Typical industrial and automotive applications requiremultiple high current, low voltage power supply solutionsto drive everything from disc drives to microprocessors.For many of these applications, particularly thosethat have size constraints, the LT3501® dual step-downconverter is an attractive solution because it’s compactand inexpensive compared to a 2-chip solution. The dualconverter accommodates a 3V to 25V input voltage rangeand is capable of supplying up to 3A per channel. Thecircuit in Figure 1 produces 3.3V and 1.8V.
The TL2575 and TL2575HV represent superior alternatives to popular three-terminal linear regulators. Due totheir high efficiency, the devices significantly reduce the size of the heatsink and, in many cases, no heatsink isrequired. Optimized for use with standard series of inductors available from several different manufacturers, theTL2575 and TL2575HV greatly simplify the design of switch-mode power supplies by requiring a minimaladdition of only four to six external components for operation.
Displaying a large bitmap file on a dialog box, in its original size, is quite difficult in the VC++ environment. However, it is possible to display a large bitmap to a predefined area of the dialog by using the StretchBlt( ) function.The major disadvantage of this is that the clarity of the image will be lost. Check out this article for displaying large bitmaps into the desired area of your dialog box in its original size with a scrolling technique used to show the entire bitmap. 滾動顯示位圖 在VC++環(huán)境下，在一個對話框中顯示一個原始尺寸的大小的位圖文件相當(dāng)是困難的。然而,通過使用 StretchBlt()函數(shù)一個給定的區(qū)域顯示一個大的位圖是可能的。主要的缺點(diǎn)是圖像將會失真。看了這篇通過卷動技術(shù)顯示整個位圖技術(shù)的文章，你將能夠以它的原始尺寸在給定對話框的區(qū)域內(nèi)顯示一個大位圖。 來源: http://www.codeguru.com/bitmap/ScrollBitmap.html
