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It is definitely written by a human being, because it consistently misspells 'LTspice" (even in the name of the group). -marcel

4n25 is an opto or photo coupler. LED irradiating a light sensitive NPN transistor fda217 is a photo voltaic isolator. LED irradiating an series array of photo voltaic cells They are two different

cander shelter showed a link to an article at " How do you compare different probabilistic design methods using LTSpice? (

Carlos, VISHAY makes a number of Photovoltaic MOSFET Drivers. VOMDA1271, VO1263xx & LH1262xx. They also have spice models available. Some model files even include the .asy file, All you need is to

How do you compare different probabilistic design methods using LTSpice? | | | | | | | | | | | How do you compare different probabilistic design methods using LTSpice? Learn how to use LTSpice to

Yes, yes, I'm using it, but as I need to control a MOSFET, they suggested I switch to this other optocoupler as it would better solve the problem I'm facing. -- Carlos Delfino Em seg., 20 de mai. de

I don't know if this helps, but are you aware that LTspice comes equipped with a 4n25 model? Andy

Hi, I started studying a project using 4n25 to control a mosfet, but I was suggested to use the fda217, does anyone have a model of it that they can share? regards -- Carlos Delfino

Good catch Frank.. I changed the A device "0" reference manually on the outputs but forgot about the inputs.??? :-| I will update the model, noting your revision, and upload in a day or two. eT

" /g/LTspice/files/UCC5304_model_test.zip " Files should be uploaded into the Temp ( /g/LTspice/files/Temp ) folder only. Andy

Frank, Thanks, I suspected there was something going wrong in that UCC5304 model, but had not gotten to that point yet.? Thanks for finding this problem with it. If I remember correctly, this was not

Thanks eetech00 for porting the model. Unfortunately there's a serious bug, it never works with common mode voltage. I tried a correction /g/LTspice/files/UCC5304_model_test.zip

Here's the link /g/LTspice/files/UCC5304_model_test.zip

Hello Andy, you are right about errors in the posted simulation circuit, e.g. duplicated vdd net label. The issue has been also dicussed at Edaboard

Do you realize that by putting a single polarity voltage pulse across the inductor the power delivered from that source is ~0.8Watts? This will heat up the IC and diode. Also, the common-mode voltage

Several points: 1. ?The .ASY and .MOD need to be in the same folder as the .ASC, not a separate one. 2. It works if you delete UIC. Don't use UIC unless it's essential. 3. You set Trise and Tfall to

I'm only using LTSpice at hobby level. I've created a component for bi-di current-sense amplifier INA181 from PSpice model supplied by TI and a little test schematic

Do you mean the effect of tolerances on component values? It doesn't have anything built-in to do that, but there are several ways to do it, ranging from a simple. STEP to nested .STEP, and some other

do LTspice have .Sens analysis (can perform the sensitivity analysis)?

john23 wrote, " I read that i should use 100Mega Ohm resitor to solve my ltspice problem. " Where did you read that? Do you think that the advice came from a reliable source?? Exactly what problem