Re: high frequency MHz and GHz range BJTtransistor or Mosfet
Frank Mead wrote: "The 2n918, 2n5179, and the 2n2857 are still alive and well in Mouser database... they are still used..." Indeed they are listed. But did you check the prices and availability? At
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Tony Casey
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#90050
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Re: LT1171 model: syncronization not working
Matt, I just looked at it, and it looks as if SOME of the LT1171's switching pulses are synchronized with the Vc input pin. Those ones have a narrower pulsewidth than the ones around them. Maybe it
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Andy
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#90082
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Re: LT1171 model: syncronization not working
Hello Matt, The sync-feature is only implemented in a very few SPICE models as far as I know, Best regards, Helmut
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Helmut Sennewald
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#90049
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Re: LT1171 model: syncronization not working
On many of the LT switch mode controllers, the sync function is not implemented in the spice model. Don¡¯t know about that specific one. Jim ' James Wagner Oregon Research Electronics
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Jim Wagner
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#90081
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Re: AD630 circuit simulation, no line shown
Helmut uploaded "CircuitAD631_1.zip" earlier, but I don't see a message from him yet. Maybe it is stuck in Yahoo-jail, like other messages are today. His upload says that he added SPICE Directives to
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Andy
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#90046
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"4 GROUP.zip" upload
Jeff (kinarfi) uploaded a file "4 GROUP.zip" to the group's Temp folder, but there is no message yet to the group about it. I don't know if you forgot to send one, or if it is just held up by today's
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Andy
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#90067
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Re: LTspice IV (NOT RESPONDING)
Yes this is a Windows thing, the 'not responding' is displayed in the window title bar after the application name. It usually means Windows is busy doing something else. So program is hung up.
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aurvii
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#90077
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Re: Thyristor library
(Another reply that vanished into the Internet): Hassan wrote: "I have found either the .lib file or the symbol !!! " That is good. The first thing to understand is that they are almost completely
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Andy
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#90045
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Re: Current Dependent Voltage Source
Wow, emails to [LTspice] are not making it again! Here is a message I sent several hours ago that hasn't shown up yet: --- "rmoreno.phone" asked how to enter a table of measured values for her/his
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Andy
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#90044
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Re: high frequency MHz and GHz range BJTtransistor or Mosfet
The 2n918, 2n5179, and the 2n2857 are still alive and well in Mouser database... they are still used... LTspice@...> wrote:
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Frank Mead <wa6ujj@...>
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#90043
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Re: Sub circuit heat dissipation not showing
Helmut, I know you said "All the Darlington transistors in my examples correctly plot power" But that's not my issue. I can see the plot/s but I was thinking I would see "dissipation" in watts as with
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Brad Feltz
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#90100
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Re: high frequency MHz and GHz range BJTtransistor or Mosfet
There is a standard multi-vibrator circuit that uses the industry workhorse driver the 2N2222 NPN BJT* and I believe it is listed in the examples files (educational) as "astable.asc". That is a good
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William
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#90066
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Re: high frequency MHz and GHz range BJTtransistor or Mosfet
Jim wrote: "Try a 2N918. Small signal, but I think it is in the built-in LTspice library." Sadly, this isn't in the standard.bjt file, and it would be long-obsolete anyway, along with the very similar
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Tony Casey
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#90042
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Re: AD630 circuit simulation, no line shown
Hello Tob, Please watch the SPICE-directives in my uploaded file CircuitAD630_1.zip. It contains a few SPICE-directives to achieve convergence. I also removed the absolute paths of the model files in
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Helmut Sennewald
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#90078
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Re: AD630 circuit simulation, no line shown
Hello Tob, I tested with the latest LTspiceXVII which has been released today. Please ad the following SPICE-directives. .options method=gear .options gmin=1e-10 abstol=1e-10 .options cshunt=1e-16
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Helmut Sennewald
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#90073
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Re: Sub circuit heat dissipation not showing
Hello, The power dissipation of the TIP142 from our Files section will be correctly displayed. TIP_142_test.zip https://groups.yahoo.com/neo/groups/LTspice/files/%20Lib/
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Helmut Sennewald
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#90041
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Re: AD630 circuit simulation, no line shown
The purpose of this whole circuit is to test the AD630, so switching it with another op amp would solute my problem :/ Thanks though!
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tob.nagel@...
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#90040
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Re: AD630 circuit simulation, no line shown
Yes, you are right. It's pretty late here, sorry :/ So my problem is, that I want to simulate the following circuit: [1] Therefore I built up a schematic, which I uploaded in the temp directory as
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tob.nagel@...
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#90039
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Re: AD630 circuit simulation, no line shown
At 01:51 PM (-0700) 8/3/2016, tob.nagel@... wrote: ---------- Original Message ---------- >Hey, >simple task: I want to simulate the circuit in the following picture:
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jtanalog
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#90038
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Re: Sub circuit heat dissipation not showing
Okay Thanks I tried that and still the same thing. Just displays a formula for power dissipation, but I can left click to plot power. ---In LTspice@..., <analogspiceman@...> wrote : Hello
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Brad Feltz
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#90037
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