¿ªÔÆÌåÓý

Date
Analog Switch model with charge injection?
I am looking for a model of, for example, a DG201 analog switch, that models the actual MOSFETS used in the switch. I would like the simulation to show the charge injection that takes place during
By contravalent@... · #72632 ·
Re: Current Step Algorithm
Henry, I was able to figure it out with your help... and got my simulation time down to ~4.25 minutes, a great improvement... but now I at least know that the count table isn't what is slowing me down
By J · #72631 ·
Re: Photodiode
Emre wrote: "so i need photodiode model. But i couldn't found any photodiode spice model." You could have looked for photodiode SPICE models in this group's Files area. There are several there
By Andy I · #72630 ·
Re: Photodiode
If you are trying to simulate the behaviour of a photo diode used as a radiation detector - Good Luck! You can find PSpice models for a number of photodiodes at Vishays home page. But! You can't just
By Dan Andersson · #72629 ·
Photodiode
Hello everyone, I am working about Photo current curcuit so i need photodiode model. But i couldn't found any photodiode spice model. I'll glad for help (i am using bpv10nf-vishay) Emre OZUPEK
By emreozupek@... · #72628 ·
Re: incrementable voltage counter
I think a positive real td is implicit here because if not the CLK input can't be a clock. One of it's phase would be removed and the signal would be static thereafter. Or? - H. Vlad imbvlad@...
By ehydra <ehydra@...> · #72627 ·
Re: incrementable voltage counter
Thanks Vlad! I'm proud of it. One can add limits on both extremes. I upload an example. So add a programmable divider, phasedetector and a VCO and you have a digital PLL.
By ehydra <ehydra@...> · #72626 ·
Re: incrementable voltage counter
I forgot to say it: you should add one of td/trise/tfall/tau/[Rout,Cout] (as Helmut reminded recently) to at least one of the A devices and the inverter. As it is now, it works but, because of the
By Vlad · #72625 ·
Re: incrementable voltage counter
Nice job! If you want to avoid the behavioural voltage (not necessarily, but recommended), you could replace it with an E or a G source with "table(500m,-1,501m,1)" and then you're as fast as it gets.
By Vlad · #72624 ·
Re: incrementable voltage counter
Won't those make for far too many devices compared to Henry's circuit? Vlad ______________________ ltspicegoodies.ltwiki.org -- holding, among others: a universal analog/digital filter, block-level
By Vlad · #72623 ·
Re: PA10M schematic problem (izzydad2000)
I think he replied to his own upload that he managed to fix it, it doesn't appear in normal conversations but in standard "upload" messages. I could be wrong, though. Vlad ______________________
By Vlad · #72622 ·
Re: incrementable voltage counter
Why not a couple of flip-flops (in a cascade counter) and an R-2R ladder? Jim Wagner Oregon Research Electronics
By Jim Wagner · #72621 ·
Re: Current Step Algorithm
Hello Henry, Any flipflop needs a parameter Td and/or Trise. I have mentioned this many times in this forum. Best regards, Helmut
By Helmut Sennewald · #72620 ·
Re: incrementable voltage counter
Hello Henry, Sorry, I forgot it's only a divider, but not a counter. Now I recommend to simply use a chain of D-flipflops for a counter with binary outputs. The mentioned example "A_counter_test.asc"
By Helmut Sennewald · #72619 ·
Re: Current Step Algorithm
I don't think I have the whole overview what do you want! I hopefully don't be killed by bullets from Mike... Here this circuits counts up three-times and then down twice controlled by input CLK and
By ehydra <ehydra@...> · #72618 ·
Re: incrementable voltage counter
Hi Helmut - And it counts 0, 1, 2, 3 at the output line? I cannot see this functionality. - H. helmutsennewald@... [LTspice] schrieb:
By ehydra <ehydra@...> · #72617 ·
Re: incrementable voltage counter
Look for counter_3.zip ! - H. Vlad imbvlad@... [LTspice] schrieb:
By ehydra <ehydra@...> · #72616 ·
Re: LTspice] Re: Simulator stops and crashes the whole computer?!
Something similar happened to my daughter's laptop when she watched movies. The laptop would get very warm and then freeze up. A Google search showed that enough lint would accumulate in the fins of
By Antonio D. Quiroz · #72615 ·
Re: LTspice voltage source
If you are in the market for an actual (physical) waveform generator, then I'd say this question has definitely crossed the line of what is not appropriate for this email group. I'm sure there are
By Andy I · #72614 ·
Re: LTspice voltage source
Ltspice has a nice future which is .step param or sweep. Is there an AWG with such capability as well as ability to optimize parameters based on feedback from outputs? Does not need a customer made
By Sam Jesse <revrvr@...> · #72613 ·