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Tony wrote: .. the measured duty cycle (at the 50% points) is a non-linear function or Ton/Per, being 0.55 at Ton/Per=0.5. This is the reason why to set a 50% actual duty cycle: Ton = (Per - Trise -

Hi, Does anyone have a spice model for the NTE618 varactor please? Failing that, any other high-capacitance varactor such as the MVAM108 family? Thanks, Chris.

Hari K, The Description for the file you uploaded also asks this question, "How can I add the parameters like VCC, Speed, tripdt1 in the simulation file I have added it in the symbol itself(as seen in

Hari K's file "wakeup.asc" is about this: I have trying to simulate the parallel in serial out shift register 74HCT165 with the library downloaded from this group (74HCT.lib) but I can't complete the

Did you check out any of the example schematics that show how to do this? There is also a Help file. Have a look here: Digital 74HCTxxx (

Hello All, I have trying to simulate the parallel in serial out shift register 74HCT165 with the library downloaded from this group (74HCT.lib) but I can't complete the simulation as there is a

harikrishnan.k uploaded a file "wakeup.asc" to the Temp folder, but forgot to include the models, forgot to include the symbol, and forgot to send a message. harikrishnan.k, please go back and READ

Thanks, Tony.? Per-Ton = Toff+Trise+Tfall. ====================================================================================== Best wishes John Woodgate OOO-Own Opinions Only www.woodjohn.uk

Trise = Tfall = min(Ton/10, (Per-Ton)/10) .. would be a more succinct way to express it. Thanks for dragging it out of me. ? -- Regards, Tony

Good, but what does 'the law is mirrored' mean? ====================================================================================== Best wishes John Woodgate OOO-Own Opinions Only www.woodjohn.uk

I have uploaded a test schematic </g/LTspice/files/Temp/Rise_Fall_Times.zip> that measures the actual rise and fall times of a pulse source with default rise and fall times, i.e. both

Hello All Bonkers wrote: Why only the ONE little air blaster? Forgive me, I took a bit of dramatic license. That plant was completed in 1954 and I would assume that there were FMEA analyses performed

Dave, If you're talking about risetime, it can be quite a lot smaller than 100 fs.? I would say arbitrarily small, but eventually you reach the limits of double precision math.? Remember not to let

I dug out the test case, and tried down into femtoseconds. Best I could get was 100fs for a setting of 100fs Dave Sent: Friday, July 14, 2023 1:06 PM To: [email protected] Subject: EXTERNAL: Re:

SPICE used "0" to tell it to apply a default value.? It is most apparent with Trise and Tfall, but it works in a number of other places too.? Typing 0 can even mean "infinity" in a couple of places,

Andy wrote: “Remember to never set Trise or Tfall to 0. That signals SPICE (and LTspice) to substitute non-zero default values, and they won't be anywhere near 0. It's a SPICE thing.” Indeed! I

Handling a pulse that is only 0.7 ns wide is certainly a challenge.? For SPICE simulations, if you were to use 1 ns rise and fall times, and if you say that the desired pulsewidth is 0.7 ns at the

Hi guys- Thanks a ton for your continued support. Tony posed the question about what my requirements really are. Here are the most relevant: * Overall, my goal is to have enough of a response so that

For some reason, the examples\jigs folder has been redesignated as examples\Applications in LTspice 17.1.x. -- Regards, Tony

Thanks, Udo I have found the example , look to work OK ,