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Re: 1/f noise modelling of Poly resistors...
Apparajan schrieb: http://www.edaboard.com/thread148902.html - Henry -- ehydra.dyndns.info
By ehydra <ehydra@...> · #47034 ·
Re: plotting harmonic components in the time domain
Just a thought .. You could build a cascade of bandpass filters at the third harmonic (if you use the Laplace sources there is some question as to how they will work in the time domain) and then
By Ganesan <dg1@...> · #47032 ·
Multiple plot panes
If you implement more than one plot pane, only one is fully rendered; the others are greyed. For printing, and even for screen capture for sending to colleagues, it would be good to have all fully
By John Woodgate <jmw@...> · #47033 ·
Re: model, subckt tube EC81 = 6R4
In message <4E74F464.5000207@...>, dated Sat, 17 Sep 2011, Ganesan <dg1@...> writes: Just omit it; why play with silly extreme values? -- OOO - Own Opinions Only. Try
By John Woodgate <jmw@...> · #47031 ·
Re: model, subckt tube EC81 = 6R4
In message <j52s64+3f13@...>, dated Sat, 17 Sep 2011, Charly Engineering <charly020664@...> writes: Yes, because there would be negligible current (maybe 100 nA) through it anyway. -- OOO
By John Woodgate <jmw@...> · #47030 ·
plotting harmonic components in the time domain
Hello everybody, I know we can use the .four command to get the harmonic components in the error log and use the FFT to get the spectra in the waveform viewer (which appears in its own window). Is it
By benjohnson524 <benjohnson2001@...> · #47029 ·
1/f noise modelling of Poly resistors...
Poly resistor 1/f noise is becoming more important. Is there a simple way to model this in LTspice..? See for example
By Apparajan <dg1@...> · #47028 ·
Re: model, subckt tube EC81 = 6R4
I remember you mentioned something about simulating noise.. You my have to make rgk partially noise free.. http://www.john-a-harper.com/tubes201/#Noise (section 6 and section 7 give you a good idea of
By Ganesan <dg1@...> · #47027 ·
Re: model, subckt tube EC81 = 6R4
Thanx, I hope that will not be an adventuresome simulation :-) Leo
By Leo Baumann · #47026 ·
Re: Ideal Swich Model missing
I think keep the existing terse help in LTspice... Add web links wherever necessary and clicking the web links will give examples, simulations and pictures, etc.. As new problems get solved they could
By Ganesan <dg1@...> · #47025 ·
Re: model, subckt tube EC81 = 6R4
Just make it 500 meg or something larger...
By Ganesan <dg1@...> · #47024 ·
Re: model, subckt tube EC81 = 6R4
No, grid will not get positive to cathode. Can I delete Rgk from the subcircuit? best regards Leo ...
By Leo Baumann · #47023 ·
Re: Ideal Swich Model missing
This help idea sounds great. I drafted a request to 'Panama Mike' on this group, and copied that request to info@..., to copy and use scad3.pdf as a basis for a linkable, expanded help
By Lewis <lineblp@...> · #47022 ·
Re: model, subckt tube EC81 = 6R4
In message <j52p27+bpi2@...>, dated Sat, 17 Sep 2011, Charly Engineering <charly020664@...> writes: Are you going to operate it with grid positive to cathode? If not, you don't need Rgk.
By John Woodgate <jmw@...> · #47021 ·
Re: wanted: opamp browsing, like transistor browsing
By schockenbaum · #47020 ·
Re: model, subckt tube EC81 = 6R4
I could work out mu and k for that tube-model. Unfortunately I could not get any value for Rgk of the tube. :-( Rgk is a problem .... best regards Leo
By Leo Baumann · #47019 ·
Re: plotting magnetic field
By Tony Casey <tony@...> · #47018 ·
Re: Ideal diode
I would recommend using the level 2 switch model to create an ideal diode, as it often simulates better. You can even make the diode voltage 0. Some examples I have used: zero volt diode: .model
By Wayne S <enety@...> · #47017 ·
Re: wanted: opamp browsing, like transistor browsing
Hello Carl, I'm not sure whether this would rate as equivalent to the "Pick New
By Tony Casey <tony@...> · #47016 ·
Re: Ideal Swich Model missing
Hello, I think we will not have any chance to enhance the original help with tutorials. This help is intended to be a reference only. I am sure Mike will not change that. If we want a more tutorial
By Helmut Sennewald · #47015 ·