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Space vector modulation (SVM) is an algorithm for the control of pulse-width modulation (PWM), invented by Gerhard Pfaff, Alois Weschta, and Albert Wick in 1982. [1] [2] It is used for the creation of alternating current (AC) waveforms; most commonly to drive 3 phase AC powered motors at varying speeds from DC using multiple class-D amplifiers.
Besides differences in the schema, there are several other differences between the earlier Office XML schema formats and Office Open XML. Whereas the data in Office Open XML documents is stored in multiple parts and compressed in a ZIP file conforming to the Open Packaging Conventions, Microsoft Office XML formats are stored as plain single monolithic XML files (making them quite large ...
It was intended to reduce noise when playing back a film soundtrack. The proposed system had a threshold between "white" and "black" parts of soundtrack. [3] One early application of PWM was in the Sinclair X10, a 10 W audio amplifier available in kit form in the 1960s. At around the same time, PWM started to be used in AC motor control. [4]
In 2000, Microsoft released an initial version of an XML-based format for Microsoft Excel, which was incorporated in Office XP. In 2002, a new file format for Microsoft Word followed. [9] The Excel and Word formats—known as the Microsoft Office XML formats—were later incorporated into the 2003 release of Microsoft Office.
"A Short Preview of Free Statistical Software Packages for Teaching Statistics to Industrial Technology Majors" (PDF). Journal of Industrial Technology. 21 (2). Archived from the original (PDF) on October 25, 2005.
Office 4.0 Word 6.0, Excel 4.0, PowerPoint 3.0, Mail 3.1 June 2, 1994 Office 4.3 Word 6.0, Excel 5.0, PowerPoint 4.0, Mail 3.2, Access 2.0 Final 16-bit version. Last version for Windows 3.1x and Windows NT 3.1. July 3, 1994 Office for NT 4.2 Word 6.0, Excel 5.0, PowerPoint 4.0, Office Manager Office Manager included. Last version for Windows NT ...