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Electric Fireplaces BUI LT- I N | HD L I N E A R Just plug in one of our electric fireplaces for instant ambience in any room. All of our Built-in and HD Linear models are CSA tested for safety, fit any room style, and are easy to use. They are cool to the touch but will add warmth to any space. Columbia Corner Surround with Arched Rectangle built-in fireplace front shown in Cherry Stain Finish. A division of the Outdoor GreatRoom Company Electric LINEAR Cool to the touch and warm to the eye This hot fireplace feels cool to the touch, yet, puts out heat when you want it. It hangs like a piece of art – easy to install and sets up in minutes. Place it on any interior wall with an electric outlet. Just plug it in and have a beautiful fire instantly. Model GE-58 Select your ideal fire. Fireplace Features Choose from a large range of options – from fire intensity, to backlighting color, to heat range and more! • Ambient backlighting comes standard on all models. • High efficiency LED on fire and backlighting— Uses only 15 watts. • Operating costs as low as a penny per day with flame and backlighting, and 9-18 cents per hour with the heater on.
APPLICATIONS The LM1949 linear integrated circuit serves as an excellent control of fuel injector drive circuitry in modern automotive systems. The IC is designed to control an external power NPN Darlington transistor that drives the high current injector solenoid. The current required to open a solenoid is several times greater than the current necessary to merely hold it open; therefore, the LM1949, by directly sensing the actual solenoid current, initially saturates the driver until the “peak” injector current is four times that of the idle or “holding” current (Figure 19–Figure 22). This guarantees opening of the injector. The current is then automatically reduced to the sufficient holding level for the duration of the input pulse. In this way, the total power consumed by the system is dramatically reduced. Also, a higher degree of correlation of fuel to the input voltage pulse (or duty cycle) is achieved, since opening and closing delays of the solenoid will be reduced.
Product Folder Sample & Buy Technical Documents Support & Community Tools & Software LM35 www.ti.com SNIS159D – AUGUST 1999 – REVISED OCTOBER 2013 LM35 Precision Centigrade Temperature Sensors FEATURES DESCRIPTION The LM35 series are precision integrated-circuit temperature sensors, with an output voltage linearly proportional to the Centigrade temperature. Thus the LM35 has an advantage over linear temperature sensors calibrated in ° Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scaling. The LM35 does not require any external calibration or trimming to provide typical accuracies of ±¼°C at room temperature and ±¾°C over a full −55°C to +150°C temperature range. Low cost is assured by trimming and calibration at the wafer level. The low output impedance, linear output, and precise inherent calibration of the LM35 make interfacing to readout or control circuitry especially easy. The device is used with single power supplies, or with plus and minus supplies. As the LM35 draws only 60 μA from the supply, it has very low self-heating of less than 0.1°C in still air. The LM35 is rated to operate over a −55°C to +150°C temperature range, while the LM35C is rated for a −40°C to +110°C range (−10° with improved accuracy). The LM35 series is available packaged in hermetic TO transistor packages, while the LM35C, LM35CA, and LM35D are also available in the plastic TO-92 transistor package. The LM35D is also available in an 8-lead surface-mount smalloutline package and a plastic TO-220 package.
KUNCI JAWABAN TUKPD DKI TAHAP 2 MATA PELAJARAN : IPA TAHUN PELAJARAN : 2012-2013 Pilihlah jawaban yang benar! 1. Dua orang atlet mulai berlari dengan waktu bersamaan, dan saat mencapai garis finish dicatat dengan hasil seperti gambar. Selisih waktu antara Atlet 1 dengan Atlet 2 adalah .... A. 45s B. 28s C. 17s D. 11s Pembahasan : Waktu tempuh Atlet 1 adalah 17sekon dan Atlet 2 adalah 28sekon. Selisih waktu kedua Atlet = 28s – 22s = 6s Kunci : # (Anulir) 2. 4. 5. Pembahasan : 3. Termometer dinding yang menggunakan skala suhu Celsius menunjukkan suhu ruang kelas 300C. Suhu ruang tersebut sama dengan .... A. 560F B. 540F C. 620F D. 860F Pembahasan: Persamaan antara skala Celsius ke skala Fahrenheit adalah : 9 9 t oC t 32 o F 30 32 5 5 54 32 86o F Kunci : D Grafik berikut melukiskan pemanasan 3kg air. Jika kalor jenis air 4200J/kg0C, kalor yang diperlukan pada proses R ke S adalah .... A. 12600J B. 126000J C. 252000J D. 378000J Pembahasan: Massa (m) = 3kg, C= 4200J/kg0C dan perubahan suhu (t) = 30 – 10 = 20oC Kalor yang diperlukan : Q = m.C. t = 3kg . 4200J/kg0C . 20oC Q = 126000J Kunci : C
Even if FM radio broadcasting is a fundamental means of communication, it can’t escape one of the big trends in electronics today: miniaturization. As mobile communication devices are gaining more and more functionalities, people still want to have the option of listening to FM radio on their smart phones or MP3 players. This can only be achieved through the miniaturization of the FM reception process by implementing all its functions into a microchip. This miniaturization process is widely used in the industry, but has not been explored in depth by undergraduate students. In order to appreciate the complexity of such a task, we decided to design an FM receiver in a microchip. To make the project more interesting, we chose to create a user interface facilitating its use.
Autodesk Robot Structural Analysis Autodesk Robot Structural Analysis Professional 2009 is collaborative, Professional 2009 is collaborative, versatile, versatile, and fast software compete and and fast software to help youto help you compete global economy. Through building win in the and win in the global economy. Through building information modeling information modeling (BIM), Autodesk (BIM), Autodesk Analysis Professional can Robot Structural Robot Structural Analysis complex models with exceptionally calculate Professional calculates even your most complex models with powerful finite element auto-meshing, exceptionally powerful finite element non-linear algorithms, and a comprehensive auto-meshing, non-linear delivering collection of design codes, algorithms, and a comprehensive hours. Autodesk results in minutes, notcollection of design codes, delivering results Professional Robot Structural Analysisin minutes, not hours. Seamless, collaborative workflow offers seamless, collaborative workflow interoperability with 3D bidirectional and interoperability with 3D bidirectional to Autodesk companion products, links to Autodesk companion products. The together with an open application open application programming interface (API) programming interface (API) provide a provides a scalable, country-specific analysis scalable, country-specific analysis solution solution for a range of structures. These include for are not limited to buildings, bridges, civil but many different types of structures, including buildings, bridges, civil and and specialty structures. specialty structures. ®
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Micr rosoft® E el 2010 Exce 2 0 Custom mizable Trainin Materials ng Qu uick Reference Card e Tel. (888) 9 903-2432 | www.c customguide.com m The Excel 20 Scree e 010 en Keybo oard Shor rtcuts Quic Access Toolba ck ar e Title bar Formula Bar C Close button File ta ab on Ribbo Name e box Col lumns Active cell Ro ows View buttons b Move Betw ween Cells Zoom s slider The Fundam e mentals The File tab menu an Backstage view contain commands e nd w for w working with a pro ogram’s files, such as Open, Save, h Clos New, and Print. se, • To Create a Ne Workbook: Click ew the File tab and select New, and click d Create, or press + . • To Open a Workbook: Click the File O tab and select Open, or press + . • To Save a Wor rkbook: Click the Save button on the Quick Access s ss Toolbar, or pres + . To Preview and Print a Workbo ook: ab Click the File ta and select Print, or press + . • To Undo: Click the k Undo button on the Quick Ac ccess Toolbar, or press + . • To Redo or Re epeat: Click the Redo button on the Quick Access n s Toolbar, or pres + . The ss T last command is repeated if Undo s o was not previou used. usly • To Close a Wo orkbook: Click the e Close button, or press + . o < • To Get Help: Press to open the P n Help window. Type your question and T n press . • Cell addresses: Cells a referenced by are addres sses made from th column letter heir and ro number, such a cell A1, A2, B1, ow as B2, etc. You can find the address of a celll e by looking at the Name Box. • To Se a Cell: Click a cell or use the elect...
Excel 2010 Formulas and Functions One of Excel's most useful features is that it allows users to create custom formulas to perform calculations on their data. Excel also contains built-in formulas called functions that make it easy to perform common calculations on data. Here you will find step by step tutorials, tips and shortcuts on how to use formulas and the common and less common functions available in Excel. Formula Basics Formulas in Microsoft Excel begin with an equal sign. The equal sign tells Excel that the succeeding characters constitute a formula. If you don't enter the equal sign, Excel will treat your entry as text and the calculation will fail. To show how formulas work, we'll begin with a simple exercise by selecting blank cell A1. Then type =5+5, and press Enter. Excel performs the calculation and produces a result of 10 in cell A1. Notice the formula bar shows the formula you just typed. What appears in the cell is the result; what appears in the formula bar is the underlying value, which is a formula in this case.
Let's consider the following example: One has measured the force necessary to extend a spring from its rest (equilibrium position) for various extensions. The goal is to find the spring constant. The theory (Hook's Law) predicts the linear dependence between the force and the change of the length of the spring: F = -kx To find the spring constant k, one needs to plot the negative force -F as a function of x and find the straight-line fit. The slope of that line is equal to the spring constant k. Finding the best straight-line fit could be quite time consuming if done with a calculator. Using Microsoft Excel program significantly simplifies the whole procedure. Follow the steps shown below to make a graph and then draw a straight line that fits your data. A. Start Microsoft Excel 2010 (or Excel 2007). B. Enter your data into Excel spreadsheet. C. Highlight all cells containing data. In our example, the first column (A) contains values of x, whereas the second column (B) contains values of force -F: D. From the "Insert" tab select "Charts - Scatter". Use the first type of scatter charts – “Scatter with only Markers”. You should see a simple plot prepared by Excel. E. Next step is to add axis labels and legend to the graph. Select “Layout” tab from “Chart Tools”. Then add a header using the “Chart Title” button and add axis labels using “Axis Titles” button (both for horizontal and for vertical axes). Optionally, you may edit or simply remove the legend. Grab and drag a corner of the graph (chart) to enlarge its size. F. The last step is to add the linear fit (a straight line fit) to your graph (chart). Click once anywhere inside the graph area. Select the “Layout” tab from “Chart Tools”. Click on the “Trendline” icon and select the “Linear Trendline” option. You should see a graph similar to this: ...