Re: Determine phase and gain margin in filter/amp
---In LTspice@..., <405a82e5@...> wrote: Rick, How did you manage to get three digits of resolution? I tried using the cursor but could not locate 0dB or measure the phase angle that
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Frank Wiedmann
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#68571
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XVAR specification
Dear all, I am designing a circuit in LTSPICE. I need a variable resistor to use it in my circuit. I try to use the variable resistor(XVAR) from LTSPICE library. After designing the circuit after
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rakesh sharma
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#68570
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Re: FFT Resolution
ronw6wo wrote: To gain some FFT experience I checked the bandwidth of individual I don't use FFTs regularly, but some things you should be doing include: Disable waveform compression (.option
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Andy I
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#68569
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Re: FFT Resolution
Hi If you upload the your schematics, some will give you a comment, I think. Shiggy
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ÖØËɺê²ý
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#68568
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FFT Resolution
To gain some FFT experience I checked the bandwidth of individual harmonics of a 14MHz square wave They show as having a bandwidth of 1.5 MHz which is ridiculous I have tried many simulation settings
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Ron Skelton
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#68567
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Re: How to create a spice model using only the datasheet
Hello, The diode model is on Vishay's web page. .MODEL ETX06 D (IS=1.8807P N=2.5 BV=680 IBV=100U RS=34.2934M TT=26.4698N + CJO=175.851P VJ=700M M=459.591M EG=2.5 XTI=2 RL=25.4602MEG)) There is no
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Helmut Sennewald
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#68566
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Re: Determine phase and gain margin in filter/amp
Mike, I enlarged the plot at the point where the gain crossed 0dB and used a cursor. Rick
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Rick
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#68564
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Re: How to create a spice model using only the datasheet
In message <l84qps+nq6dbm@...>, dated Mon, 9 Dec 2013, aymen.dardouri1990@... writes: They may not be in the archives, but models of diodes and capacitors can be made from data
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John Woodgate <jmw@...>
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#68565
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Re: How to create a spice model using only the datasheet
i hope that s.b does have the models, even if i think its a bit hard. in fact i only need 2 models: -diode: VISHAY VS-8ETX06FPPBF -capacitor: VISHAY MKP1840422104M
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Aymen Dardouri
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#68563
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Re: Specifying multiple grounds in LTspice
I use a self-made symbol, a small square with a zero-length pin in the middle, which simply netlists as a resistor of value {1/Gmin} to ground. ...Jim Thompson Web Site:
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jtanalog
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#68562
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LDO LTC1844
Hi, I'm trying to do some simulations with the LTC1844 and was surprised it's not included in the Linear devices included in my LTSpice. I did a search in "all_files.htm" that I down loaded and I
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rob@...
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#68561
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Re: How to create a spice model using only the datasheet
aymen.dardouri1990 wrote: i've been told the is a possibility to creat new spice models using only For the very simplest components (individual transistors, diodes), I think it is possible. I don't
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Andy I
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#68560
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Re: How to create a spice model using only the datasheet
In message <l84jdn+uq5msk@...>, dated Mon, 9 Dec 2013, aymen.dardouri1990@... writes: It can be done in some cases, but it's not easy in most cases and near impossible in others. You
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John Woodgate <jmw@...>
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#68559
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How to create a spice model using only the datasheet
Hallo, I'm trying to simulate a new project using very specific components, but i had a huge problem in finding the right spice models, i've loooked everywhere but in vain, i've been told the is a
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Aymen Dardouri
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#68558
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Re: Specifiying multiple grounds in LTspice
I understand that. Yet it's a limitation. I'm not questioning the validity of the explanation. I was just attempting to explain why why some users don't like that. If I'm not mistaken, some other sim
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Jerry Lee Marcel
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#68557
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Re: Determine phase and gain margin in filter/amp
Rick, How did you manage to get three digits of resolution? I tried using the cursor but could not locate 0dB or measure the phase angle that accurately. I assume you used the .measure command - could
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monettsys <405a82e5@...>
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#68556
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Re: Specifiying multiple grounds in LTspice
Jerry, This is not a SPICE or LTspice limitation.? If you had to solve a circuit with a bunch of nodes isolated from ground and wanted to solve the voltages at all the nodes, you couldn't do it,
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Rick
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#68555
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Re: Singleton amplifier loop gain simulation(Stability margins)
Hello, You can figure out how to apply loopgain analysis to this circuit by considering the base of the input transistor as the positive input to a differential amp and the emitter of it as the
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Rick
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#68554
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Re: Singleton amplifier loop gain simulation(Stability margins)
John, Yes, we are looking at different files. I looked at the one posted by vegetat55 to the temp folder. It is an .asc file but the extension doesn't show up so I had to save it, and rename it to add
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Rick
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#68553
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Re: Singleton amplifier loop gain simulation(Stability margins)
In message <l82jov+1092dt7@...>, dated Sun, 8 Dec 2013, sawreyrw@... writes: We must be looking at different .asc files. I'm looking at one that just has MCP6292 op-amps and a few Rs
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John Woodgate <jmw@...>
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#68552
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