开云体育

I don't think there is anything foolproof but I will try to explain the working of the circuit. It applies a constant current to the gate of the MOSFET. The x-axis displays the product of that

When I adapt models with bad diodes, I replace the diodes with LTspice diode.

Actually, these messages are a red flag. They mean that your model might not work as expected. Model makers frequently resort to diodes with very small emission coefficients in order to create diodes

Ah, Rene. Welcome to planet engineering, where ambiguity is less than useful. Andy provided a clear example of how d/s might be otherwise interpreted, which ambiguity would have been easily avoided by

I fixed that in in the updated model. Christopher saw it again because the hard-coded symbol overrode the .lib directive. -- Regards, Tony

Hello Dennis, Thank you so very much for sharing your mosfet gate charge ( /g/LTspice/files/z_groups.io/Files-sorted-by-message-number/msg_ZZZZZZ/mosfet%20gate%20charge.zip ) file. It

I’m using LTspice 17.1.14. Not worried about pursuing this further if I don’t need to be. Thanks for all the help. Sent: Sunday, April 6, 2025 2:22 PM To: [email protected] Subject: Re: [LTspice]

To clarify -- Not one of those is an error message. The first four are status messages saying that the diode's N coefficient value was limited by LTspice.? The fifth line is a status message saying

Thanks Andy, for the explanation. I’ll look again. Those three commands did come up, but when I did a control F and entered round, nothing came up. I’ll look again. Sent: Sunday, April 6, 2025

Hi Tony, thanks. I extracted your zip file into a folder and ran your .asc from there. Would you still recommend your 1st paragraph to fix the problem? “The ideal current source causes the LM317A

Those error messages will continue.? It concerns a diode parameter N, which had been set to an extremely small value.? Until recently, that was accepted by LTspice despite being unreasonably

Aah. I think LTspice didn't update the symbol reference in the schematic. Delete the LM317A symbols from the schematic and reload the replacement symbol LM317A.asy. It sounds like the old symbol was

Thank you, Tony, for the corrected Lib file. I got the file I was using from one posted this year in the user’s temp folder. Maybe you’d like to post an update? I intended that RL2 have 10mA

I fixed all the anomalies in the TI LM317A model, so there are no errors or warnings. I also implemented the small changes in PSRR. The reason your 2 circuits deliver different results is that 2nd one

To help you, we meed more information. What sort of circuits are you studying? Switch-mode power supplies? RF amplifiers? Washing machines? -- This email has been checked for viruses by AVG antivirus

OK, thanks, I’ll try it. Sent: Sunday, April 6, 2025 12:20 PM To: [email protected] Subject: Re: [LTspice] Simulation runs very slowly: test.asc Yes, because that only works for .AC simulation,

Yes, because that only works for .AC simulation, which assumes that everything is linear, and that is unlikely to give you the correct result for PSRR. -- This email has been checked for viruses by

Hello , My name is Mario Martinez , i want to know about sumulation circuits of squematics what represented for analisys of energy quality and energy efficient , i am ecuatorian

The LT1083 comes in my standard library. If I substitute it for the LM317, I get no error messages. The PSRR is till poorer for OUT2. Do you still think configuring V1 as I did is incorrect? Sent:

Your LM317A_TRANS symbol has the path on your computer to the model hard-coded in its Attributes. OK, that can be fixed, but you should be aware of this pesky feature that causes trouble every time