Wednesday, November 23, 2011

Power Bright VC3000W Voltage Transformer 3000 Watt Step Up/Down 110 Volt - 220 Volt

!: Coupon Power Bright VC3000W Voltage Transformer 3000 Watt Step Up/Down 110 Volt - 220 Volt look to

Brand : Power Bright | Rate : | Price : $114.87
Post Date : Nov 24, 2011 05:24:09 | Usually ships in 24 hours


3000 Watt Voltage Transformer (VC3000W) This voltage converter can be used in 110 volt countries and 220 volt countries. It will convert from 220-240 volt to 110-120 volt AND from 110-120 volt to 220-240 volt.

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Wednesday, November 9, 2011

Converters with agent decoupling

Converters with transformer decouplingTransformers are used in power supply units that work directly from AC mains. They are necessary for galvanic isolation of mains load. Mains power source is actually a DC supply which powers DC-to-DC converter into DC voltage with transformer decoupling.There are several types of converters with various power ranges and efficiency. Let's have a look at several converters with their operational principles.This is a model of a single-step reverse converter. Primary winding of the transformer (ie choke, to be precise) is used to accumulate electromagnetic energy, just like in an up-converter. Phasing of windings is opposite to that of a regular transformer. Energy accumulates in the choke core when the key is closed, and the current does not flow in the secondary winding. When the key is opened the current flows in the secondary winding and releases energy into load.A reverse converter is the only model that uses a choke. All other converters use a transformer. The described model has a certain advantage as it does not have an additional smoothing filter. The energy which is accumulated in the choke goes to capacitor and load. In this case ripple voltage is relatively high and thus requires a high-value capacitor.So here we have a single-step forward converter. Current flows in both primary and secondary windings when the key is closed. Current of the secondary winding charges the filter choke, just like in a down-converter. Upon opening ...

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Wednesday, November 2, 2011

Charging Features of Lithium Ion Batteries

!: Charging Features of Lithium Ion Batteries

A lithium ion battery is a competitively used type of cell that exhibits a different kind of charging potential variant from other cells. When powering the device, the electrons are discharged from the negative to the positive terminals unlike when it is being powered where the ions migrate in the reverse direction. This power build up enables it to conserve power for long periods. This is partly due to the diode-like action of the two terminals, which strike a balance in situations of extra power accumulation. This extra voltage, which is more than the energy potential of the device but whose polarity is supportable, is first discharged during use. This overload if read in a meter, would reveal that the device has registered negative polarity which when charging a phone it first loses before turning back to full capacity.

The rechargeable ion batteries usually utilize a combination of several good conductor salts that are merged with lithium bases to create a powerful electrolyte. The performance of these types depends on the metals that have been used together with the principal lithium to create a long lasting cell. However, these components are used in sparing measures to make it safe to use in different devices. The main component cannot be used wholly in its raw form for it leads to great chemical reactions, which may not be supportable by the small size of the device. Other built-in technological features have been incorporated to enhance the potential of these cells.

Rechargeable ion batteries are usually powered by a charger connected by a cable to an electric source that usually increases voltage in the interior of the cell. This creates a reaction inside which forces the passage of the electric power from the cathode to the other terminal. Though they may conserve more voltage than their capacity allows, their diode-like interior mechanics ensure that they cannot explode. This is further enhanced by the careful selection and balanced intermixture of bases in making the product.

Unlike other charging devices, the lithium ion battery does not lose much of its power capacity when inert. Thus, it can be left without being used for a long time and still retain its full charge. Another notable power feature of this cell is that it has convenient portability that is enhanced by the high-energy capacity. This marks it out as exceptional device in its class whose energy capacity is not determined by its size. Though it is relatively small and easy to carry around, it can easily power a device many times larger with guaranteed efficiency.

The easy charging utility of this cell also allows it to be powered severally without depreciating its durability. This short-term charging not only increases its service but also retains memory. It does not lose much of its power when in use or when inert. For the best use of this device and improvement of its utility, it should be powered selectively. The charging character of the device means that one should not overload it but rather power it bit by bit in short sequences.

The many uses of this cell traverse from the typical consumer market to the armed forces. The army relies in the gadget for it is easy to carry around, charge and retain power for long periods of time when one is away from civilization. The most common electronic gadgets in which this charging device is used include cell phones of different types and DVD players.

A lithium ion battery costs between about to more than 0. This depends on the make and the utility of the cell. It is also dependent on the technology that has gone into its making as well as the type of materials that have been used in this process. There are different brands that can be applied to corresponding cell phones and other electronic devices. In this respect, a consumer can obtain an original product such as the LG lithium Ion Battery that is one of the progenitors of this line of smart cells. The large selection in the stores ensures that the customer can find a type that is relevant and applicable to the gadgets they use at home.


Charging Features of Lithium Ion Batteries

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