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That's odd. I get the -3 dB frequency as 38 kHz. The point about the resistor values is quite subtle, as it doesn't apply to most common op-amps, and the data sheet doesn't draw attention to it. Best

Hello Jan, Your circuit finds the operating point aftre a long time in the pseudo transient analysis. You can automatically skip the other methods. See below. .options noopiter gminsteps=0 srcsteps=0

Hello Jan, Balance the opamp input resistances by inserting 10k in series with the inverting input of the first opamp and 15k in series with the inverting input of the second opamp. This makes the

It's not about convergence really; LTspice cannot find the DC operating point easily.? If you add the Spice directive .option gminsteps=0, the simulation runs and gives credible results for the AC

Jan wrote: "I'm trying to simulate a Sallen Key filter with a cutoff frequency of around 40kHz using a unipolar 5V source (See TEMP section). The initial operating point solution does not converge. I

Jan wrote, "The initial operating point solution does not converge. " Actually, it does. But the Gmin Stepping algorithm has trouble, and either runs a very long time or never finishes. We see this

I’m talking about nothing else than having them open in the window of one and the same LTspice application. But I now see that I have to 1. Select Duplicate (F6) 2. Frame the area to be selected. 3.

Hello there group members, I'm trying to simulate a Sallen Key filter with a cutoff frequency of around 40kHz using a unipolar 5V source (See TEMP section). The initial operating point solution does

In order to copy a schematic or part of one to another schematic, you have to have both schematics open in the same instance of LTspice. Open them both before you try to copy. Best wishes John

I thought it would work to select/duplicate a portion of a schematic and drag it into a new window? But for the moment I can't find the protocol how to perform this. With a copied circuit hanging on

Thanks, nice trick. — Christoph

I name all nodes that might be "interesting" so I know where everything is. Donald. -- *Plain Text* email -- it's an accessibility issue () no proprietary attachments; no html mail /\

Hello Christoph, There is no cross probing available, but there is a workaround. Click the "search"-icon on the toolbar and enter the netname. Then the net will be highlighted. Best regards, Helmut

To find a signal name in the schematics, is it possible to highlight this signale, e.g. from the plot view? I have a lot of signal names but can't find them quicklx in the circuit drawing. --

Hello analogspiceman What was his response? I'm also curious because, by chance, I saw this topic come up on electronics.stackexchange a few days ago. -- Vlad ______________________

I recently asked Mike if would be possible to add a new feature to .savebias and .loadbias invoked by the keyword “eachstep” whereby in a stepped simulation, each succeeding step would load the

thanks all

wgrandner wrote, "What does Heightened Def Con mean ?" It means LTspice is having some trouble, but hasn't given up yet. In your case, it may mean there is something in your circuits that is making

When I run simulations, I get a messages in the Spice error log stating Heightened Def Con from 0.00011015 to 0.00011015 In most of my simulations I get over 100,000 messages, where the number is

ericsson.sunshine, There are lots of problems with your 20181130_subckt_stepping_ng_FFSD08120A_2p.zip example. You should start simple, then build up to more complex, not the other way around. When