Version 4 SHEET 1 880 680 WIRE 240 0 16 0 WIRE 240 16 240 0 WIRE 320 16 240 16 WIRE 176 128 160 128 WIRE 320 128 320 16 WIRE 16 176 16 80 WIRE 240 208 240 176 WIRE 240 208 160 208 WIRE 16 256 16 176 WIRE 160 256 160 208 WIRE 160 256 16 256 WIRE 80 304 80 224 WIRE 240 304 240 288 WIRE 240 304 80 304 WIRE 320 304 320 208 WIRE 320 304 240 304 SYMBOL bv 320 112 R0 SYMATTR InstName B1 SYMATTR Value V=3 SYMBOL diode 224 16 R0 SYMATTR InstName D1 SYMBOL pnp 176 176 M180 SYMATTR InstName Q1 SYMBOL res 224 192 R0 SYMATTR InstName R1 SYMATTR Value 22 SYMBOL res 176 112 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1K SYMBOL npn 16 128 R0 SYMATTR InstName Q2 SYMBOL res 0 -16 R0 SYMATTR InstName R3 SYMATTR Value 330k TEXT 0 312 Left 2 !.tran 5s uic