Thank you ! (was: New user: how to edit digital models?)
Thanks again to Helmut and Peter. My digital design works now very well, with "real world" parameters. Christian
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neel_christian <[email protected]>
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#524
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Re: "Timestep too small" error while simulation
Rainer, It means the solver failed to converge for the circuit. Usually you have to change some aspect of the circuit to get it to run right. The 1533 is pretty complicated since it controls the slew
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Mike Engelhardt
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#523
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"Timestep too small" error while simulation
Hallo, I'm using scad3 for a few weeks and I'm very happy about the power and speed of simulation. Now, I tried a more complex simualtion with a LT1533 (I modified the sample) and got the following
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bahrrainer <[email protected]> <robot@...>
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#522
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Re: Analog MUX
--- In LTspice@..., "Helmut Sennewald <helmutsennewald@y...>" <helmutsennewald@y...> wrote: Sorry, I forgot the test circuit file. Helmut My test circuit(lv_4051.cir).
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Helmut Sennewald
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#521
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Re: Analog MUX
<sahawley@m...> wrote: it functional Hello, unfortunately I don't know any other source of SPICE model for this part. The behaviour looked indeed strange. It was ok with static driven control input,
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Helmut Sennewald
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#520
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Analog MUX
I was looking around for a model of a low voltage MUX like the 74lv4051. I found a a 6 pin fragment in the Philips LV library (http://www.philipslogic.com/support/spice/) called SWI1. I wired it up
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polapart <[email protected]> <sahawley@...>
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#519
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Re: Hierarchical schematics
Hello Mike, thank you very much for the work on solving the .lib problem in
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Helmut Sennewald
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#518
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A small correction for the CD4093 model
Please, change in the schematic CD4093.asc and symbol CD4093.asy node name gnd to G. It is universal, you can shift the level of the "GND" node. Peter
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Peter Kapas <pkapas@...>
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#517
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Re: Digest Number 23
Hi Neil /New user: how to edit digital models? ----------------------------------------------- Try these: CD4093.asc ------------------------------------------------ Version 4 SHEET 1 892 692 WIRE 288
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Peter Kapas <pkapas@...>
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#516
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Re: New user: how to edit digital models?
<neel_c@c...> wrote: is, Hello Christian, I forgot a very important detail. You have to specify some delay Td for every flipflop. All my simulated counters and flipflops have run as expected only when
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Helmut Sennewald
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#515
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Re: New user: how to edit digital models?
--- In LTspice@..., "Helmut Sennewald > Thank you very much Helmut, In the meantime, I debugged my digital design (a simple FSM) on another mixed-mode simulator (evaluation version of
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neel_christian <[email protected]>
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#514
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Re: New user: how to edit digital models?
<neel_c@c...> wrote: fun Hold (like Hello Christian, new glasses wouldn't help. I had the same question half a year ago. The developer of LTSpice, Mike Engelhardt, kindky send me the necessary
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Helmut Sennewald
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#513
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New user: how to edit digital models?
Hello Group, I discovered LTSpice a few days ago and I find it very usefull, fun and easy-to-use :-) I am now trying to use mixed-mode simulation, and I cannot edit nor see the models of simple parts
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neel_christian <[email protected]>
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#512
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Re: Some basic uestions
the You can use the standard resistor and capacitors model statements. It should be able to understand both Berkeley and PSpice syntax. (diode,resistor,capacitor...)? Absolutely not, but there isn't
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Mike Engelhardt
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#511
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Some basic uestions
Hi everybody, I am a new user of LTSpice. Looking into the model list I am not able to find the models for a semiconducor (diffused) resistors and capacitors. They are not very important but some
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Massimo Gaspari
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#510
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Re: Need a model for a gas discharge tube (spark gap) and general help.
Try http://www.ee.bgu.ac.il/~pel/pdf-files/conf69.pdf Their may be something there you can use. Regards Brian -- Brian Howie | Tel: 0131 343 5590 BAE SYSTEMS | Fax: 0131 343 5050 Sensor Systems
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brian.howie@...
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#509
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Re: Need a model for a gas discharge tube (spark gap) and general help.
<helmutsennewald@y...>" <helmutsennewald@y...> wrote:
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bunnyblues2001 <[email protected]>
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#508
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Re: Need a model for a gas discharge tube (spark gap) and general help.
<bunnyblues2001@y...>" <bunnyblues2001@y...> wrote: comes Hello, are you referencing this model? http://www.intusoft.com/nl50.htm#SPARK%20GAP%20MODELING It contains lines with non LTSpice syntax.
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Helmut Sennewald
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#507
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Need a model for a gas discharge tube (spark gap) and general help.
I need a model for a gas discharge tube similar to the Siemens A81- C90X, if anyone can help I'd appreciate it. I have just started to use LTSpice and would like to know if there is any information
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bunnyblues2001 <[email protected]>
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#506
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Re: Hierarchical schematics
I put up a version today(2.00t) that enables nested subcircuit definitions. Initial tests suggest the parameter passing is properly scoped. Please report any problems or crashes as soon as you detect
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Mike Engelhardt
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#505
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