Jigsaw clamp. Drawing, description

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Jigsaw clamp. Tips for the home master

Builder, home master

The jigsaw is perhaps the most popular tool in the workshop of a home craftsman and in the laboratory of a modeler. Meanwhile, its design has remained unchanged for decades, but this does not mean at all that it is ideal.

A lot of trouble delivers, for example, a screw wing clamp. The dimensions of the "lamb" are clearly insufficient to twist it by hand, but it is impossible to make it large: it will interfere with work. Tightening the wing nut with pliers is a sure way to ruin it in the shortest possible time.

Make the simplest eccentric clamp - and all these problems will stop worrying you. It consists of only three parts, not counting the rivets and the bolt. First cut the eccentric slightly fuller than required, and then bring it to the optimal size by successive adjustments - while the file must be securely clamped, and the eccentric lever must be clearly fixed in two extreme positions.

Jigsaw clamp

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22nm transistor 26.12.2012

Specialists of the Institute of Microelectronics of the Chinese Academy of Sciences (IMECAS) in Beijing have created a field-effect transistor with a gate length of 22 nm. The transistor uses HKMG (high-K metal-gate) technology. The development is said to be the key to creating more advanced chips, which will allow China to save on imports of high technology and increase the competitiveness of Chinese chips in the global market.

Project participants note that they managed to achieve "world-class performance and low energy consumption." Recall that Intel, which has the most advanced technologies for the production of microcircuits, now produces processors using 22-nanometer technology. Major contract manufacturers such as TSMC and Globalfoundries have not yet commercialized such technologies and are now manufacturing products in 28nm.

For many years, China was unable to gain access to advanced semiconductor manufacturing technologies, as their export from Western countries was limited first by the activities of the CoCom committee, and then by the terms of the Wassenaar Arrangement. However, by supplementing its own developments with licensing, China has managed to move quite far.

Currently, the leading Chinese semiconductor contract manufacturer Semiconductor Manufacturing International manufactures products using 40nm technology. Up to 65 nm, the company developed technical processes independently. To avoid the expense of building its own 45nm technology, SMIC licensed it from IBM in late 2007. In 2008, the Chinese manufacturer included in its plans the development of 40 and 32 nm standards.

Work on the creation of 22-nanometer transistors was started in China in 2009 as one of the main national scientific projects.

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