Version 4 SHEET 1 1996 968 WIRE 224 -112 224 -144 WIRE -224 -64 -320 -64 WIRE -80 -64 -144 -64 WIRE -48 -64 -80 -64 WIRE 64 -64 32 -64 WIRE 160 -64 64 -64 WIRE -320 -32 -320 -64 WIRE -80 16 -80 -64 WIRE -48 16 -80 16 WIRE 64 16 64 -64 WIRE 64 16 16 16 WIRE 224 16 224 -16 WIRE 224 16 112 16 WIRE -320 64 -320 48 WIRE 224 64 224 16 WIRE 112 128 112 16 WIRE 224 192 224 144 WIRE 496 240 496 208 WIRE -240 288 -336 288 WIRE -48 288 -160 288 WIRE 112 288 112 192 WIRE 112 288 16 288 WIRE 224 288 224 256 WIRE 224 288 112 288 WIRE -336 320 -336 288 WIRE 224 368 224 288 WIRE 496 368 496 320 WIRE -336 416 -336 400 WIRE -256 544 -336 544 WIRE -64 544 -176 544 WIRE 224 544 224 432 WIRE 224 544 0 544 WIRE -336 576 -336 544 WIRE -336 672 -336 656 WIRE 224 752 224 544 WIRE -256 800 -352 800 WIRE -96 800 -176 800 WIRE -64 800 -96 800 WIRE 48 800 16 800 WIRE 160 800 48 800 WIRE -352 816 -352 800 WIRE 224 864 224 848 WIRE -96 880 -96 800 WIRE -48 880 -96 880 WIRE 48 880 48 800 WIRE 48 880 16 880 WIRE -352 912 -352 896 FLAG 224 -144 +V FLAG 496 208 +V FLAG -352 912 0 FLAG -336 672 0 FLAG 224 864 0 FLAG 496 368 0 FLAG -336 416 0 FLAG -320 64 0 SYMBOL pnp 160 -16 M180 SYMATTR InstName Q1 SYMATTR Value ZTX718 SYMBOL ind 208 48 R0 SYMATTR InstName L1 SYMATTR Value 47µ SYMBOL LED 208 192 R0 SYMATTR InstName D1 SYMATTR Value QTLP690C SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 128 192 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL voltage 496 224 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value {Vbatt} SYMBOL cap 208 368 R0 SYMATTR InstName C1 SYMATTR Value 10µ SYMBOL schottky 16 272 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D3 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL voltage -336 560 R0 WINDOW 3 -216 172 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value PULSE({Vbatt} 0 0 10n 10n {2*(Ton+Tturnoff) + 1u} {Tper}) SYMATTR InstName V2 SYMBOL voltage -352 800 R0 WINDOW 3 -186 151 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value PULSE(0 {Vbatt} 0 10n 10n {(Ton+Tturnoff)*2} {Tper}) SYMATTR InstName V3 SYMBOL res -64 -48 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL npn 160 752 R0 SYMATTR InstName Q2 SYMATTR Value ZTX618 SYMBOL res 32 784 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL schottky -64 528 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D4 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL voltage -336 304 R0 WINDOW 3 -217 164 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value PULSE(0 {Vbatt} 0 10n 10n {2*(Ton+Tturnoff)+1u} {Tper}) SYMATTR InstName V4 SYMBOL voltage -320 -48 R0 WINDOW 3 -186 151 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value PULSE({Vbatt} 0 0 10n 10n {Ton} {Tper}) SYMATTR InstName V5 SYMBOL schottky -48 0 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D5 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 16 864 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D6 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL res -128 -80 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 12 SYMBOL res -160 784 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 12 SYMBOL res -144 272 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 12 SYMBOL res -160 528 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 12 TEXT 440 496 Left 2 !.tran 0 2m 1m TEXT 440 432 Left 2 !.param Ton 1u TEXT 440 464 Left 2 !.param Vbatt 3 TEXT 440 528 Left 2 !.param Tper 500u TEXT 728 200 Left 2 !.MODEL ZTX618 NPN IS =5.611E-13 NF =1.0022 BF =480 IKF=4.6 VAF=51\n + ISE=1.73E-13 NE =1.4 NR =1.0002 BR =200 IKR=3 VAR=25 \n + ISC=7.3152E-13 NC =1.47 RB =0.032 RE =0.027 RC =0.025 \n + CJC=59E-12 MJC=0.2651 VJC=0.3051 CJE=216E-12 \n + TF =0.95E-9 TR =2.25E-9 TEXT 728 360 Left 2 !.MODEL ZTX718 PNP IS =6.8E-13 BF =480 IKF =2 VAF =23 \n + ISE=0.8E-13 NE =1.5567 NR =1.00 BR =70 IKR=0.4 \n + VAR=7 ISC=7.5E-14 NC =1.19 RB =0.085 RE =0.04\n + RC =0.045 CJC=70.02E-12 MJC=0.4685 VJC=0.7714 \n + CJE=203.6E-12 MJE=0.5029 VJE=0.9403 TF =0.71E-9 \n + TR =23.7E-9 TEXT 440 560 Left 2 !.param Tturnoff 1u