121 Electronic projects - download pdf or read online

121 digital tasks КНИГИ ;АППАРАТУРА Название: 121 digital initiatives Формат: PDF Размер: 12 MbCтраницы: sixty five Язык: English Сборник схем. Книга из серии МРБ.com. zero

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The sequence of operation is from left to right or from top to bottom. The most frequently used grouping of a control-display should be located so that they are readily accessible to the operator. Groups having different functions should be set apart by coding or framing. The display indicator should direct and guide the appropriate control response clearly, and the response of a display indicator to control movements should be consistent, predictable, and compatible with the operator's expectations.

8 Figure 3·4. (Continued) exceed 28 in. Otherwise, there is no maximum limitation except that imposed by the available space, provided that the display can be read adequately. The minimum viewing distance should never be less than 13 in. and, preferably, not less than 20 in. 2 aUSAF dimensions not comparable with USA and USN dimensions. Figure 3-5. Circumference and surface dimensions, in inches. ment or system conditions. Therefore, the display must be designed to accommodate the particular conditions under which it will be used, the method of use, and the purpose it is intended to serve.

Heat transfer will occur through fins inserted between the rows of functional blocks and will provide a conductive thermal path directly to the external surfaces. Encapsulation of the functional blocks in a silicon potting compound will be employed to eliminate thermal ''hot spots" and will considerably improve the heat transfer. In addition, the use of nickel leads throughout the matrix will improve the removal of heat and provide additional dissipation surfaces. The level of field service will be at the functional block level.

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121 Electronic projects

by Donald

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