3,0))/22)-1)*sgn(V(3,0))
SYMBOL res 112 48 R0
SYMATTR InstName R1
SYMATTR Value 54m
SYMBOL cap -48 128 R0
SYMATTR InstName C1
SYMATTR Value 750p
SYMBOL voltage 656 96 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 1
SYMBOL res 16 48 R0
SYMATTR InstName R2
SYMATTR Value 4.4g
SYMBOL NoLin\\V320LA40B 768 112 R0
SYMATTR InstName X1
TEXT 376 48 Center 0 ;V320LA40B varistor model\nby analog@ieee.org\ncoefficients and parallel resistance \nmodified by jpopelish
TEXT 424 208 Center 0 ;Note the use of abs and sgn functions \nto achieve bidirectional current flow
TEXT 520 -16 Left 0 !.op
TEXT 240 -24 Left 0 !.step V1 0 1500 10
TEXT 888 40 Left 0 !.SUBCKT MOV 1 2\n* model of Littelfuse V320LA40B 20mm diameter disc, 320 VAC max, 420 VDC max, \n* 810 Vmax @ 100A, 40 joules max.. \n*http://www.littelfuse.com/data/Data_Sheets/LA.pdf\n.param a=2.726*10**7 b=520.612 c=764.757 d=36.79386 f=4.4*10**9 g=0.0518\nRmov 1 3 R=a*exp(d*atan((b-ABS(V(1,3)))/c))\nRpar 1 3 {f}\nRser 3 2 {g}\nCpar 1 3 750p\n.ENDS
TEXT 896 0 Left 0 ;V320LA40B subcircuit provided by jpopelish@rica.net