Version 4
SHEET 1 880 680
WIRE 96 64 0 64
WIRE 160 64 96 64
WIRE 160 144 160 64
WIRE 0 160 0 64
WIRE 0 160 -32 160
WIRE 0 192 -32 192
WIRE 0 272 0 192
WIRE 80 272 0 272
WIRE 160 272 160 208
WIRE 160 272 80 272
WIRE 80 304 80 272
FLAG 80 304 0
FLAG 96 64 Vpv
SYMBOL pvcell -80 176 R0
WINDOW 39 -183 118 Left 0
SYMATTR SpiceLine Vmax={vmax} Imax={imax}
SYMATTR InstName X1
SYMBOL diode 144 144 R0
SYMATTR InstName D1
TEXT -216 -24 Left 0 !.param imax=3 vmax=17.7\n.step param vpv 0 17.7 0.1 ; x-axis
TEXT 192 192 Left 0 !.model d d(ron=1m vfwd={vpv})
TEXT -216 42 Left 0 !.op
RECTANGLE Normal 592 448 -352 -144