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Date
Re: Mechanical switch
Hello David, You could make a bouncing switch with a V-source (PWL) as the control voltage for a switch SW. You can see a "typical" bouncing switch on the top-left picture.
By Helmut Sennewald · #89983 ·
Re: Need help to design a transimpedance amplifier
You have an impossible set of criteria for a linear TIA. You ask for 100mV per 100nA. 100uA is 1000 times larger than 100na. So, your spec would have 1000 times 100mV out with 100uA in, or 100V. You
By Jim Wagner · #89982 ·
Re: Input impedance of an energy saving fluorescent lamp (CFL) 21W
http://ltwiki.org/?title=Components_Library_and_Circuits CFL Circuit 13 Watt 120 VAC Compact Fluorescent Bordodynov. 02.08.2016, 19:04, "Jerry Lee Marcel jerryleemarcel@... [LTspice]"
By §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó · #89981 ·
Re: Input impedance of an energy saving fluorescent lamp (CFL) 21W
CFL's are very non-linear, in fact exhibit negative resistance. There are a few Spice models on the internet, you may have to adapt them for LTspice. --- L'absence de virus dans ce courrier
By Jerry Lee Marcel · #89978 ·
Re: LTspice IV (NOT RESPONDING)
It's because your computer is being slowed down. Maybe you need to run a tune-up application. Just emptying some files, like Temp and Recycle Bin might help. Defrag the hard drive, too, if you can
By John Woodgate <jmw1937@...> · #89985 ·
Mechanical switch
Where could I find a model of a real mechanical switch, including sparking during opening? I'm interested in spark gaps in general, but particularly a switch (voltage controlled ideally) that behaves
By david vanhorn · #89979 ·
Input impedance of an energy saving fluorescent lamp (CFL) 21W
I am attempting to simulate a loaded inverter using the equivalent input impedance of the CF lamp as the load. Is there anybody in the group who might have an idea as to what a typical value for
By Michael Peter Kiwanuka · #89977 ·
LTspice IV (NOT RESPONDING)
I keep getting LTspice IV (NOT RESPONDING), My thinking is that LTspice is busy loading the info it wants or my computer is busy, but it only happens with LTspice, Computer is Toshiba Laptop running
By kinarfi · #89976 ·
Unable to find InstName attribute in LTSpice for mac
I'm trying to create a symbol in LTSpice for mac. I've to place the InstName attribute but I'm doing right click -> view -> Attribute table and it's not there
By Alessandro Cardelli · #89975 ·
Re: libraries for electronic components
.ummm, the best suggestions starting out is to Google the data sheets and see if those devices match up any of the circuits that have already been modeled around here. Have you designed and run a
By William · #89974 ·
Re: Modelling an optoisolator
Helmut, Never mind! I found the problem. You had a comma in your table instead of a period (4,9 instead of 4.9). It works now.
By skip@... · #89973 ·
Re: Modelling an optoisolator
Helmut, I tried your suggestion of using an arbitrary behavioral voltage source (Bv) with the table you proposed (V=table(I(D1), 0,0, 1m,1, 10m,4.9, 100m, 4.95), and I got the following error: <<<>>>
By skip@... · #89972 ·
Re: Modelling an optoisolator
Hello, May I ask a question ? If represent the transfer function in math equation, what would be the variables which is depended to vary the output ? It seems the variable is Iin, but how to represent
By ericsson.sunshine@... · #89971 ·
Re: course of HOWTO build models like (sanken) STR-A6100
Hi, eetech00: Thank you. That's really a good news. I had ran the LLC topology in some simulator (NOT SPICE) for control. But it doesn't care very detail values of those hardware parameters. So far I
By ericsson.sunshine@... · #89970 ·
Re: Looking for a IDT74CBTLV3253 model.
Hello Gunoi Nare There are examples from Helmut with the A device counter in https://groups.yahoo.com/neo/groups/LTspice/files/%20Tut/Digital%20A-Devices/ Yahoo! Groups
By @theeten2 · #89969 ·
Re: Looking for a IDT74CBTLV3253 model.
Hello Gunoi Nare You are using an undocumented but officially approved for public use Look at http://ltwiki.org/?title=Undocumented_LTspice http://ltwiki.org/?title=Undocumented_LTspice and search for
By @theeten2 · #89968 ·
Re: Modelling an optoisolator
Hello, You could use a Bi or a Bv source with a table-function. D1 is the diode of the optocoupler in this example. Bi I = table(I(D1), 0,0, 1m,0,5m, 10m,5m, 100m,20m) Bv V = table(I(D1), 0,0, 1m,1,
By Helmut Sennewald · #89967 ·
Re: Looking for a IDT74CBTLV3253 model.
Gunoi Nare uploaded a circuit using the built-in "Counter" logic device. Many of the logic devices require parameters, which you must attach or add to the device. To add a parameter, right-click on
By Andy · #89965 ·
Re: Looking for a IDT74CBTLV3253 model.
Thank you Helmut. When Attempting to open de file the error:"multiple instances of circle." is displayed. In Fact all other file will do the same thing although the word "circle' is replaced by 'Flag"
By Gunoi Nare <gunoiar@...> · #89966 ·
Re: Modelling an optoisolator
I am sorry. ...You must apply through a resistor negative bias... You even specify the type of optocoupler. Bordodynov. 02.08.2016, 08:05, "§¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó
By §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó · #89964 ·