Version 4 SHEET 1 3784 1124 WIRE 64 192 -48 192 WIRE 272 192 64 192 WIRE 320 192 272 192 WIRE 432 192 400 192 WIRE 64 208 64 192 WIRE -48 240 -48 192 WIRE 272 256 272 192 WIRE 432 272 432 192 WIRE 64 304 64 288 WIRE 96 304 64 304 WIRE 208 304 176 304 WIRE 64 336 64 304 WIRE -48 384 -48 320 WIRE 0 384 -48 384 WIRE 272 400 272 352 WIRE -48 416 -48 384 WIRE 432 416 432 352 WIRE 464 416 432 416 WIRE 464 432 464 416 WIRE -48 528 -48 496 WIRE 64 528 64 432 WIRE 64 528 -48 528 WIRE 272 528 272 464 WIRE 272 528 64 528 WIRE 432 528 432 416 WIRE 432 528 272 528 FLAG 464 432 0 SYMBOL voltage 432 256 R0 WINDOW 0 45 53 Left 2 WINDOW 3 17 -80 Left 2 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value PULSE(16V 12V 2ms 16ms 1µs 2ms 20ms) SYMBOL res 416 176 R90 WINDOW 0 6 56 VBottom 2 WINDOW 3 26 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 220 SYMBOL npn 0 336 R0 WINDOW 0 76 83 Left 2 WINDOW 3 33 50 Left 2 SYMATTR InstName Q2 SYMATTR Value QBC547C SYMBOL res 80 304 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL res -64 400 R0 WINDOW 0 -35 41 Left 2 WINDOW 3 -6 69 Right 2 SYMATTR InstName R5 SYMATTR Value 270k SYMBOL res -64 224 R0 WINDOW 0 -38 40 Left 2 WINDOW 3 -10 71 Right 2 SYMATTR InstName R4 SYMATTR Value 6Meg7 SYMBOL pnp 208 352 M180 WINDOW 0 91 3 Left 2 WINDOW 3 38 45 Left 2 SYMATTR InstName Q1 SYMATTR Value QBC557C SYMBOL res 192 288 R90 WINDOW 0 6 56 VBottom 2 WINDOW 3 26 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 10k SYMBOL LED 256 400 R0 SYMATTR InstName D2 SYMATTR Value LedR SYMATTR Description Diode SYMATTR Type diode TEXT 120 496 Left 2 !.tran 20ms TEXT 536 216 Left 2 !.model QBC557C PNP(IS = 5.826E-14 NF = 1.009 ISE = 3.884E-15 NE = 1.408 BF = 516.7 IKF = 0.08039 VAF = 26.03\n+NR = 1.006 ISC = 4.014E-14 NC = 1.313 BR = 12.45 IKR = 0.07238 VAR = 6.717 RB = 1 IRB = 1E-06 RBM = 1\n+RE = 0.5685 RC = 0.6257 XTB = 0 EG = 1.11 XTI = 3 CJE = 1.26E-11 VJE = 0.3809 MJE = 0.3545 TF = 5.233E-10\n+XTF = 4.339 VTF = 5.425 ITF = 0.1896 PTF = 0 CJC = 7.798E-12 VJC = 0.5897 MJC = 0.4569 XCJC = 0.6288\n+TR = 1E-32 CJS = 0 VJS = 0.75 MJS = 0.333 FC = 0.5729 Vceo=60 Icrating=100m TEXT 536 352 Left 2 !.MODEL QBC547C NPN( IS=4.679E-14 NF=1.01 ISE=2.642E-15 NE=1.581 BF=458.7 IKF=0.1371 VAF=52.64\n+NR=1.019 ISC=2.337E-15 NC=1.164 BR=11.57 IKR=0.1144 VAR=364.5 RB=1 IRB=1E-06 RBM=1 RE=0.2598\n+RC=1 XTB=0 EG=1.11 XTI=3 CJE=1.229E-11 VJE=0.5591 MJE=0.3385 TF=4.689E-10 XTF=160 VTF=2.828\n+ITF=0.8842 PTF=0 CJC=4.42E-12 VJC=0.1994 MJC=0.2782 XCJC=0.6193 TR=1E-32 CJS=0\n+VJS=0.75 MJS=0.333 FC=0.7936 Vceo=50 Icrating=100m TEXT 536 496 Left 2 !.MODEL LedR D(IS=93.2P RS=42M N=3.73 BV=4 IBV=10U CJO=2.97P VJ=.75\n+M=.333 TT=4.32U Iave=40m Vpk=4 type=LED)