Version 4 SHEET 1 1284 696 WIRE -32 -144 -64 -144 WIRE 112 -144 -32 -144 WIRE 432 -144 112 -144 WIRE 608 -144 432 -144 WIRE -64 -112 -64 -144 WIRE 432 -112 432 -144 WIRE 608 -112 608 -144 WIRE 112 -96 112 -144 WIRE -64 0 -64 -32 WIRE 432 0 432 -32 WIRE 464 0 432 0 WIRE 608 0 608 -48 WIRE 608 0 464 0 WIRE 432 16 432 0 WIRE 112 64 112 -16 WIRE 144 64 112 64 WIRE 192 64 144 64 WIRE 304 64 272 64 WIRE 352 64 304 64 WIRE 368 64 352 64 WIRE 112 96 112 64 WIRE 304 96 304 64 WIRE -208 144 -272 144 WIRE -144 144 -208 144 WIRE -16 144 -64 144 WIRE 32 144 -16 144 WIRE 48 144 32 144 WIRE 432 144 432 112 WIRE 464 144 432 144 WIRE 496 144 464 144 WIRE 608 144 576 144 WIRE -208 176 -208 144 WIRE -16 176 -16 144 WIRE 432 176 432 144 WIRE 304 192 304 160 WIRE 112 224 112 192 WIRE -208 272 -208 240 WIRE -16 272 -16 240 WIRE 432 288 432 256 WIRE -272 336 -272 144 WIRE 608 336 608 144 WIRE 608 336 -272 336 FLAG 304 192 0 FLAG 432 288 0 FLAG -16 272 0 FLAG -208 272 0 FLAG 112 224 0 FLAG -64 0 0 FLAG 144 64 c1 FLAG 352 64 b2 FLAG 464 0 c2 FLAG 32 144 b1 FLAG 464 144 e2 FLAG -32 -144 +9V SYMBOL npn 48 96 R0 SYMATTR InstName Q1 SYMATTR Value BC547C SYMBOL npn 368 16 R0 SYMATTR InstName Q2 SYMATTR Value BC547C SYMBOL diode 592 -112 R0 SYMATTR InstName D1 SYMATTR Value LED SYMBOL Misc\\battery -64 -128 R0 SYMATTR InstName V2 SYMATTR Value 9 SYMBOL Misc\\EuropeanPolcap -224 176 R0 SYMATTR InstName C5 SYMATTR Value 100µ SYMBOL Misc\\EuropeanPolcap -32 176 R0 SYMATTR InstName C1 SYMATTR Value 100µ SYMBOL Misc\\EuropeanPolcap 288 96 R0 SYMATTR InstName C2 SYMATTR Value 100µ SYMBOL Misc\\EuropeanResistor 416 160 R0 SYMATTR InstName R7 SYMATTR Value 68 SYMBOL Misc\\EuropeanResistor 176 80 R270 WINDOW 0 27 56 VTop 0 WINDOW 3 5 56 VBottom 0 SYMATTR InstName R8 SYMATTR Value 22k SYMBOL Misc\\EuropeanResistor 96 -112 R0 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL Misc\\EuropeanResistor 480 160 R270 WINDOW 0 27 56 VTop 0 WINDOW 3 5 56 VBottom 0 SYMATTR InstName R2 SYMATTR Value 22k SYMBOL Misc\\EuropeanResistor -160 160 R270 WINDOW 0 27 56 VTop 0 WINDOW 3 5 56 VBottom 0 SYMATTR InstName R3 SYMATTR Value 22k SYMBOL Misc\\EuropeanResistor 416 -128 R0 SYMATTR InstName R4 SYMATTR Value 1k TEXT -272 -304 Left 0 !.tran 0 50 0 10m startup TEXT 816 -240 Left 0 !.MODEL LED D(Is=1e-22 Rs=1 N=1.5) TEXT -272 -272 Left 0 !.options plotwinsize=0 TEXT 40 -360 Left 0 ;Soft Blinking LED\nhttp://www.b-kainka.de/bastel108.htm \nAny transistor with a high current gain (beta > 200) will be OK.\nThis oscillator runs from any battery voltage down to 3V. TEXT 816 -208 Left 0 !.MODEL BC547C NPN( \n+ IS=4.679E-14 NF=1.01\n+ ISE=2.642E-15 NE=1.581\n+ BF=458.7 IKF=0.1371\n+ VAF=52.64 NR=1.019\n+ ISC=2.337E-14 NC=1.164\n+ BR=11.57 IKR=0.1144\n+ VAR=364.5 RB=1\n+ IRB=1E-06 RBM=1\n+ RE=0.2598 RC=1\n+ XTB=0 EG=1.11\n+ XTI=3 CJE=1.229E-11\n+ VJE=0.5591 MJE=0.3385\n+ TF=4.689E-10 XTF=160\n+ VTF=2.828 ITF=0.8842\n+ PTF=0 CJC=4.42E-12\n+ VJC=0.1994 MJC=0.2782\n+ XCJC=0.6193 TR=1E-32\n+ CJS=0 VJS=0.75\n+ MJS=0.333 FC=0.7936 ) TEXT -272 -352 Left 0 ;Simulation TEXT 816 -280 Left 0 ;Models RECTANGLE Normal 0 -248 -288 -376 RECTANGLE Normal 1216 352 784 -304