Organic Anti Beat Box Band

defgf83tu

Distance education in rural primary and secondary power supply problem

Lectures and to ensure better teaching results, and some need to increase the projectors and other equipment, as shown in Figure 11. Therefore, the reliability requirements of its power supply will be higher,[link widoczny dla zalogowanych], so the long delay with the above measures of redundancy and more necessary. UPS capacity here will be greater use of some of the current general greater capacity to adapt to UPS input voltage range will be relatively smaller, which is precisely where the power supply condition is not ideal, so in addition to select as before UPS to adapt to harsh environment, but often also need to add a UPS in front of the AC voltage regulator to ensure that the UPS to create a good working environment. Regulators should NPS intelligent power supply is preferred, because it is a new technology is to summarize the current advantages and disadvantages of several regulators of the Delta transform and absorb the experience and developed the patented product . This circuit uses both the PWM current mature technology, but also combines the Delta Conversion Technology UPS. This power to resolve the current regulator by several problems: (1) Delta transform the draws, so it has some advantages, such as high input power factor above 0.95, higher than the parameters of the regulator was more. (2) and high efficiency. From the circuit structure can easily see that it is to focus on the advantages of the automatic voltage regulator. And fast response, automatic voltage regulator which in turn is unmatched. (3) input-output isolation and good performance. This is another focus of the parameters of voltage regulators and the advantages of clean power. Because reactive power does not work in the store, so there is no problem destroying other equipment. A power cut took plpUr chop Portugal - |. 1 projection screen, bamboo fish trap ink l2 Ridge Letter of the entire CD! Soup {a total heron: shed. A one by one =. IL ! One by one under the ■ ... I I_ Grub TV% a splitter IIb Tl ● ● l day for a heavy atmosphere Yan B 1 was lI 『sweet card for a satellite data receiving port l ■ Si Ching I carved two modems I snapped the disc , [mane of a party leadership ll_-wide Internet Timothy Fok AC voltage regulator IIl Science: turning the bag, fight - ・-0l ■ ■ ■ I '■ ■ ■ I-l ■ ------ J ∞ ■ basis of a lightning equipment. ■ ■ ■ _ ■ ■ _l | ■ ■ ■ ■ ■ ■ I Figure II multimedia integrated classroom or audio-visual hall (shown in dotted line for the power cord) (Continued from P.52) automatic constant current charging. Then when the first constant current constant voltage charging these are run automatically,[link widoczny dla zalogowanych], meaning that one-tenth of the battery capacity is the maximum current to the battery to charge up to a constant as the battery voltage (battery voltage), then constant charge, the charge current gradually decreased to zero automatically charge the end. Chance of damage to this part of the circuit is not great, as long as the number of panels to observe the instructions UPS status, generally very safe. However, some brand UPS's circuit in the design of automatic monitoring, automatic protection, component selection, power capacity flawed, this part of the circuit is prone to failure. When the battery charger into the inverter,[link widoczny dla zalogowanych], due to the size of the load variable, so variable discharge current, voltage drop must slow rate variable, but the discharge current within the rated power can be limited to a certain range, over range, once the alarm or interrupt protection. It should be said that they are safe, however, the failure rate is precisely the most part of the circuit, because the automatic monitoring and other related circuit, however, the load caused by too much. UPS should also be noted for the car shock treatment, stable fixation. To the battery charge is often a hand to touch the hot,[link widoczny dla zalogowanych], is there burst phenomenon, a test battery with a multimeter measuring voltage, the battery is securely connected between the positive and negative, there is no cure phenomenon, whether the electrode contacts with screw terminals tight, after a long bumpy if loosening must be regularly checked. In addition, maintenance of UPS in the process of several brands and found that some brands of UPS in order to reduce costs, reduce size and weight, the circuit is only concerned about the neglect of the input inverter circuit jamming circuit, charging circuit and the automatic detection, over-current over-voltage protection circuit. Some brands in the input circuit that the introduction of anti-interference circuit, but do relatively simple, relatively poor ability to effectively suppress interference, and some brands in order to reduce the weight of the output without the use of isolation transformers, power control directly from the output to output, this weight reduction, cost reduction, but the output balance variation,[link widoczny dla zalogowanych], the voltage between zero and the ground becomes larger, the greater the impact on the load. Especially lOkVA three-phase input three-phase output of the above problem is more prominent these models. UPS rescue vehicle in the future, operational training will be more and more widely used. A good quality, high stability of the UPS, power quality for a lot of equipment is operational, command, communication system stability \■ Lun
More articles related to topics：

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]