Version 4 SHEET 1 1224 816 WIRE 432 32 432 0 WIRE -32 48 -32 -16 WIRE 432 144 432 112 WIRE 432 160 432 144 WIRE -32 176 -32 128 WIRE 240 208 128 208 WIRE 352 208 320 208 WIRE 368 208 352 208 WIRE 128 272 128 208 WIRE 432 272 432 256 WIRE 432 288 432 272 WIRE 128 384 128 352 WIRE 128 512 128 464 FLAG -32 176 0 FLAG 432 0 VCC FLAG 432 288 0 FLAG -32 -16 VCC FLAG 432 144 C FLAG 432 272 E FLAG 128 512 0 FLAG 352 208 B SYMBOL voltage -32 32 R0 SYMATTR InstName Vps1 SYMATTR Value 10V SYMBOL res 416 16 R0 SYMATTR InstName RC SYMATTR Value 3k SYMBOL npn 368 160 R0 SYMATTR InstName Q1 SYMATTR Value npn_ideal_transistor SYMBOL res 336 192 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName RBB SYMATTR Value 100k SYMBOL voltage 128 368 R0 WINDOW 0 -89 58 Left 2 WINDOW 3 40 100 Left 2 SYMATTR InstName VBB SYMATTR Value 3V SYMBOL voltage 128 256 R0 WINDOW 0 -69 58 Left 2 WINDOW 3 31 101 Left 2 SYMATTR InstName vi SYMATTR Value 1mV TEXT 24 584 Left 2 !.model npn_ideal_transistor npn (Is=1.8104e-15 Bf=100) TEXT 344 688 Left 2 ;.OP TEXT 288 640 Left 2 !.TF V(C) Vi