Choosing between transformer-based or transformerless uninterruptible power supplies may not be a simple ‘either/or’ decision, particularly above 10kVA. Both technologies have their place in today’s power protection scenarios but the key differences between them are: physical size, efficiency, noise output and the levels of input harmonic distortion that they generate. Both uninterruptible power supply designs produce a tightly regulated source of uninterrupted power but they differ in the way they generate the dc voltage required by their inverters and their output stages. Transformer-based Uninterruptible Power Supplies: until the early 1990s, the only design of online uninterruptible power supply was transformer-based. Nowadays, the design is still available but generally in larger sizes for UPS from eight to 800kVA. The most… Read More…
In 1999, Mitsubishi and Toshiba put forth a joint effort to construct a convenient means to store digital files for camcorders and computers. The result was the inexpensive SD Memory Card. These SD (Secure Digital) cards all but took the place of the Multimedia Card (MMC), having for the most part and noticeably faster transfer rates as well as a high-density storage capacity. The conventional transfer rate for the cheap SD memory card is six times faster than the typical CD-ROM, with a speed expending at 66x (1.01 specification). The higher speed SD memory card, though, possesses a 133x speed (1.1 specification), enabling data transfer of complex audio/visual files to proceed and save in mere microseconds. The standard data… Read More…
People in generally like to have their homes looking really great. To this end they will look for various pieces of furniture, accessories and display cabinets to add beauty to their homes. For their TVs people buy hutches, stands, display cabinets. This range of accessories can be widened with a plasma TV. For our Plasma TV stands in a variety of shapes, sizes and types are available.
These stands will be constructed of heavy and stable material as the plasma TVs are very fragile despite their appearance. The many different plasma TV stands can be made in traditional forms like a display cabinet, wall mounts and even stand mounts.
The display cabinet plasma TV stand is shaped like… Read More…
What is your approach of buying a Plasma HDTV? Did you take any help while buying your plasma TV set? Or, if you are thinking of buying one, what will be your source of information for that? Well, most people opt for the Plasma HDTV reviews before investing in one of the Plasma TVs. Nine out of ten people turn to the Internet to find latest Plasma HDTV reviews and information. Basically, these Plasma TV reviews are about the product specifications and unique features of the Plasma TVs along with their positive and negative aspects. But the real question is whether the plasma TV reviews are of use for the buyers. Considering the nature of the Plasma HDTV reviews… Read More…
