开云体育

I haven't yet tried other than 24.1.0, but View > SPICE Netlist > Right-click > Edit as Independent Netlist > Save, is still available from the Schematic menu. I hope that feature remains, otherwise

Sorry, what does R^2 accuracy measure of 0.9993 actually mean ? Thanks.

Hello friends, Is there a way of estimating the base spreading resistance of a bipolar transistor by using LTspice? Perhaps via getting the transistor's S-parameters? Many thanks in advance!

FYI - My advice about adding GMIN across current sources, is that you should specifically add them to your current sources, by adding a resistor in parallel with them. The checkbox in the Control

Keep in mind, this question was asked nearly a year ago.? This conversation ran out months ago and I don't know if the OP is still looking for answers. If I remember correctly, that person was

No, they are not the same. ".options gmin=<value>" sets GMIN to a number.? GMIN is used in a number of places in SPICE/LTspice, including in parallel with EVERY semiconductor junction.? GMIN is used

I have never been mistaken for an analog designer but if your application demands bandwidth, would considering a current feedback amplifier as the basis of your transimpedance amp be a

Thank you Andy. Do you think .options gmin=<value> is actually the same as "Add GMIN across current sources" checkbox? In other words, does .options gmin=<value> add a <value> Siemens conductance in

john23, Apparently, LTspice incorrectly processes the AD797 model file.? I don't understand why it did that, but here is how to fix it. Change from this: to this: By the way, you uploaded the wrong

For tubes/valves, I always look into Radio Designer's Handbook, because the editor was a particular expert on them. Well-hidden in Figure 35.14, in the chapter on communications receivers, is a

Ryu, See the file STEP_Sine_FFT.zip that I uploaded to the Temp folder.? It shows what happens to your waveform when you .STEP the .TRAN simulation's stop time.? When the waveforms are separated

You do not need to look in the LTwiki's "undocumented" options for that.? It is standard in LTspice, in fact in all SPICE programs.? LTspice's Help is somewhat terse about it and does not show you

You could start with a current controlled voltage source. It is the H device in the list of circuit elements.

From Undocumented LTspice ( https://ltwiki.org/index.php?title=Undocumented_LTspice ) , you can explicitly add specific option directives on .asc schematics, then to the auto-generated netlist:

Hello Andy , I am trying to implement the method you reccomended. I have added the OPAMP2 symbol and made the include command for the ad797.cir file. then I tried to added the spice directive script?

@Tony Thank you for your answer, Tony. Is the new version available in the Files section? I also had a look at the PDF file you mentioned. I presume Tswp stands for sweep time, Tdel for the time you

I am a little confused whether it works as you expected, or not as you thought and this troubles you. I suspect there could be a problem doing an FFT when .STEPping Tstop, if the requested time

Maybe I should have mentioned that the D.U.T is nothing extraordinary, it is a Bryston DOA33 replacement (discrete opamp) and? a mere 10dB amplification. -- Ryu

To all who replied so far a hearty thanks! I will do some more experimenting as supposed by Andy. One more thing that troubles me is: when I step Tstop from let's say 12m to 18m in (1m or whatever)

You are not wrong. -- Michael Stokowski LTspice Team Analog Devices Inc.