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Date
Re: No XP?
Hello, I don't know about whether LTspiceXVII works with Vista, but it may work too. Have you tested LTspiceXVII with Vista? I am sure LTspice will be for free forever. Best regards, Helmut
By Helmut Sennewald · #90114 ·
Re: Sub circuit heat dissipation not showing
Thanks John for correcting me. I should have said Average Power.
By Brad Feltz · #90137 ·
No XP?
But whatabout vista? I do not know about you guys, but I hate to putz around with computers. These are just tools, hammers so to speak, and I expect them to behave as such. For your general knowledge
By gunoiar@... · #90113 ·
Re: Need help to design a transimpedance amplifier
I read through a few post, you want to detect from 200nA to 100uA with BW>=1MHz. You can do it in one single stage with feedback resistor of 50K. The output range is from 10mV to 5V. This is not hard
By Alan Liu · #90123 ·
Re: RC circuit time delay value not correct
Reminder: When you joined this group, you read the instructions saying that pictures of schematics are not helpful, and should not be sent as a replacement for the schematic itself. It was
By Andy · #90154 ·
Re: RC circuit time delay value not correct
wikihanya wrote: "... since the RC value is 100ps. it should introduce a delay of 100 ps ..." That was your mistake. An RC network has a frequency-dependent delay, not a constant delay. For the
By Andy · #90111 ·
Re: RC circuit time delay value not correct
wikihanya wrote: "... since the RC value is 100ps. it should introduce a delay of 100 ps ..." That was your mistake. An RC network has a frequency-dependent delay, not a constant delay. For the
By Andy · #90112 ·
Re: Henry's current transformer problem
For some ferrites, the Curie temperature, at which Br falls to zero, is not far above 100 degrees C. With best wishes DESIGN IT IN! OOO ¨C Own Opinions Only <http://www.jmwa.demon.co.uk/>
By John Woodgate <jmw1937@...> · #90109 ·
Re: RC circuit time delay value not correct
An RC filter does not 'delay' signals, but low pass filters them, with a frequency dependent phase delay. An RC value of 100ps says that the step response gets to 1/e of the final value in 100ps. --
By Richard Damon · #90171 ·
Re: RC circuit time delay value not correct
We don't know, because you have not uploaded your .asc file to Files => Temp on the list's web site. When you have done that, we can run it to compare our results. Even in this apparently simple case,
By John Woodgate <jmw1937@...> · #90107 ·
Re: RC circuit time delay value not correct
Hello 4cwnirjjs53rhghqimgmcb5zflk7qn7mkdjgphlk We can't see the screen of your computer. Please upload your example in the section Files\temp of this group. Regards PhB
By @theeten2 · #90136 ·
RC circuit time delay value not correct
Hi, i am new to LTSPICE. i am simulating this series RC circuit with an input of 1GHz. sine wave. since the RC value is 100ps. it should introduce a delay of 100 ps to the voltage across the capacitor
By WIKI wiki · #90105 ·
Re: Henry's current transformer problem
In another post you said your fundamental frequency is 50 Hz. Are you sure that this ferrite core is suitable for a 50 Hz CT? Normally, low-frequency CTs have nickel-iron cores. With best wishes
By John Woodgate <jmw1937@...> · #90243 ·
Re: Sub circuit heat dissipation not showing
Brad, One of the frustrating things for me about this conversation, is that I don't think you have made clear what you are simulating, and what your problem or question is. You referred to a TIP142
By Andy · #90126 ·
Re: .wav files
Hello Teodor, Please run the examples you got wit LTspice. wavein.asc, waveout.asc, ring.wav C:\Program Files (x86)\LTC\LTspiceIV\examples\Educational Best regards, Helmut
By Helmut Sennewald · #90103 ·
Re: Sub circuit heat dissipation not showing
Hello Brad, Ctrl left mouse click on the plot formula in the waveform viewer. LTspice will then show a small window with the average power. Best regards, Helmut PS: Second attempt to write an answer.
By Helmut Sennewald · #90127 ·
.wav files
Hello, I do have a problem in using a .wav file as a input voltage source. I have followed the instructions of Spice Guru Simon Bramble in this video: LTspice: Voltage Sources (Importing and Exporting
By Teodor Vasile · #90102 ·
Re: Sub circuit heat dissipation not showing
Nit: "there is **no such thing** as 'RMS power'." Well, there is, but you wouldn't find it a useful thing to compute. As you said, it has no physical significance. So nobody ever calculates RMS power.
By Andy · #90124 ·
Re: Sub circuit heat dissipation not showing
Hello Brad, Ctrl left mouse click on the power formula in the waveform window. Then you will get a single number which is the average power. Best regards, Helmut
By Helmut Sennewald · #90140 ·
Re: Sub circuit heat dissipation not showing
Not an answer to your question, but there is **no such thing** as 'RMS power'. The product of RMS voltage and RMS current with zero phase difference is 'average power'. For pedants, one can calculate
By John Woodgate <jmw1937@...> · #90101 ·