Re: Cannot delete file
As long as the flashy animations work, I don't know why anyone would want functionality. It's not like it did work before, did it? Maybe I shouldn't be this sarcastic, but the impression that leaves
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Vlad
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#68921
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Re: Questions to LTC1043 model / SPDT switches
Hello Thomas, Please take a look to this example. Files > Examples > Apps > change-over-switch.asc
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Helmut Sennewald
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#68920
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Re: Cannot delete file
You think they get extra pennies for extra mouse clicks from advertisers? A lousy interface is a good way to get extra user 'involvement'........temporarily. RL
By
boid_twitty
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#68919
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Re: charge amplifier using OPA129; but, imported model (OPA129) doesn't work correctly.
John Woodgate wrote: No, it's an increasing oscillation. I saw it too, when I edited the .tran statement to remove the maximum timestep qualifier. In fact oscillations sometimes remained even with the
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Andy I
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#68918
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Re: charge amplifier using OPA129; but, imported model (OPA129) doesn't work correctly.
In message <l9v5kp+lp4nla@...>, dated Tue, 31 Dec 2013, helmutsennewald@... writes: You mean the damped oscillation on the trailing edge of the output due to the photo-detector
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John Woodgate <jmw@...>
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#68917
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Re: charge amplifier using OPA129; but, imported model (OPA129) doesn't work correctly.
Hello Andy, The following combinations will lead to oscillation without this extra resistor. Normal Solver: .tran 80u Gear solver: .tran 0 80u 0 1n Best regards, Helmut
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Helmut Sennewald
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#68916
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Re: charge amplifier using OPA129; but, imported model (OPA129) doesn't work correctly.
Helmut wrote: "The opamp doesn't like the pure capacitive load of 1nF in series to 1.1nF. Now I added a 10Ohm resistor (which may be in the diode model anyway) to make the opamp happy. I also added a
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Andy I
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#68915
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Re: Limit() function in waveforms not working
In message <l9v1je+61rg4h@...>, dated Tue, 31 Dec 2013, sawreyrw@... writes: I doubted that interpretation because the name 'limit' doesn't mean that in normal language (I know it
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John Woodgate <jmw@...>
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#68914
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Re: Limit() function in waveforms not working
Rick wrote: "It is very easy to build small test circuits to see how different functions operate. Try it." Yup, that is how I came upon this problem. Almost nothing I did could make it work.
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Andy I
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#68913
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Re: Limit() function in waveforms not working
John Woodgate wrote: "I think it's too simple: it isn't obvious what it could mean. Actually, I don't understand the statement in the Help, either: what is the 'intermediate value' of three other than
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Andy I
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#68912
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Re: Limit() function in waveforms not working
John, The intermediate value is the value that is between the other 2. The limit function determine which values are the minimum and maximum, and then selects (plots) the third one. Andy, It is very
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Rick
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#68910
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Re: charge amplifier using OPA129; but, imported model (OPA129) doesn't work correctly.
I just looked at the op-amp's specs, and an input bias current of 15 pA is too large. I don't know where that is coming from, but it seems to be in the op-amp model somehow. Andy
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Andy I
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#68911
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Re: Cannot delete file
Good to hear Yahoo keeps on improving... I suppose this means new upload is next year. Thank you for the info. A Happy New Year to you, all Vlad
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Vlad
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#68909
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Re: charge amplifier using OPA129; but, imported model (OPA129) doesn't work correctly.
Your simulation file is "20131231_test.asc" located in the "Temp" directory. The long URL you posted is useless, because of the way Yahoo does things. Your simulation might be working correctly. I ran
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Andy I
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#68908
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Re: charge amplifier using OPA129; but, imported model (OPA129) doesn't work correctly.
Hello The opamp doesn't like the pure capacitive load of 1nF in series to 1.1nF. Now I added a 10Ohm resistor (which may be in the diode model anyway) to make the opamp happy. I also added a V-source
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Helmut Sennewald
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#68907
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Re: Limit() function in waveforms not working
In message <CALBs-TjThoJ4iiaU4Hs2LN5HUu1FJWkdf+nHvVOBLhJy298egQ@...>, dated Tue, 31 Dec 2013, Andy <Andrew.Ingraham@...> writes: I think it's too simple: it isn't obvious what it
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John Woodgate <jmw@...>
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#68906
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Re: Limit() function in waveforms not working
Then I guess I have to ask ... What known limitations are there in the way limit() may be used, in the waveform viewer? Apparently there are some circumstances where it is not accepted, whether the
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Andy I
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#68905
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charge amplifier using OPA129; but, imported model (OPA129) doesn't work correctly.
Happy New?Year!? ? I have?made a small schematic of a photodiode charge amplifier - photocurrent integrator?(please find the Filelink below.) The photocurrent from?the photodiode part (pulsed
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Park Seongchong
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#68904
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Re: Limit() function in waveforms not working
In message <CALBs-TgDOGn8n=-=pebpYJBKQsUMYqAVCheKmzaSqWo2ZPO3gA@...>, dated Tue, 31 Dec 2013, Andy <Andrew.Ingraham@...> writes: Aren't waveforms inherently variables - functions of
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John Woodgate <jmw@...>
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#68903
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Re: Using HSPICE model directly in LTSPICE
Perhaps the error is in the conversion to PSpice? How did you do it? To use in PSpice you would need 9 separate models to cover the PMOS size range. ...Jim Thompson Web Site:
By
jtanalog
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#68902
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