Version 4 SHEET 1 1224 816 WIRE 432 32 432 0 WIRE 32 96 32 32 WIRE 176 96 176 32 WIRE 432 144 432 112 WIRE 432 160 432 144 WIRE 368 208 320 208 WIRE 32 224 32 176 WIRE 32 224 -32 224 WIRE 176 224 176 176 WIRE 176 224 32 224 WIRE -32 240 -32 224 WIRE 32 272 32 224 WIRE 432 272 432 256 WIRE 432 288 432 272 WIRE 32 416 32 352 WIRE 432 416 432 368 FLAG 432 0 VCC FLAG 432 416 VEE FLAG -32 240 0 FLAG 32 32 VCC FLAG 32 416 VEE FLAG 432 144 C FLAG 432 272 E FLAG 176 32 VBB FLAG 320 208 VBB SYMBOL voltage 32 80 R0 SYMATTR InstName Vps1 SYMATTR Value 10V SYMBOL res 416 16 R0 SYMATTR InstName RC SYMATTR Value 4.7k SYMBOL npn 368 160 R0 SYMATTR InstName Q1 SYMATTR Value npn_ideal_transistor SYMBOL res 416 272 R0 SYMATTR InstName RE SYMATTR Value 3.3k SYMBOL voltage 32 256 R0 SYMATTR InstName Vps2 SYMATTR Value 0V SYMBOL voltage 176 80 R0 SYMATTR InstName Vps3 SYMATTR Value 0V TEXT 280 576 Left 2 !.OP TEXT 40 520 Left 2 !.model npn_ideal_transistor npn (Is=1.8104e-15 Bf=100)