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we use the triac BTA/BTB16 for 1 Phase Control of a Feeder ( 230 VAC, 50 Hz). attached the LTspice- Simulation. Question: why is the current not symetric ? Bernd

bmose.1
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LTSPICE ASC file
 
 
Version 4
SHEET 1 2784 1636
WIRE 1280 912 1232 912
WIRE 1520 912 1360 912
WIRE 1632 912 1520 912
WIRE 2032 912 1712 912
WIRE 2320 912 2032 912
WIRE 2576 912 2320 912
WIRE 2320 944 2320 912
WIRE 1520 1008 1520 912
WIRE 864 1072 768 1072
WIRE 1040 1072 944 1072
WIRE 1232 1072 1232 912
WIRE 1232 1072 1200 1072
WIRE 2320 1072 2320 1024
WIRE 768 1088 768 1072
WIRE 2032 1088 2032 912
WIRE 1040 1152 1008 1152
WIRE 1984 1152 1200 1152
WIRE 768 1184 768 1168
WIRE 1008 1184 1008 1152
WIRE 1008 1184 768 1184
WIRE 1520 1200 1520 1072
WIRE 2032 1200 2032 1152
WIRE 2032 1200 1520 1200
WIRE 2320 1200 2320 1136
WIRE 2320 1200 2032 1200
WIRE 1008 1248 1008 1184
WIRE 2032 1328 2032 1200
WIRE 2576 1424 2576 912
WIRE 2032 1552 2032 1408
WIRE 2576 1552 2576 1504
WIRE 2576 1552 2032 1552
WIRE 2576 1616 2576 1552
FLAG 768 1072 g2
FLAG 2576 1616 0
FLAG 2576 912 hot
FLAG 1008 1248 0
SYMBOL voltage 768 1072 R0
WINDOW 3 -104 134 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(0 5 5m 10u 10u 20u 10m)
SYMATTR InstName V3
SYMBOL Misc\\signal 2576 1408 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value SINE(0 325 50)
SYMBOL res 1376 896 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 500
SYMBOL Moc302x 1088 1088 R0
SYMATTR InstName X1
SYMBOL Misc\\TRIAC 2000 1088 R0
SYMATTR InstName U1
SYMATTR Value BTA16-600SW
SYMBOL res 848 1088 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 47
SYMBOL cap 2304 1072 R0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL res 2304 928 R0
SYMATTR InstName R3
SYMATTR Value 39
SYMBOL res 2016 1312 R0
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL cap 1504 1008 R0
SYMATTR InstName C2
SYMATTR Value 0.5µ
SYMBOL res 1728 896 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 250
TEXT 664 680 Left 2 !.tran 0 50m 0 10u
TEXT 664 576 Left 2 !.lib C:\\Program Files\\LTC\\LTspiceXVII\\lib\\sub\\st_ACST_ltspice.lib
TEXT 2344 840 Left 2 ;snubber circuit
TEXT 704 1264 Left 2 ;pulse definition \nName   Description    Units \nVoff      Initial value     V  \nVon      Pulsed value  V  \nTdelay  Delay             sec  \nTr          Rise time       sec  \nTf          Fall time         sec  \nTon       On time          sec  \nTperiod Period            sec  \nNcycles Number of cycles(Omit for free-running pulse function)
TEXT 1048 1240 Right 0 ;1
TEXT 1048 1328 Right 0 ;2
TEXT 1160 832 Left 2 ;adjust  OPTO-TRIAC current limit
TEXT 664 616 Left 2 !.lib C:\\Program Files\\LTC\\LTspiceXVII\\lib\\sub\\st_triacs.lib"
TEXT 1984 528 Left 2 ;see also: zero controlled triac_using LM555 and MOC3023.pdf
TEXT 672 736 Left 2 ;Note: original without dashed rectangles components
TEXT 1280 1304 Left 2 ;bei 50Hz\n=> der gesamte Querschnitt des Eisenkerns magnetisiert\n=> hohe Induktivität
TEXT 664 528 Left 2 !.lib C:\\Program Files\\LTC\\LTspiceXVII\\lib\\sub\\MOC302x.lib
LINE Normal 992 1008 976 1008
LINE Normal 992 1024 992 1008
LINE Normal 1008 1024 992 1024
LINE Normal 1008 1008 1008 1024
LINE Normal 1040 1008 1008 1008
RECTANGLE Normal 2432 1248 2224 880 2
RECTANGLE Normal 1872 1120 1456 864 2

😉 0693W000001pZO9QAM.png0693W000001pZN6QAM.png

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