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Maturin, The .73 ohms came from the data sheet. It says a change in the current of 11 mA will cause a maximun voltage change of 8 mV. BTW, you could also create an even simplier model by leaving out

I needed a simulaion with "real world waveform". So i started the electronic and recorded the voltage with a storage scope. 1.6 seconds about 70.000 datapoints. Exported in EXCEL CVS format and used

Hello to all, I just got a private email from another user of the LTspice group regarding accessing Files. It's very interesting and thus I like to share it. -- Hello Helmut, in the case of Shiggi, it

<snip> </snip> Hello Maturin, I don't wish to curtail your joy at the light bulb moment, but the device you're trying to emulate is a band gap reference. Band-pass refers to something completely

OK, I see now. Excellent. Didn't know you could do that; a diode with no forward voltage drop. I also wouldn't have had a clue to give it an on resistance of 0.73 ohms, how did you arrive at that? But

Yup, thanks. I do need it to have rectifying characteristic though, since I was planning to blank the input to blank the load (larger, actual circuit, of course). I'll look at it, thanks very much.

Hi Andy-san! Thanks your attention for me. I have already 3 account of Yahoo to control my acoount or my Contact information. But I could not modify it. So I have Terminate my account and made new

Please see .asc in MATURIN TEMP folder; I deleted all the other files (except rainbowsally's...I can't delete it...???) I made up some parameters for the forward voltage drop in a theoretical diode,

I would suggest a PWL file driving a voltage source and controlling the switch resistance as the PWL could model the particular switch bounce/contact resistance characteristics that will vary

Haven't used this in a while, but I think it does what you want... * .SUBCKT 10-BIT-DAC-BEH BIT9 BIT8 BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 + BIT1 BIT0 DACHIGH DACLOW + PARAMS: VFS=3.3V VH=3.3V VL=0

Thanks, Rick. I had considered that, but I was thinking about trying to use the curve from the LM4041 datasheet...which is for an optimized band-pass device, not close to an "ideal" diode...so i

Marturin, Now that you know how to model a diode, just plug in the behavior you want in the modeling program. It might give reasonable results. Rick

Ah, phooey, I've gotten it all mixed up. Nope, it's not the TL341 OR the TLV431...what I am really trying to find is a model for the LM4041 or ANY shunt 1.225 volt reference (not adjustable, although

Thanks again, Tony. I looked! I swear on my mother's grave!! However, in this case I must have gotten dyslexic: I appear to have searched for TLV341 instead of TLV431. However, I FIRST searched for

YAY! I got it to work! However, I have a leeeetle question: In the Help, it says that the 3rd forward characteristics box is for the difference between the first two measurements (I think...there's

Hello Jack, It's there. Unzip this zip-file and then RUN the .exe. Files > Util > Model Tools > Diode > Diodemodeling.zip http://tech.groups.yahoo.com/group/LTspice/files/%20Util/Model%20Tools/Diode/