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Hello, A photo diode is simply a large area diode. The large area results in large capacitance Cjo. The incident light will be converted to current in the photo diode. Thus the second part of the

Hello, The most simple solution will be one or two capacitors. One between the control voltage and the switch-input and the other between the control voltage and the switch-output. You can add some

Hi JH - Sorry, I can't help you because it looks to complicated what you have done. Maybe it helps if you post the whole circuit. Even then the result thru help is not a whole faster reconfiguration

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

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

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

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

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

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@...

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.

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

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.

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

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 ______________________

Why not a couple of flip-flops (in a cascade counter) and an R-2R ladder? Jim Wagner Oregon Research Electronics

Hello Henry, Any flipflop needs a parameter Td and/or Trise. I have mentioned this many times in this forum. Best regards, Helmut

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"

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

Hi Helmut - And it counts 0, 1, 2, 3 at the output line? I cannot see this functionality. - H. helmutsennewald@... [LTspice] schrieb:

Look for counter_3.zip ! - H. Vlad imbvlad@... [LTspice] schrieb: