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Re: low noise amplifier
Hi. Model: .SUBCKT q2SC5006_v111 7 8 9 Ccb 2 5 58f Cce 2 6 87f Cbe 7 9 0.67f Cb 1 2 180f Ce 2 3 180f Lb 5 7 1.09n Lc 2 8 0.79n Le 6 9 0.99n Lb2 1 5 0.004n Le2 3 6 0.004n Qnpn 2 1 3 q2SC5006_v111_M
By §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó · #64683 ·
low noise amplifier
dear everyone i have toruble to design low noise amplifier. i search transistor 2SC5006 in library LTspice but i can't found it. please help me how to get transistor 2SC5006 in library LTspice
By ferdiancahyodwiputro <ferdiancahyodwiputro@...> · #64682 ·
Re: A TVS does not work with load dump test??
Everything said here is correct. The voltage source has precisely zero output resistance, so it will sustain the driven voltage at whatever current, no matter how hard the TVS tries to shunt it.
By Andy I · #64681 ·
Re: A TVS does not work with load dump test??
The voltage source is virtually ideal; it?has virtually no output impedance, so there is nothing across which to drop the voltage and it can supply virtually infinite current. The current through the
By kungfu_phil · #64680 ·
Re: A TVS does not work with load dump test??
Hi, I have already put the file into TEMP folder, the file name is "TVS_clamp.asc", thanks a lot for your help!!
By eqmqiq · #64679 ·
Re: inductance with a permeability in dependency of frequency
The permeability of some magnetic core materials is highly frequency-dependent - a good example is the amorphous materials marketed as parts for common-mode chokes. At common test frequencies, these
By boid_twitty · #64678 ·
Re: OT/Left Field...
For the person who must run LTspice on a tablet there is the Microsoft Surface Pro. See: <http://www.pcworld.com/product/1252503/surface-pro-128gb-.html> For comparison a 128Gb Iipad price is $799.
By Howard Hansen · #64677 ·
Re: arbitrary solar cell model
What made your netlist confusing to me, where a schematic would have helped, is figuring out the interconnections between the subcircuits, and between them and the other elements. Having nodes marked
By Andy I · #64676 ·
Re: arbitrary solar cell model
Agree, but it is teditious to debug and/or examine a *.CIR file. No one is interested in a .cir file. - as Rick sawreyrw said. No one will do that job for you. So if you cannot transform the *.CIR
By schockenbaum · #64675 ·
Re: File of where the keyboard shortcuts are stored
scad3.ini is now named LTspiceIV.ini. I believe its location is $APPDATA$&#92;LTspiceIV.ini. The exact location of $APPDATA$ is dependent on your version of Windows. On this computer, it defaults to
By Andy I · #64674 ·
File of where the keyboard shortcuts are stored
Hello. I once knew how to transfer the keyboard shortcuts from my desktop to my laptop of LTspice. I have searched for it and found instructions that say that a scad3.ini file is located in Windows,
By scottholloway123 · #64673 ·
Re: arbitrary solar cell model
hamed <l0st_l0rd@...> wrote: the reason that I use arbitrary model not a standard diode is that I cannot You can. See the Help utility: LTspice IV > LTspice > Circuit Elements > D. Diode Syntax:
By Andy I · #64672 ·
Re: arbitrary solar cell model
Dear Fred Thank you very much for your answer. the reason that I use arbitrary model not a standard diode is that I cannot control temperature change for each solar cell in diode model. Furthermore,
By hamed · #64671 ·
Re: arbitrary solar cell model
Sorry I mis-typed, you probably want to leave v(inp) alone (don't reference it to 'ref') but you do want to change v(internode) to v(internode,ref). There still seems to be some other problem, though,
By Fred · #64670 ·
Re: OT/Left Field...
As you may know, Mike Engelhardt has said before that LTspice isn't going to be ported to another platform or OS. That would be a major undertaking. If there exists anything similar to Wine for Linux
By Andy I · #64669 ·
Re: 74F and 74ACT models
At one time, T.I. and National Semi (which is now T.I.) had SPICE models for them. In a university project I should simulate and analyse the frequency If you mean crosstalk within a device (multiple
By Andy I · #64668 ·
Re: arbitrary solar cell model
Hello Hamed, While I would also advise you to use a standard diode model instead of building your own, I may be able to shed some light on your difficulty. Note that your derived values for ISC and
By Fred · #64667 ·
locking the graph vertical axis
Having used LTSPICE for some years now, I never satisfactorily solved this issue: I have some circuits that have essentially 0 gain, plotted on dB scales - I get 100's of dB on the vertical axis. I
By Kevin Cobley · #64666 ·
Re: inductance with a permeability in dependency of frequency
I sometimes use a 'linear' representation of inductors to speed analyses. Try a ladder network of linear inductors and resistors. Just like in fitlering, you have to change the first and last
By Macy · #64665 ·
Re: inductance with a permeability in dependency of frequency
Hi Herbert A simple model would be an inductor in parallel with a resistor. Most ferrous cores behave well up to a cross over frequency at which the perm drops and they become very lossy. The loss
By Al Dutcher · #64664 ·