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Thanks. I had some questions. How do I create the SRD subcircuit? * .subckt SMMD805 1 2 Lser 1 11 1n Cpar 11 2 2p D1 11 2 D_805 * What does Lser, Cpar, D1 mean? Also what does the numbers beside these

Tony wrote, "... I have uploaded one of my old schematics ( /g/LTspice/files/Temp/SRC_PulseGen.zip )... " Tony, I am wondering, what does the "SRC" stand for, in the filenames?

John Woodgate wrote, referring to the SDD model: Could it be 'translated', if it's not too big? If one had a copy of the SDD model in question, I am sure it could be translated to Spice syntax with

The Master of Science Thesis uploaded here (/g/LTspice/files/Temp/Electrical%20Pulsing%20of%20a%20Laser%20Diode%20for%20Usage%20in%20Fluorescence%20Microscopy.pdf) contains the

I have found out following detail regarding setting local and global temperatures, read LTspice code below. Main point is, that you cannot pass the temperature variable in a function to the subcircuit

I have just uploaded the SPICE model of the MA44769-287T Step Recovery Diode as found in MACOM's website. It is here: /g/LTspice/files/Temp/MA44769-287T_SPICE_MODEL.zip

Tony's schematics have the opposite problem of Helmut's from 2006.? Whereas the fonts in Helmut's are tiny, Tony makes his schematics with text that overlaps other text, making many of his schematics

Oops. Yeah, I do that too. ? Fixed. -- Regards, Tony

Tony, you forgot to include your symbol file "diode-steprecovery.asy". Andy

abid wrote, " Is the whole circuit SRD? It's a bit confusing, " referring to step_recovery_diode.asc from 2006. No, I don't think so.? Only about half of it is. Also, the text is rather small, but

It's just the diode itself that's the SRD. I have uploaded one of my old schematics </g/LTspice/files/Temp/SRC_PulseGen.zip> that uses the SRD in shunt mode, which is often more

Is the whole circuit SRD? It's a bit confusing.

Could it be 'translated', if it's not too big? -- This email has been checked for viruses by AVG antivirus software. www.avg.com

I'm sorry, I forgot to include the link to the 2006 schematic file uploaded by Helmut Sennewald, with his step recovery diode.? It is here: Files > z_yahoo > Examples > Educational >

There is another schematic, from 2006, uploaded by Helmut Sennewald, which also claims to use a step recovery diode.? The diode model in that circuit is an "ordinary" SPICE diode using a .MODEL

FYI - There are some step recovery diode models and simulation schematics in our group's Files, from seven years ago.? I refer to these two directories, although beware that some of the uploaded

An image of a spice model for a SkyWorks SRD has been extracted from CVB1031 SRD data sheet and place in the “SRD model and topologies” photo album: /g/LTspice/album?id=295221 i

I have never tried to simulate a SRD using ADS. Apparently there is an Agilent appnote on the topic but I haven’t been able to track it down. The last time I worked with step recovery diodes was

Do you now how to design the SDD in ADS based on the equation and then use that SRD model in other circuits? I could try with the ADS then. Thanks.

The SDD element is a ‘Symbolically Defined Device’ that is used in Agilent ADS simulator. The ADS syntax for the SDD element is definitely not Spice compatible. Ray Anderson