ZTX415 smulated curves (zener modeling thread in SED)

Fred, What did your testbench look like... how did you generate those curves? ...Jim Thompson

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Thusly:

X1 refers to the hierarchical schematic of the ZTX415 model I posted earlier. I did it that way so's I could readily change things and crank out quick results. You don't need to do it that way, you can use the subckt file you have instead.

It's a quick and dirty curve tracer. Voltage source to collector, with 100 ohm series resistor. Current source to base. DC sweep of collector voltage, stepping base current. Plot collector current against actual collector voltage (not V1).

I've put a .PROBE card in there to remind you

I wouldn't recommend doing the same thing with a "real" curve tracer, using DC, except, maybe in liquid nitrogen :-)

Version 4 SHEET 1 2840 1916 WIRE 2128 1152 2016 1152 WIRE 2128 1216 2128 1152 WIRE 2016 1232 2016 1152 WIRE 2016 1232 1984 1232 WIRE 1888 1248 1840 1248 WIRE 1840 1264 1840 1248 WIRE 2000 1264 1984 1264 WIRE 1840 1360 1840 1344 WIRE 2000 1360 2000 1264 WIRE 2128 1360 2128 1296 FLAG 2128 1360 0 FLAG 2000 1360 0 FLAG 1840 1360 0 SYMBOL voltage 2128 1200 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 106 Left 2 SYMATTR SpiceLine Rser=100 SYMATTR InstName V1 SYMATTR Value 400 SYMBOL current 1840 1344 R180 WINDOW 0 24 80 Left 2 WINDOW 3 24 0 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I1 SYMATTR Value 0 SYMBOL ztx415model 1936 1248 R0 SYMATTR InstName X1 TEXT 1824 1416 Left 2 !.dc v1 0 400 1m i1 3m 6m 1m TEXT 1856 1440 Left 2 !.probe v(n001)

--
"For a successful technology, reality must take precedence 
over public relations, for nature cannot be fooled."
                                       (Richard Feynman)

It won't do what I wanted. Get rid of it.

Just make the X-axis v(n001), and the Y-axis I(X1:16).

My mistake.

--
"For a successful technology, reality must take precedence 
over public relations, for nature cannot be fooled."
                                       (Richard Feynman)