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Fri, Dec 27 2013 Search was off for around a month, suddenly today it started working again. For how long is anyone's guess. Mike

Please upload the schematic for your 556 timer circuit to this groups Temp folder and provide some detail about you want the the timer circuit to do. A schematic diagram greatly improves the odds of

I wanted to simulate in real time what the kids were seeing when their circuits are operating in front of them. I have been learning the Simulator by trial and error with existing circuits that we

Thanks Andy, Yes, the IR2153 Model seems questionable at best. I will try some of your suggestions. Thank You. Donna

Thanks Andy, I will try a few of your suggestions. Thank You Donna

'grampastentis' wrote, "The LTSpice simulator is running in milliseconds and I would like to run in seconds instead." It's not clear what you are asking. You have received two responses so far, both

A few other suggestions: There are SPICE models for other IR21xx driver components (not the IR2155) which you might try. You can find them in the Files section of this group. IRF also has a collection

Sorry; when I saw your first message, I didn't notice the name of the model it was looking for was "Dead_Time.sub". The question about "Dead_Time.sub" has come up before. The problem is unresolved.

Hi John, No, there is no file called "Dead_Time.sub" in the downloaded zip file. Any help locating this file would be appreciated. Donna

Hi John, No, there is no file called "Dead_Time.sub" in the downloaded zip file. Any help locating this file would be appreciated. Donna

In message <l9kpmp+p6b0fl@...>, dated Fri, 27 Dec 2013, grampastentis@... writes: If you mean it's 'flashing' in milliseconds, you probably have a wrong resistor or capacitor value.

In message <l9kqs5+kbtnei@...>, dated Fri, 27 Dec 2013, seenthis1@... writes: Can you see a file called that in the folder where you have the .asc? If it was not in a .zip archive

Hi Andy, Thanks for the reply. Yes I have the schematic in the same folder as the model files but still no luck. I get the same problem when I try to run the IR2153_IC asc supplied with the model

You generally cannot specify the time step in spice simulators in general or in LTspice in particular. The simulator takes big time steps when things are changing slowly and small steps when the

I have a circuit that uses a 556 and a variable resistor to output to an LED 2 to 10 times per second. The LTSpice simulator is running in milliseconds and I would like to run in seconds instead. I

Donna wrote: "Hi, I downloaded the IR2153 Model from the Library but I have an issue when trying to run the simulation? I get a message saying: Could not open library file "Dead_Time.sub" I can't seem

... thanks for the suggestion. I'll check it out! greeting Jürgen

Hi, I downloaded the IR2153 Model from the Library but I have an issue when trying to run the simulation? I get a message saying: Could not open library file "Dead_Time.sub" I can't seem to find this

Micha, I don't think .savebias/.loadbias will help you much, but they shouldn't cause an convergence problems. You need to explain more clearly what you want to do. Rick

Hello Dale, It's intentional as it is. Please read also my other comments in the Files section.. http://groups.yahoo.com/neo/groups/LTspice/files/MAC/Functions%20in%20different%20places/ Special hints