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You will soon be told this forum is for LTspice-specific questions, not for electronic design. :{) But I would suggest: https://www.analog.com/en/resources/glossary/non-inverting-op-amp.html Dave

Hi Tony, thanks a lot for your reply. Indeed, it's an inverting amplifier. But if you look closer, no need to negative supply as the amplifier positive input is connected to mid-supply: it acts as a

Are you sure? U2 and J2 are correct? U2 is configured as an inverting amplifier and is connected to node OUT, which must always be positive. Therefore, U2's output should go negative, but it can't

Oh god ! Sorry again... Ok, if you haven't noticed yet, I created a PTC symbol / model based upon John Popelish work. I just added a pin for the temperature. Maybe you can look if there is something

This circuit runs in 24.1.4, but fails in 24.0.12 with a singular matrix error. Note: there is a pin (A1) on the thermistor, U7, that is disconnected - it's in the body of the symbol. Perhaps it needs

You didn't fix the path in RQ3E100AT_TH, but never mind. I can't see what is causing the singular matrix error. -- This email has been checked for viruses by AVG antivirus software. www.avg.com

John, I'm very sorry. I forget to correct paths into symbol and indeed I forget a lib too. For R3, it wasn't connected to VCC: the wire was too long ;) I just re-upload the whole schematic:

D’oh! Further breaking a broken interface… Sent: Monday, March 24, 2025 6:48 PM To: [email protected] Subject: EXTERNAL: Re: [LTspice] .STEPping a .WAVE file output

Very nice! I used to have a good mass rename/redate tool for Windows, but it’s been a while. Thak you! Dave Sent: Monday, March 24, 2025 6:27 PM To: [email protected] Subject: EXTERNAL: Re:

We can't run it , because: 1. RQ3E100AT_TH symbol has the full path on your computer attached. OK, we can fix that. 2. RQ3E100AT_TH_Thermal.lib is missing 3. ?There is a connection between the body

Well, I recommend that you read this message: # 159336 ( /g/LTspice/message/159336 ) Andy

Hello John and Andy, thanks a lot for your replies. Please, find my circuit here: /g/LTspice/files/Temp/foldback_switch_groups_io_pascal_plz.zip Best regards, Pascal

It's surprising , will this feature '.wave {Stp+".wav"} 16 44.1k V(Out) ' be added-on ? If 'Yes', it's really powerful new generation. Worth to boost high to 24. 10.5, higher order in higher level.

Version 24.1.6 is not out yet.? Promised for sometime soon, very soon.

Oops, I found the ".step + ,wave" method only works in LTspice XVII, not supported in LTspice V24.1.5. > > > In V24.1.5 I , it only creates a file named "{stp}". Best reards.

Hi, : I have tested the following methods, plus the *.bat running under Windows OS. " .step param stp 1 6 1 .param fs {stp*1k} .wave {stp} 16 44.1k V(out) " --> it generates the file 1, 2,...,6 Then

Some of the things you can try (no guarantees!) include: * Remove voltage sources and replace with "Nortonized" (current) sources. * Add a small GSHUNT, perhaps 1e-12 to as much as 1e-10. * Add a

NICE! Sent: Monday, March 24, 2025 10:39 AM To: [email protected] Subject: EXTERNAL: Re: [LTspice] .STEPping a .WAVE file output Hi, Since this seems like a nice feature, I extended the grammar.

There are indeed infinitely many reasons for that error. We can't help much unless you let us see more of what you are doing. Upload your .ASC file AND all the other files required to run the

Hello everybody, I'm working on a schematic and encounter a "singular matrix" error. I know there are as many cause than people in the mankind, but I would like to have advices to avoid this sort of