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Hi all - quick bedtime question - I need to plot the group delay of a circuit multiplied by the frequency.? Too tired to work out how to do it, nothing I've tried has worked.? Is there a natty

Then I second Donald's recommendation to look into the free FEMM program. They (FEMM and LTspice) are for different purposes.? LTspice is an electronic circuit simulator.? FEMM is not.? FEMM can be

Group member Alexander Bordodynov (Александр Бордодынов </g/LTspice/profile/3025720>) has modelled a number of non-linear cores, and has a core library. I have no

LTspice doesn't have any built-in models and processes for modelling magnetic circuits in the way you need. It would be possible to write the necessary files, but it would be a major project. -- This

Hi , Thanks for the reply But I want to model it in SPICE model editor and use it in my circuit ,

Routinely thanking the Internet spirits for the wayback machine, which is incredibly useful -- until it isn't. Donald.

I think you might try the FEMM/g/femm/ (Finite Element Magnetic Modelling) /g/femm/ group for this question. That group is dedicated to such issues. Transformers in

My remarks refer specifically to EDN's Design Ideas. This is an extract from the official: Design Ideas Submission Guide

Nice to know it! Thank you so much!

Thank you so much for your help and support, Andy!

Yes, and I posted that I understood the error. -- This email has been checked for viruses by AVG antivirus software. www.avg.com

@Andy See mosfets in weak inversion regions ( /g/LTspice/photo/302220/3915724?p=Created%2C%2C%2C20%2C2%2C0%2C0 ) Did I measure wrongly or had the wrong circuit connections compared to

Have you corrected the position of the OUT node?

Hi , I am trying to model the Ep10 core with T38 material from TDK micronas I have modelled the core but I am not sure whether it is correct or not ? How do I check my model ? Also it would be good if

I am just noting that the required op-amp model file (LM4562_NS.sub) is missing from your uploaded ZIP. UniversalOpamp2 works fine in its place. Andy ( #DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2 )

Perhaps I remember incorrectly.? But I thought all circuit diagrams in EDN articles were re-drawn by EDN's editors.? I do not recall seeing author-drawn schematics in their "Design Ideas" or

From Google, I found at least 3 versions of the 1232-A product manual.? All had scanned schematics, but not all were the same.? One of the downloadable PDFs (pearl-hifi.com) had several copies of

To which, John Woodgate replied: "General Radio" became "GenRad" and might be better known by that name.? Years ago, GenRad was bought out by JET Labs, who re-branded GenRad's products, and the name

I gave not seen RAP's original article. I looked the circuit up using John Woodgate's citation: "Analog Circuits: World Class Designs", edited by Bob Pease, page 236, "Multiple Feedback Bandpass