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Integrate and dump signal
Hi all, I would like to create the integrate and dump in LTspice (the same with integrate and dump block in Matlab). I can create the integrate by the equivalent idt() with bv.asv. However, I do not know how to dump the signal. Is there any one know how to do please help? Thanks
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Re: low noise amplifier
Hi Ferdian Cahyodwiputro.
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I created a small electronic circuit to test the model. Using this scheme, I found that the description of the transistor pins are in non-standard order. I will put circuit in the TEMP folder. Bordodynov. 10.07.2013, 15:33, "Ferdian Cahyodwiputro" <ferdiancahyodwiputro@...>: Hi Mr. §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó |
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Re: low noise amplifier
Ferdian Cahyodwiputro
Hi Mr. §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó
can you upload this component? because i still can't understand to create new component.. i'm still newbe ________________________________ From: Ferdian Cahyodwiputro <ferdiancahyodwiputro@...> To: "LTspice@..." <LTspice@...> Sent: Wednesday, July 10, 2013 6:22 PM Subject: Re: [LTspice] low noise amplifier ? thank you.. this conversation helpfull my trouble. ________________________________ From: §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó <BordodunovAlex@...> To: "LTspice@..." <ltspice@...> Sent: Wednesday, July 10, 2013 5:06 PM Subject: Re: [LTspice] low noise amplifier ? ==>HELP==>F.A.Q==>Third-party Models--> ..... Example for a 3-pin NPN transistor but defined with a .SUBCKT statement: ..... Bordodynov. 10.07.2013, 13:55, "Ferdian Cahyodwiputro" <ferdiancahyodwiputro@...>: thank you for your information by the way so i must create new design symbol with this parameter?[Non-text portions of this message have been removed] [Non-text portions of this message have been removed] |
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Re: low noise amplifier
Ferdian Cahyodwiputro
thank you..
this conversation helpfull my trouble. ________________________________ From: §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó <BordodunovAlex@...> To: "LTspice@..." <ltspice@...> Sent: Wednesday, July 10, 2013 5:06 PM Subject: Re: [LTspice] low noise amplifier ? ==>HELP==>F.A.Q==>Third-party Models--> ..... Example for a 3-pin NPN transistor but defined with a .SUBCKT statement: ..... Bordodynov. 10.07.2013, 13:55, "Ferdian Cahyodwiputro" <ferdiancahyodwiputro@...>: thank you for your information by the way so i must create new design symbol with this parameter? |
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import Touchstone file (s2p) to LTSpice
Hi,
I have ".s2p" files of some inductors and I need to import this file as a model to the inductors I have drawn in LTSpice in order to use it in the simulation, in order to do a practical simulation. I downloaded the "s2spice_097.exe" from the "group files" and generate the .lib file, I get a file like this: /***/ .SUBCKT 06HPR33 1 2 3 * MHz S MA R 50 * Z1=50.000000 Z2=50.000000 R1N 1 10 -5.000000e+001 R1P 10 11 1.000000e+002 R2N 2 20 -5.000000e+001 R2P 20 21 1.000000e+002 *S11 FREQ MAG PHASE E11 11 12 FREQ {V(10,3)}= MAG +( 1.000000e+006, 4.400000e-002, 2.585500e+001) +( 1.047000e+006, 4.400000e-002, 2.681900e+001) +( 1.097000e+006, 4.500000e-002, 2.780500e+001) . . . /**/ Then I added to my inductor in the spicemodel field: 06HPR33 , and add in the spice directive the following: .lib "the path to my .lib file". But when I run the simulation I get nothing for the inductor, so kindly advice what I'm doing wrong. Thanks |
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Re: low noise amplifier
==>HELP==>F.A.Q==>Third-party Models-->
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..... Example for a 3-pin NPN transistor but defined with a .SUBCKT statement: ..... Bordodynov. 10.07.2013, 13:55, "Ferdian Cahyodwiputro" <ferdiancahyodwiputro@...>: thank you for your information by the way so i must create new design symbol with this parameter? |
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Re: low noise amplifier
Ferdian Cahyodwiputro
thank you for your information by the way so i must create new design symbol with this parameter?
________________________________ From: §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó <BordodunovAlex@...> To: "LTspice@..." <ltspice@...> Sent: Wednesday, July 10, 2013 12:21 PM Subject: Re: [LTspice] 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 .MODEL q2SC5006_v111_M NPN +(IS=616e-18 BF=161 NF=0.99 VAF=50.0 + IKF=1.5 BR=14.4 NR=0.99 VAR=2.4 + IKR=0.32 ISE=38.2e-14 NE=2.19 ISC=80e-17 + NC=1.0 RB=4.37 IRB=759e-6 RBM=2.23 + RE=0.4 RC=5.0 CJE=2.21p VJE=0.954 + MJE=0.408 CJC=1p VJC=0.667 MJC=0.408 + XCJC=0.8 + FC=0.50 TF=20.0e-12 XTF=1e-3 VTF=0.668 +ITF=9.7 TR=0 PTF=40 EG=1.11 + XTI=3.0 XTB=0) .ENDS q2SC5006_v111 Bordodynov. 10.07.2013, 08:20, "ferdiancahyodwiputro" <ferdiancahyodwiputro@...>: dear everyone [Non-text portions of this message have been removed] |
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Re: A TVS does not work with load dump test??
I got it, thanks for all your suggestions.
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--- In LTspice@..., Jim Wagner <wagnejam99@...> wrote:
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Re: locking the graph vertical axis
Tony Casey
--- In LTspice@..., Kevin Cobley <kevin.cobley@...> wrote:
Hello Kevin, This topic comes up regularly (last week in fact). The solution to this is once you have adjusted the scales to your satisfaction, save the plot settings: - Make sure the plot window is active - Menu=>Plot Settings=>Save Plot Settings - After each simulation, Menu=>Plot Settings=>Reload Plot Settings It is very helpful to assign a hot key to this command - many people use the spacebar. To do this, from the control panel (hammer icon): Waveforms tab=>Hot Keys You can assign a large number of menu commands to hot keys; many are pre-assigned, by default. Regards, Tony |
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Re: A TVS does not work with load dump test??
Important intuitive point - TVS does not have sharp breakdown like a zener.
Note, carefully Bordodynov's specs. Breakdown (probably at 10-100mA) of 26.7V to 29.5V. Conduction voltage rises 9V by the time the conduction current rises to 15.4A. Of course, no ordinary zener can handle that sort of current. Jim Wagner Oregon Research Electronics On Jul 9, 2013, at 11:03 PM, §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó wrote: All you get it right. Carefully study the documentation for the complete set. [Non-text portions of this message have been removed] |
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Re: A TVS does not work with load dump test??
All you get it right. Carefully study the documentation for the complete set.
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Datasheet ----> Breakdown Voltage Vbr=26.7- 29.5V, Clamping Voltage Vc=38.9V at IPPM=15.4A Bordodynov. 10.07.2013, 09:46, "eqmqiq" <g9512728@...>: Thanks for everyone's suggestion, I put a new TVS from the LTspice library(SMBJ24CA) and set a series resistance(0.5 ohm) for the voltage source. |
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Re: A TVS does not work with load dump test??
Thanks for everyone's suggestion, I put a new TVS from the LTspice library(SMBJ24CA) and set a series resistance(0.5 ohm) for the voltage source.
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the simulation result shows the voltage is clamped at 36V, but the breakdown voltage of the TVS is 24V, I don't understand why...? wrong parameter setting?? I update the asc file to TEMP folder with the same file name " TVS_clamp.asc" --- In LTspice@..., Andy <Andrew.Ingraham@...> wrote:
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Re: low noise amplifier
Hi.
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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 .MODEL q2SC5006_v111_M NPN +(IS=616e-18 BF=161 NF=0.99 VAF=50.0 + IKF=1.5 BR=14.4 NR=0.99 VAR=2.4 + IKR=0.32 ISE=38.2e-14 NE=2.19 ISC=80e-17 + NC=1.0 RB=4.37 IRB=759e-6 RBM=2.23 + RE=0.4 RC=5.0 CJE=2.21p VJE=0.954 + MJE=0.408 CJC=1p VJC=0.667 MJC=0.408 + XCJC=0.8 + FC=0.50 TF=20.0e-12 XTF=1e-3 VTF=0.668 +ITF=9.7 TR=0 PTF=40 EG=1.11 + XTI=3.0 XTB=0) .ENDS q2SC5006_v111 Bordodynov. 10.07.2013, 08:20, "ferdiancahyodwiputro" <ferdiancahyodwiputro@...>: dear everyone |
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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. However, the other thing I find noteworthy is that your TVS is conducting hundreds of amps even with the normal operating voltage (12.8V) when there is no spike. I do not think you have set up its model parameters correctly. Despite the fact that you have a TVS schematic symbol, the parameters you gave it are for an ordinary silicon diode. LTspice comes with two TVS diodes in its standard diode library. They use different parameters than the ones you've specified. Regards, Andy |
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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 TVS is limited by its own impedance. If you look at the current through the TVS, you will see that it is over 800 Amps. If you add some parasitic series resistance to the voltage source, like a real voltage source will have, you will see that the TVS does, indeed, clamp the voltage.
? ?? - Philip ________________________________ From: eqmqiq <g9512728@...> To: LTspice@... Sent: Tuesday, July 9, 2013 8:07 PM Subject: [LTspice] 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!! --- In mailto:LTspice%40yahoogroups.com, ¨¢???????? ?????????¡Á <BordodunovAlex@...> wrote:
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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!!
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--- In LTspice@..., ¨¢???????� ?????????¡Á <BordodunovAlex@...> wrote:
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Re: inductance with a permeability in dependency of frequency
--- In LTspice@..., "sawreyrw" <sawreyrw@...> wrote:
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 may measure ten to 100 times their effective inductance when applied in the narrow-band conducted emissions frequency range (100KHz-1MHz), where the impedance is most critical. RL |
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Re: OT/Left Field...
For the person who must run LTspice on a tablet there is the Microsoft
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Surface Pro. See: <> For comparison a 128Gb Iipad price is $799. Howard On 7/9/2013 12:40 PM, Andy wrote:
As you may know, Mike Engelhardt has said before that LTspice isn't going |
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