Version 4 SHEET 1 2252 1608 WIRE 1920 1200 1728 1200 WIRE 1728 1248 1728 1200 WIRE 1920 1264 1920 1200 WIRE 1664 1296 1520 1296 WIRE 1520 1312 1520 1296 WIRE 1520 1408 1520 1392 WIRE 1728 1408 1728 1344 WIRE 1920 1408 1920 1344 FLAG 1520 1408 0 FLAG 1728 1408 0 FLAG 1920 1408 0 SYMBOL npn 1664 1248 R0 SYMATTR InstName Q1 SYMATTR Value 2N2222 SYMBOL current 1520 1392 M180 WINDOW 0 23 76 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName I1 SYMATTR Value 0 SYMBOL voltage 1920 1248 R0 WINDOW 39 0 0 Left 2 WINDOW 123 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 0 TEXT 1560 1464 Left 2 !.dc V1 0 10 10m I1 10u 50u 10u TEXT 1560 1496 Left 2 !.step NPN 2N2222(Vaf) 100 50 25 TEXT 1728 1536 Top 1 ;This example schematic is supplied for informational/educational purposes only.