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Ok, sorry for that. Will upload more complete in the future. Christoph

Alan Revera wrote: "Hi Andy, but the two circuits are identical other than I insert the AC source at different points in the feedback path. This is a linear circuit, I should get the same result when

Ala, you DO get the same results when you probe the SAME points in the circuit. But you are not probing the same points in the circuit. If you probe the differential voltage across the AC source, THAT

Thought it would be a fun look; should have known better. That was a mess. I thought I'd take a look to see how it was implemented, but with scattered bits of disconnected wires, comments, dot

reinhold.pieper, the thing I don't like about what LTspice XVII does with this window, is that it remembers the settings from the last Simulation Command you edited. So if you change from .TRAN to .DC

Hello, The behavior of the "Edit simulation" window has changed form LTspiceIV to LTspiceXVII. Let's assume you have the following simulation command in the schematic. .tran 0 50u 0 50n Now do a

Hi Andy, but the two circuits are identical other than I insert the AC source at different points in the feedback path. This is a linear circuit, I should get the same result when measure across the

I just spotted this -- Christoph wrote, "But I’m wondering about 10mA flowing into the supply of that TL072 opamp." FYI -- Actually it's 14mA, not 10mA. You applied too much rounding and you lost a

"Yes. The behavior changed in LTspice XVII." Hello, Andy, do you see the same behavior as me? That the mask doesn't work properly? Or is it just a problem with my installation? Regards Reinhold

Sorry, what I meant to say was, "If you are probing *anything in one circuit that isn't the same in the other circuit*, you will get different answers." Of course you could probe something else, not

"But earlier (version. IV) the input mask worked without problems." Technically there were problems with it in LTspice III and IV. But not this problem; it handled this pretty well. Yes. The behavior

Alan, apparently you missed the point I made about probing the same or different points in a circuit. The two circuits look to me like they have the same value of gain, when gain is defined as

"When the simulation command begins with a semicolon (";"), then it is a Comment = ignored. Therefore, attempting to edit it will show no data. That's how it is supposed to be. Save it with a dot

reinhold.pieper wrote: "Yeah, you're right. ..." Who is right? Right about what? Andy

Please look at what I wrote about TL072 models not working with the negative supply grounded. You have to ground the 'half supply' voltage point. Best wishes John Woodgate OOO-Own Opinions Only J M

Christoph wrote: "a) I’m wondering why I’m getting ?This Component cannot be edited“ while this does not occur when I right click on the opamp in the file MC33078_ST_test.asc (which is also in

Christoph wrote: "In the vein of experimenting with different opamps I’m trying now out the MC33078, which I also found on this groups’ file area. I uploaded my circuit: mc33078mp.asc

Christoph wrote: "how do I change the symbol of my current TL072 from TL072-R to ?opamp2“ ..." Delete it and insert the new symbol. (There may be tricks to do it by directly editing the .ASC file

I use Win10 64Bit

Yeah, you're right. But earlier (version. IV) the input mask worked without problems.