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Generation and implementation of sine wave table
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You can download it in PDF format here: http://ifile.it/84hw0eg
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PWM is used in all sorts of power control and converter circuits. Some common examples include motor control, DC-DC converters, DC-AC inverters and lamp dimmers. There are numerous PWM controllers available that make the use and application of PWM quite easy. One of the most popular of such controllers is the versatile and ubiquitous SG3525 produced by multiple manufacturers – ST Microelectronics, Fairchild Semiconductors, On Semiconductors, to name a few. SG3525 is used extensively in DC-DC converters, DC-AC inverters, home UPS systems, solar inverters, power supplies, battery chargers and numerous other applications. With proper understanding, you can soon start using SG3525 yourself in such applications or any other application really that demands PWM control. Before going on to the description and application, let’s first take a look at the block diagram and the pin layout. Pins 1 (Inverting Input) and 2 (Non Inverting Input) are the inputs to the on-board error amplifier. If you a...
In many situations, we need to use MOSFETs configured as high-side switches. Many a times we need to use MOSFETs configured as high-side and low-side switches. Such as in bridge circuits. In half-bridge circuits, we have 1 high-side MOSFET and 1 low-side MOSFET. In full-bridge circuits we have 2 high-side MOSFETs and 2 low-side MOSFETs. In such situations, there is a need to use high-side drive circuitry alongside low-side drive circuitry. The most common way of driving MOSFETs in such cases is to use high-low side MOSFET drivers. Undoubtedly, the most popular such driver chip is the IR2110. And in this article/tutorial, I will talk about the IR2110. You can download the IR2110 datasheet from the IR website. Here's the download link: www.irf.com/product-info/datasheets/data/ir2110.pdf First let’s take a look at the block diagram and the pin assignments and pin definitions (also called lead assignments and lead definitions): Fig. 1 - IR2110 block diagram (click on image to enlarge)...
One label for this post is "First and Last," but the subject actually is "Last and First." In this case, the final pre- World War 2 Aston Martins and the postwar models when David Brown assumed ownership of the firm. General Aston Martin background is here , that of the postwar "DB1" (a retroactive designation) is here , and for the 1950-vintage DB2, here . Aside from modernized styling, postwar Astons featured the "A" form grille design that the marque has continued with detail variation until this day. But even that feature had prewar origin in the form of a prototype/concept car, the Aston Martin Atom that was first displayed in 1940. Gallery 1938 15/98 Sports Tourer - Bonhams photo An example of the last prewar Aston. Styling is 1933-ish, but still prevalent in late-1930s England. The grille design was abandoned following this model's end of production. 1939-1940 Aston Martin Atom prototype/concept - Bonhams photo The idea was to ex...
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