As part of the license management system, our main technical programs make an Internet check of the computer activation status. Setting up an activation setup is largely automatic on most computers, requiring little user effort. Some manual operations are necessary if the user’s computer is on a company network with a proxy server. This posting reviews [...]
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An update of our software installation packages involves uploading 42 files with sizes that range from 20-120 MB. Each file must be placed in a different directory on our server. An FTP program like FileZilla is useful for day-to-day file updating, but lacks script operation features. In this case, an update would involve a tedious process [...] A customer working with RFID devices asked me about finding magnetic flux inside a detector coil surrounded by an array of drive coils. The drive coils may move around or rotate. There are no iron structures. The calculations are fast and easy using the free-space mode of Magnum. In this post, I’ll review the required techniques.
We recently added the capability to save and to load plot views (discussed in a previous post) to our two-dimensional TriComp field programs (EStat, PerMag, EMP, Nelson, TDiff, Pulse, RFE2 and WaveSim). In the interactive environment, the Save view command generates a formatted text file FPrefix.FPV where FPrefix is a descriptive name assigned by the user. [...] Although Magnum and PerMag are magnetostatic codes, they can often be used to find AC magnetic field distributions (e.g., transformers and motors). A static field calculation provides a good approximation when the electromagnetic wavelength is much larger than the system scale length. The issue is complicated by the presence of iron and steel, because the speed [...] |
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