Version 4
SHEET 1 1724 680
WIRE 112 -32 80 -32
WIRE 256 -32 192 -32
WIRE 256 0 256 -32
WIRE 0 80 -32 80
WIRE 112 80 80 80
WIRE 112 96 112 80
WIRE 256 112 256 80
WIRE 464 112 256 112
WIRE 592 112 528 112
WIRE 640 112 592 112
WIRE 768 112 720 112
WIRE 816 112 768 112
WIRE 944 112 896 112
WIRE 1040 112 944 112
WIRE 1072 112 1040 112
WIRE 256 128 256 112
WIRE -320 160 -800 160
WIRE -320 176 -384 176
WIRE -800 192 -800 160
WIRE -384 192 -384 176
WIRE -320 192 -384 192
WIRE 768 192 768 112
WIRE 832 192 768 192
WIRE 944 192 944 112
WIRE 944 192 896 192
WIRE 1072 192 1072 112
WIRE -560 208 -688 208
WIRE -528 208 -560 208
WIRE -432 208 -448 208
WIRE -384 208 -384 192
WIRE -384 208 -432 208
WIRE -320 208 -384 208
WIRE -176 208 -256 208
WIRE -80 208 -112 208
WIRE 48 208 -16 208
WIRE 112 208 112 176
WIRE 112 208 48 208
WIRE 208 208 112 208
WIRE -384 224 -384 208
WIRE -320 224 -384 224
WIRE -688 240 -688 208
WIRE 48 240 48 208
WIRE 112 240 112 208
WIRE 592 240 592 112
WIRE 768 240 768 192
WIRE 944 240 944 192
WIRE -384 256 -384 224
WIRE -560 288 -560 208
WIRE -528 288 -560 288
WIRE -432 288 -432 208
WIRE -432 288 -464 288
WIRE -800 352 -800 272
WIRE -688 352 -688 320
WIRE -688 352 -800 352
WIRE -384 352 -384 320
WIRE -384 352 -688 352
WIRE -304 352 -304 224
WIRE -304 352 -384 352
WIRE -176 352 -176 224
WIRE -176 352 -304 352
WIRE 112 352 112 320
WIRE 112 352 -176 352
WIRE 256 352 256 224
WIRE 256 352 112 352
WIRE 384 352 384 304
WIRE 384 352 256 352
WIRE 592 352 592 304
WIRE 592 352 384 352
WIRE 768 352 768 304
WIRE 768 352 592 352
WIRE 944 352 944 304
WIRE 944 352 768 352
WIRE 1072 352 1072 272
WIRE 1072 352 944 352
WIRE -800 368 -800 352
WIRE -560 416 -560 288
WIRE 48 416 48 320
WIRE 48 416 -560 416
FLAG 80 -32 0
FLAG -800 368 0
FLAG 1040 112 out
FLAG -32 80 0
SYMBOL nmos 208 128 R0
WINDOW 0 -42 62 Left 2
WINDOW 3 -40 104 Left 2
SYMATTR InstName M1
SYMATTR Value IRF510
SYMBOL ind2 272 -16 M0
SYMATTR InstName L1
SYMATTR Value 590n
SYMATTR Type ind
SYMATTR SpiceLine Rser=40m Rpar=50k Cpar=1p
SYMBOL cap 528 96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL res 1056 176 R0
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL voltage 208 -32 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V_Batt
SYMATTR Value 12V
SYMBOL cap -16 192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 100n
SYMBOL res 64 224 M0
SYMATTR InstName R2
SYMATTR Value 1.8k
SYMBOL voltage -800 176 M0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 40 37 Left 2
WINDOW 3 -130 3 Left 2
SYMATTR InstName V_DDS
SYMATTR Value SINE(2.5V 0.5V 14Meg)
SYMBOL Digital\\buf1 -176 144 R0
WINDOW 0 -1 27 Left 2
WINDOW 3 -3 -6 Invisible 2
SYMATTR InstName A1
SYMATTR Value vhigh=5 vlow=0 rout=1
SYMBOL voltage 384 208 M0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 47 71 Left 2
WINDOW 3 -174 99 Left 2
SYMATTR Value2 AC 2
SYMATTR InstName V4
SYMATTR Value SINE(3V 0.5V 14Meg)
SYMBOL res 368 128 R0
SYMATTR InstName R3
SYMATTR Value 15
SYMBOL Digital\\and -288 128 R0
WINDOW 0 -31 15 Left 2
WINDOW 3 -125 -14 Invisible 2
SYMATTR InstName A2
SYMATTR Value vhigh=5 vlow=0
SYMBOL voltage -688 224 M0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 -96 74 Left 2
WINDOW 3 -94 105 Left 2
SYMATTR InstName V_Tx
SYMATTR Value PULSE(0 5 10u 100n 100n 800u 1m)
SYMBOL cap 576 240 R0
SYMATTR InstName C3
SYMATTR Value 1.5n
SYMBOL cap 752 240 R0
SYMATTR InstName C4
SYMATTR Value 1.2n
SYMBOL cap 928 240 R0
SYMATTR InstName C5
SYMATTR Value 1n
SYMBOL ind2 624 128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L3
SYMATTR Value 260n
SYMATTR Type ind
SYMATTR SpiceLine Rser=20m Rpar=50k Cpar=0.5p
SYMBOL ind2 800 128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L4
SYMATTR Value 255n
SYMATTR Type ind
SYMATTR SpiceLine Rser=20m Rpar=50k Cpar=0.5p
SYMBOL cap 896 176 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value 120p
SYMBOL res -432 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 2.2k
SYMBOL diode -528 304 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL cap -400 256 R0
SYMATTR InstName C8
SYMATTR Value 100n
SYMBOL res 96 224 R0
SYMATTR InstName R5
SYMATTR Value 3.3k
SYMBOL res 96 80 R0
SYMATTR InstName R6
SYMATTR Value 3.3k
SYMBOL voltage 96 80 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 5V
TEXT -800 -40 Left 2 !.tran 0 1m 0 500p
TEXT -800 -8 Left 2 !;ac dec 1k 1Meg 100Meg
TEXT -216 144 Left 2 ;8 x 74HC240
TEXT -368 88 Left 2 ;Nand, z.B.\n1 x 74HC00
TEXT 288 -24 Left 2 ;T50-2\n11Wdg.
TEXT 632 48 Left 2 ;2 x T50-2, je 7 Wdg.