Version 4 SHEET 1 1392 680 WIRE -592 112 -592 -160 WIRE -592 192 -592 112 WIRE -592 336 -592 256 WIRE -512 112 -592 112 WIRE -512 176 -512 112 WIRE -512 336 -592 336 WIRE -512 336 -512 240 WIRE -480 336 -512 336 WIRE -480 336 -480 -80 WIRE -464 208 -464 -16 WIRE -448 160 -448 48 WIRE -432 -80 -480 -80 WIRE -432 -16 -464 -16 WIRE -432 48 -448 48 WIRE -432 112 -512 112 WIRE -368 160 -448 160 WIRE -224 -160 -592 -160 WIRE -192 -16 -208 -16 WIRE -192 -16 -192 -32 WIRE -192 48 -208 48 WIRE -192 96 -192 48 WIRE -176 -160 -224 -160 WIRE -176 -80 -208 -80 WIRE -176 -80 -176 -160 WIRE -176 112 -208 112 WIRE -176 240 -176 112 WIRE -176 256 -176 240 WIRE -176 336 -480 336 WIRE -176 336 -176 320 WIRE -160 240 -176 240 WIRE -128 -160 -176 -160 WIRE -128 -144 -128 -160 WIRE -128 -32 -192 -32 WIRE -128 -32 -128 -64 WIRE -128 0 -128 -32 WIRE -128 96 -192 96 WIRE -128 96 -128 80 WIRE -48 -32 -128 -32 WIRE -48 16 -48 -32 WIRE -48 96 -128 96 WIRE -48 96 -48 80 WIRE -48 208 -464 208 WIRE -48 208 -48 96 WIRE -48 256 -48 208 WIRE -48 336 -176 336 WIRE -48 336 -48 320 WIRE 16 -32 -48 -32 WIRE 64 160 -368 160 WIRE 80 -160 -128 -160 WIRE 144 -32 96 -32 WIRE 256 -160 160 -160 WIRE 256 -112 256 -160 WIRE 256 -32 208 -32 WIRE 256 -32 256 -112 WIRE 256 208 256 -32 WIRE 256 256 256 208 WIRE 256 336 -48 336 WIRE 256 336 256 320 WIRE 320 -112 256 -112 WIRE 320 -32 256 -32 WIRE 352 208 256 208 WIRE 352 240 352 208 WIRE 352 336 256 336 WIRE 352 336 352 320 WIRE 448 -112 400 -112 WIRE 448 -32 384 -32 WIRE 448 -32 448 -112 WIRE 448 -16 448 -32 WIRE 448 64 448 48 WIRE 448 192 448 144 WIRE 448 224 448 192 WIRE 448 336 352 336 WIRE 448 336 448 304 WIRE 528 160 144 160 WIRE 528 208 528 160 WIRE 528 336 448 336 WIRE 528 336 528 272 WIRE 560 -160 256 -160 WIRE 576 160 528 160 WIRE 576 208 576 160 WIRE 576 336 528 336 WIRE 576 336 576 288 WIRE 608 160 576 160 WIRE 672 64 672 16 WIRE 672 96 672 64 WIRE 672 112 672 96 WIRE 672 336 576 336 WIRE 672 336 672 208 WIRE 688 -112 448 -112 WIRE 688 -64 688 -112 WIRE 688 16 672 16 WIRE 704 64 672 64 WIRE 752 -64 752 -112 WIRE 752 96 672 96 WIRE 752 128 752 96 WIRE 752 224 752 128 WIRE 752 336 672 336 WIRE 752 336 752 288 WIRE 784 -112 752 -112 WIRE 784 64 768 64 WIRE 784 64 784 -112 WIRE 816 -112 784 -112 WIRE 816 -64 816 -112 WIRE 816 16 752 16 WIRE 816 16 816 0 WIRE 816 224 816 16 WIRE 816 336 752 336 WIRE 816 336 816 224 WIRE 848 -112 816 -112 WIRE 864 224 816 224 WIRE 960 -112 912 -112 WIRE 976 -112 960 -112 WIRE 976 32 976 -112 WIRE 976 160 976 112 WIRE 976 224 944 224 WIRE 976 224 976 160 WIRE 1008 -112 976 -112 WIRE 1008 -80 1008 -112 WIRE 1008 16 816 16 WIRE 1008 16 1008 -16 WIRE 1008 160 976 160 WIRE 1056 -112 1008 -112 WIRE 1072 16 1008 16 WIRE 1072 112 1072 16 WIRE 1072 288 1024 288 WIRE 1072 288 1072 208 WIRE 1184 -112 1136 -112 WIRE 1184 -80 1184 -112 WIRE 1184 16 1072 16 WIRE 1184 16 1184 -16 WIRE 1184 48 1184 16 WIRE 1232 -112 1184 -112 WIRE 1280 -160 624 -160 WIRE 1280 -112 1232 -112 WIRE 1280 -112 1280 -160 WIRE 1280 -96 1280 -112 WIRE 1280 16 1184 16 WIRE 1280 16 1280 -16 FLAG 1232 -112 Out FLAG 752 128 High FLAG 960 -112 OutRect FLAG -224 -160 Alim555 FLAG 1184 48 0 FLAG -368 160 Out555 FLAG 976 160 beQctrl FLAG 1024 288 Pwm1 IOPIN 1024 288 Out FLAG -160 240 Pwm1 IOPIN -160 240 In FLAG -48 -32 Pwm2 FLAG 256 -160 Sense FLAG 448 192 Pin SYMBOL Robertugo\\555_ALL -272 32 R0 WINDOW 38 -79 78 Left 0 SYMATTR InstName U1 SYMBOL cap -64 256 R0 WINDOW 0 -33 29 Left 0 WINDOW 3 -37 54 Left 0 SYMATTR InstName Ct SYMATTR Value 820p SYMBOL res -112 96 R180 WINDOW 0 28 84 Left 0 WINDOW 3 30 48 Left 0 SYMATTR InstName Rtoff SYMATTR Value 47k SYMBOL diode -32 16 M0 WINDOW 3 22 60 Left 0 SYMATTR Value 1N914 SYMATTR InstName Dton SYMBOL res 112 -48 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName RsZ2 SYMATTR Value 150 SYMBOL diode 544 272 R180 WINDOW 0 44 -56 VRight 0 WINDOW 3 42 37 VRight 0 SYMATTR InstName DretInv SYMATTR Value 1N914 SYMBOL diode 624 -176 R90 WINDOW 0 16 113 VBottom 0 WINDOW 3 -12 -38 VTop 0 SYMATTR InstName Dalim SYMATTR Value MURS120 SYMBOL diode 432 48 M180 WINDOW 0 -45 64 VLeft 0 WINDOW 3 -16 78 VLeft 0 SYMATTR InstName Dpol SYMATTR Value MBRS1100 SYMBOL voltage 448 208 M0 WINDOW 0 34 22 VTop 0 WINDOW 3 -2 73 Bottom 0 WINDOW 123 41 81 Top 0 SYMATTR InstName VLocom SYMATTR Value 80v SYMATTR Value2 AC 1 SYMATTR SpiceLine Rser=1m SYMBOL res 416 -128 R90 WINDOW 0 -10 126 VTop 0 WINDOW 3 -12 -9 VTop 0 SYMATTR InstName RDis SYMATTR Value 22k SYMATTR SpiceLine tol=10 pwr=5 SYMBOL res 160 144 R90 WINDOW 0 1 96 VRight 0 WINDOW 3 4 -19 VRight 0 SYMATTR InstName Rbuf1 SYMATTR Value 47 SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL res 560 192 R0 WINDOW 0 96 50 Right 0 WINDOW 3 56 87 Right 0 SYMATTR InstName Rbmin SYMATTR Value 22 SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL polcap 1024 -80 M0 WINDOW 3 -9 48 Right 0 WINDOW 0 -23 24 Right 0 SYMATTR Value 220µ SYMATTR InstName Cf1 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=16 Irms=2.4 Rser=0.05 MTBF=0 Lser=2.1p ppPkg=1 SYMBOL polcap 1200 -80 M0 WINDOW 3 90 46 Right 0 WINDOW 0 86 25 Right 0 SYMATTR Value 220µ SYMATTR InstName Cf2 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=16 Irms=2.4 Rser=0.05 MTBF=0 Lser=2.1p ppPkg=1 SYMBOL ind 1152 -96 M270 WINDOW 0 62 10 VBottom 0 WINDOW 3 62 65 VBottom 0 SYMATTR InstName Lf SYMATTR Value 100µ SYMATTR SpiceLine Ipk=10 Rser=0.001 Rpar=0 Cpar=0 SYMBOL polcap 384 -48 R90 WINDOW 0 35 62 VTop 0 WINDOW 3 -31 74 VTop 0 SYMATTR InstName Cstart SYMATTR Value 47µ SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=100 Irms=210m Rser=0.37 MTBF=2000 Lser=0 mfg="Nichicon" pn="UPR2A470MPH" type="Al electrolytic" ppPkg=1 SYMBOL cap 736 224 R0 WINDOW 0 13 3 Right 0 WINDOW 3 -9 32 Right 0 SYMATTR InstName Csnub SYMATTR Value 33n SYMBOL ind2 672 -80 R0 WINDOW 0 -3 64 VRight 0 WINDOW 3 -7 -6 VRight 0 SYMATTR InstName LP SYMATTR Value 1m1 SYMATTR Type ind SYMATTR SpiceLine Rser=1 Rpar=1430 Cpar=5p SYMBOL ind2 768 32 R180 WINDOW 0 -4 32 VRight 0 WINDOW 3 -4 91 VRight 0 SYMATTR InstName LS SYMATTR Value 50µ SYMATTR Type ind SYMATTR SpiceLine Rser=0.01 Rpar=110 SYMBOL diode 848 -96 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName Drect SYMATTR Value MBR735 SYMBOL npn3 608 112 R0 WINDOW 3 31 59 Left 0 WINDOW 0 34 34 Left 0 SYMATTR Value BU508 SYMATTR InstName Qout SYMBOL cap 800 -64 R0 WINDOW 0 97 30 Right 0 WINDOW 3 89 58 Right 0 SYMATTR InstName Csint SYMATTR Value 100n SYMBOL res 432 48 R0 WINDOW 0 -47 65 Left 0 WINDOW 3 -47 90 Left 0 SYMATTR InstName Rlim SYMATTR Value 2R2 SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL cap 768 48 R90 WINDOW 0 15 61 VBottom 0 WINDOW 3 -10 5 VTop 0 SYMATTR InstName Cps SYMATTR Value 10p SYMBOL res 1264 -112 R0 WINDOW 0 -29 27 Left 0 WINDOW 3 -65 107 Left 0 SYMATTR InstName RL SYMATTR Value {Rload} SYMBOL polcap 240 256 R0 WINDOW 3 5 56 Right 0 WINDOW 0 -8 34 Right 0 SYMATTR Value 220µ SYMATTR InstName Cf3 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=16 Irms=2.4 Rser=0.05 MTBF=0 Lser=2.1p ppPkg=1 SYMBOL res 336 224 R0 WINDOW 0 7 28 Right 0 WINDOW 3 -3 65 Right 0 SYMATTR InstName R_uFan SYMATTR Value 150 SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL zener -496 240 R180 WINDOW 0 49 -17 VRight 0 WINDOW 3 -236 -10 Invisible 0 SYMATTR InstName Dz+10v555 SYMATTR Value BZX84C10L SYMBOL res 176 -176 R90 WINDOW 0 14 139 VBottom 0 WINDOW 3 -12 4 VTop 0 SYMATTR InstName RsZ1 SYMATTR Value 56 SYMBOL zener 144 -16 R270 WINDOW 0 36 32 VTop 0 WINDOW 3 -4 32 VBottom 0 SYMATTR InstName DzPwm2 SYMATTR Value BZX84C6V2L SYMBOL polcap -608 192 R0 WINDOW 3 59 126 Right 0 WINDOW 0 62 100 Right 0 SYMATTR Value .1µ SYMATTR InstName Cf4 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=16 Irms=2.4 Rser=0.05 MTBF=0 Lser=2.1p ppPkg=1 SYMBOL cap -192 256 R0 WINDOW 0 -41 28 Left 0 WINDOW 3 -43 52 Left 0 SYMATTR InstName Cf5 SYMATTR Value 10n SYMBOL res -144 -160 R0 WINDOW 0 36 46 Left 0 SYMATTR InstName Rton SYMATTR Value 22K SYMBOL npn 1008 208 M180 WINDOW 0 -8 107 Left 0 WINDOW 3 28 47 Left 0 SYMATTR InstName QCtrl SYMATTR Value BC547A SYMBOL res 960 208 R90 WINDOW 0 -15 33 VRight 0 WINDOW 3 55 39 VRight 0 SYMATTR InstName Rd1 SYMATTR Value 1K SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL res 992 128 R180 WINDOW 0 79 72 Right 0 WINDOW 3 79 46 Right 0 SYMATTR InstName Rd2 SYMATTR Value 20K SYMATTR SpiceLine tol=1 pwr=0.1 TEXT -570 -176 Left 0 !.tran 0 8m 0 startup TEXT 720 -120 VRight 0 !K1 LP LS .85 TEXT 336 -64 Left 0 ;x100V TEXT 680 280 Left 0 ;x250V TEXT 1200 32 Left 0 ;2R7min TEXT 456 -96 Left 0 ;Cheap & dirty(some\nfreq var) for 80V\n(Locomotive) to\n12V x 3A PWM\n Flyback. If short-\n circuit autostop!\n Ef(35W)>70%\n &Full NE555\n bipolar use. TEXT 744 -176 Left 0 ;.step param val 80n 120n 20n TEXT 1088 -176 Left 0 ;.option noopiter TEXT 960 112 Right 0 ;(20K) TEXT 848 328 Left 0 !.step param Rload list 4 6 12 10k TEXT -576 -296 Left 0 !.meas tran Pin avg(V(Pin)*I(VLocom)) from td=6m\n.meas tran Pout avg(V(Out)*I(RL)) from td=6m\n.meas tran Eff% Param (Pout/Pin)*-100\n.meas tran PdQ avg(V(High)*Ic(Qout)+V(N003)*Ib(Qout)) from td=6m TEXT 152 -328 Left 0 !.meas tran ta FIND time WHEN V(out555)=5 td=6m rise=1\n.meas tran tb FIND time WHEN V(out555)=5 td=6m rise=11\n.meas tran Frec PARAM 10/(tb-ta)\n.Meas tran Tc FIND time WHEN V(Out555)=5 td=6m fall=1\n.Meas tran Td FIND time WHEN V(Out555)=5 td=6m fall=2 TEXT 760 -312 Left 0 !.Meas tran T1 Param (Tc-Ta)\n.Meas tran T2 Param (Td-Ta)\n.Meas tran Ton Param If (T1>0, T1, T2)\n.Meas tran Duty% Param Ton*Frec*100