Category Archives: LT SPICE IV

Eaglecad 6.4.0: the new LTspice IV import/export capabilities

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Eaglecad 6.4.0 has been released and now we have available a very useful feature: we can import and export schematics and libraries between Eaglecad and LT SPICE IV with a single mouse click. As usual Eaglecad is available for windows, linux and mac; you can download the latest version for your operating system here: http://www.cadsoftusa.com/download-eagle/?language=en

The first thing you’ll see after update to the latest Eaglecad version is the LTC SPICE icon, visible on the right in the “Command texts” bar:

LT_ICONLet’s see a simple example which shows a simple solid state digitally controlled delayed switch:

DELAYED_SWITCH Continue reading →

Compact overvoltage, undervoltage, reverse protection with LTC4365

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There are many circuit simulators available which are based on the original SPICE (Simulation Program with Integrated Circuit Emphasis) code developed at Berkley university at the end of ’60. Linear Technology developed their own version called LTSPICE IV very useful when you need to simulate circuits which use components made by LT. LTSPICE IV can be downloaded free of charge from http://ltspice.linear.com/software/LTspiceIV.exe. Let’s see how is possible to design a very fast overvoltage, undervoltage and reverse protection using few components (the pictures have been extracted from the official datasheet available at http://cds.linear.com/docs/Datasheet/4365f.pdf and from LTSPICE IV available at http://www.linear.com/designtools/software/#LTspice):

Continue reading →