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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...
I had previously shown how to drive N-channel MOSFETs in low-side configuration. You can find the tutorial here: http://electel.blogspot.com/2016/12/low-side-mosfet-drive-circuits-and_23.html I’ve been requested to write a tutorial/article regarding high-side MOSFET drive. So, here I’ll talk about N-channel MOSFET high-side drive. Let’s first look at the common low side configuration. Fig. 1 - N-channel MOSFET configured as low-side switch Now let’s look at a MOSFET configured as a high-side switch. Fig. 2 - N-channel MOSFET configured as high-side switch You can quite easily see the difference between the high-side configuration and the low-side configuration. In the low-side configuration, the load is connected between the drain and +V, while the source is connected to ground. Thus, the gate drive is referenced to ground. So by applying a voltage of >7V (for Power MOSFETs) or >4V (for Logic Level MOSFETs), the MOSFET can be fully turned on. Now let’s talk about the high-si...
By 1990 General Motors was on its path from industry dominance to bankruptcy. Ford's aerodynamically influenced 1986 Taurus was a marketing success that required a response from GM. That response was in the form of its new W Platform . Coupes appeared for the 1988 model year, sedans following for 1990. The present post deals with the sedans. These were the Chevrolet Lumina , Pontiac Grand Prix , Oldsmobile Cutlass Supreme and Buick Regal . Shamed by the lookalike 1982 A Body line, GM made an effort to have W Body cars for each brand look distinctive. Some details are discussed below. Gallery Chevrolet Lumina Euro I owned one of these during my time as demographic forecast supplier to GM. The basic Lumina had a different grille and no trunk lid spoiler. Pontiac Grand Prix This car had a slightly higher beltline and six-window passenger greenhouse. Rear door cutlines differ. Oldsmobile Cutlass Supreme The basic body here is similar to the Lumin...
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