Help Importing netlist into Multisim - Page 1
Forum section: electronics / general

author: coldfiremc
author_rank: Regular Contributor
timestamp: July 18, 2018, 05:15:39 am
content: HiI'm trying to import old netlists for spice 3 into multisim (are samples from an old book). However In multisim14.1, I get "Main Circuit Not found in SPICE netlist". The netlist is the following (is an Op. Amp. model)EXAMPLE 12.3 SMALL SIGNAL GAIN OF 741 OP AMPVCC 1 0 DC 15VEE 0 13 DC 15VID 4 28 AC 1UVVOS 5 28 DC .000321VIC 5 0 DC 0Q1 2 4 6 M1Q2 2 5 7 M1Q3 8 3 6 M2Q4 9 3 7 M2Q5 8 10 11 M1Q6 9 10 12 M1Q7 1 8 10 M1Q8 2 2 1 M2Q9 3 2 1 M2Q10 3 15 14 M1Q11 15 15 13 M1Q12 16 16 1 M2Q131 17 16 1 M2 0.75Q132 22 16 1 M2 0.25Q14 1 22 25 M1 3Q15 22 25 26 M1Q16 1 18 19 M1Q17 17 19 20 M1Q18 22 22 23 M1Q19 22 23 24 M1Q20 13 24 27 M2 3Q21 21 27 26 M2Q221 13 17 24 M2Q222 13 17 18 M2Q23 18 21 13 M1Q24 21 21 13 M1R1 11 13 1KR2 12 13 1KR3 10 13 50KR4 14 13 5KR5 16 15 40KR12 9 18 300R6 25 26 27R7 26 27 22R8 20 13 100R9 19 13 50KR10 23 24 50KR11 21 13 50KR13 26 0 1KC1 17 18 30PF.MODEL M1 NPN BF = 200 IS = 2E-15 VAF = 150 RB = 200+ BR = 2 CJE = 1PF CJC = 1PF.MODEL M2 PNP BF = 50 IS = 1E-14 VAF = 50 RB = 100+ BR = 3+ CJE = 1PF CJC = 1PF.TF V(26) VIC.AC DEC 10 .1 5MEG.PRINT AC VM(18), VP(18), VM(17), VP(17), VM(26), VP(26).OP.PROBE.ENDHope you can help me. I know a little bit of SPICE sintax, and this appears to be correct. However, I don't know what is multisim expecting.regards

author: T3sl4co1l
author_rank: Super Contributor
timestamp: July 18, 2018, 04:25:14 pm
content: I never had much luck with the import feature. That it exists at all, is remarkable; that it doesn't work very well, figures.You're better off hand placing components, assigning pins to nets, and cleaning up the schematic. You can compare netlist by refreshing and copying the circuit netlist, stripping out comments with a script (Multisim formats each component with generous spacing and a little metadata), and diffing against the above netlist.Tim

author: coldfiremc
author_rank: Regular Contributor
timestamp: July 20, 2018, 04:34:47 am
content: Somewhat succeed to import, but i have 2 errors, pretty strange errors.Multisim is unable to create connector 13 and 18 from that netlistCode:* NI Multisim to SPICE Netlist Export* Generated by: Alejandro* Wed, Jul 18, 2018 00:47:41VCC 1 0 DC 15VEE 0 13 DC 15VID 4 28 AC 1UVVOS 5 28 DC .000321VIC 5 0 DC 0Q1 2 4 6 M1Q2 2 5 7 M1Q3 8 3 6 M2Q4 9 3 7 M2Q5 8 10 11 M1Q6 9 10 12 M1Q7 1 8 10 M1Q8 2 2 1 M2Q9 3 2 1 M2Q10 3 15 14 M1Q11 15 15 13 M1Q12 16 16 1 M2Q131 17 16 1 M2 0.75Q132 22 16 1 M2 0.25Q14 1 22 25 M1 3Q15 22 25 26 M1Q16 1 18 19 M1Q17 17 19 20 M1Q18 22 22 23 M1Q19 22 23 24 M1Q20 13 24 27 M2 3Q21 21 27 26 M2Q221 13 17 24 M2Q222 13 17 18 M2Q23 18 21 13 M1Q24 21 21 13 M1R1 11 13 1KR2 12 13 1KR3 10 13 50KR4 14 13 5KR5 16 15 40KR12 9 18 300R6 25 26 27R7 26 27 22R8 20 13 100R9 19 13 50KR10 23 24 50KR11 21 13 50KR13 26 0 1KC1 17 18 30PF.MODEL M1 NPN BF = 200 IS = 2E-15 VAF = 150 RB = 200+ BR = 2 CJE = 1PF CJC = 1PF.MODEL M2 PNP BF = 50 IS = 1E-14 VAF = 50 RB = 100+ BR = 3 CJE = 1PF CJC = 1PF.TF V(26) VIC.AC DEC 10 .1 5MEG.PRINT AC VM(18), VP(18), VM(17), VP(17), VM(26), VP(26).OP.PROBE.ENDI wonder why is unable to do it. I will try to connect them manuallly and then to simulate

author: coldfiremc
author_rank: Regular Contributor
timestamp: July 20, 2018, 05:22:44 am
content: Ok, this is weird: Multisim crashes or changes results randomly. Is this a bug... or i'm asking for a too complex netlist?