Version 4
SHEET 1 880 680
WIRE 112 112 48 112
WIRE 256 112 192 112
WIRE 272 112 256 112
WIRE 368 112 336 112
WIRE 416 112 368 112
WIRE 480 112 416 112
WIRE 512 112 480 112
WIRE 656 112 592 112
WIRE 48 160 48 112
WIRE 256 160 256 112
WIRE 368 160 368 112
WIRE 480 192 480 112
WIRE 656 192 656 112
WIRE 256 256 256 224
WIRE 272 256 256 256
WIRE 368 256 368 224
WIRE 368 256 336 256
WIRE 48 304 48 240
WIRE 368 304 368 256
WIRE 368 304 48 304
WIRE 256 352 256 256
WIRE 480 352 480 256
WIRE 480 352 256 352
WIRE 656 352 656 256
WIRE 656 352 480 352
WIRE 480 416 480 352
FLAG 480 416 0
FLAG 416 112 mp1
FLAG 656 112 mp2
SYMBOL voltage 48 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 18 105 Left 2
SYMATTR Value SINE(0 325 50)
SYMATTR InstName V1
SYMBOL diode 272 128 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 384 224 R180
WINDOW 0 24 64 Left 2
WINDOW 3 -68 63 Left 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL diode 272 272 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode 272 224 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL Misc\\EuropeanResistor 208 96 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 100K
SYMBOL Misc\\EuropeanPolcap 464 192 R0
SYMATTR InstName C1
SYMATTR Value 10µ
SYMBOL Misc\\EuropeanResistor 608 96 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL diode 640 192 R0
SYMATTR InstName D5
SYMATTR Value BRT23F
TEXT 72 384 Left 2 !.tran 0 0.6 0.55
TEXT 328 40 Left 2 !.model BRT23F D(Ron=22 Roff=1G Vfwd=1.5)
TEXT 184 8 Left 2 ;Nulldurchgangsschalter mit BRT23F