开云体育

Hi Richard, ? Aside from the form Helmut gave you, you can set any resistor to as many changes as you need. The format, which is entered in the resistance window in place of a single value is :

Hello Mark, You could use my uploaded THD simulation. The results from .FOUR agree with my formula. Give it a try. Best regards, Helmut

Thanks a lot, you found where I was wrong. Indeed, I was tricked by the .FOUR function default calculation on 9 harmonics only. I tried with 99 harmonics and got a much different result. The

John, Get over it. Of course, it is silly to specify any parameters to 10 digits, but so what? I'm sure Ikf varies by +/-25%, but so what? Rick

In message <kkf6tn+ghqn@...>, dated Sun, 14 Apr 2013, Helmut <helmutsennewald@...> writes: It isn't how good the models are that is bugging me; it's the unreality of giving the

Thanks! I saw their SPICE models but not that one. And the "Simulation Models" link from the part's page led nowhere.

Hello John, Most models from other vendors don't have Ikf at all. So the models from OSRAM are at least as good as the models from other vendors. I recommend to use the OSRAM models. Best regards,

Greetings, If we make some assumptions then the math becomes easy enough that even I can do it. First, imagine that you are taking a pure sinewave and subtracting a small signal from it to create the

In message <kkf3is+3juc@...>, dated Sun, 14 Apr 2013, Helmut <helmutsennewald@...> writes: Not Helmut's responsibility, but isn't it disquieting that these are given to 10 significant

Hello, The model for the OSRAM SFH4248 is in the file OSRAM-IR-POWERTOPLED.lib http://catalog.osram-os.com/applications/applications.do?folderId=6&favOid=000000030003a11f01ca0023&act=showBookmark#

Hi folks, I'm trying to model an infrared remote control transmitter circuit that I'm designing and haven't had much luck finding a SPICE model for the higher-power IR LEDs like I'm using. In this

In message <759B589F6950452C8C99FA8446748D7E@Maison3>, dated Sun, 14 Apr 2013, basier. philippe <basier.philippe@...> writes: Yes, I did have the problem a few weeks ago, and at that time, I

Hello Philippe, I am using at the moment a PC with XP. I can directly open all_files.htm without saving it. I checked with Firefox, IE and Chrome. All three worked as expected. Best regards, Helmut

In message <913832DA74584FFFB1B82295C5FF0858@Maison3>, dated Sun, 14 Apr 2013, basier. philippe <basier.philippe@...> writes: It should: it does on my computer. Which version of IE do you have?

Hello Mario, I just made the missing INA193 example. Files > Lib > INA193_test.zip http://tech.groups.yahoo.com/group/LTspice/files/%20Lib/ It's best practice to copy the model file and the symbol

But you wrote that you have had the same problem Philippe

Rick, Yes , I did it. But it's not handy think about updates oh all_files. I don't use my drve C: for dowloading ot installations. Even LTspice IV ! Thanks Philippe

In message <kket93+h2gb@...>, dated Sun, 14 Apr 2013, sawreyrw <sawreyrw@...> writes: This suggests (not very strongly though) that a browser or anti-virus security setting is stopping

Dear Helmut, I can only dowload it and open the dowloaded file. I did it . I can't open it from my browser (IE). Regards, Philippe

Philippe, It doesn't work for me either. You need to download it to your C drive, and then you will be able to open it with your browser. Rick