Cautions in the Use of Mobile Power

Cautions in the Use of Mobile Power The following precautions are just for reference, if you need to understand the specific use of mobile power and precautions, you would better see the relevant instructions and there will be a more detailed description above.

The precautions are as follows:
1, Do not drop, knock, or shake the Iphone External Battery
2, do not place the mobile power into the water
3, we should avoid exposing it under the sunlight or rain for a long time
4, do not store or carry flammable liquids, gases or explosives in the vicinity of mobile power.
5, only the “CBA” original mobile power charger can be used. The use of other electrical will easily damage the mobile power, or cause overload, and it may cause damage to your battery.
6, place the mobile power in a dry place when it is not used, and avoid being contact with metal materials for the occurrence of unwanted circuit.
7, do not place the power supply on the high or low temperature environment, which can lead to the automatic protection function and automatically interrupt the power supply.
8, the mobile power should be stored in the place out of the reach of children to avoid accidents,
9, Do not disassemble the damaged portable external battery charger. If the battery liquid contact your skin, please wash it immediately and contact a doctor.
Although the above description is not very detailed, the basic usage and precautions are provided, and we will find some more detailed mobile power usage and precautions for you latter in order to make everyone use the mobile power in a better and safe way. In addition, I hope you also provide some experience in the use of mobile power.
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Brief Introduction to Features of LED Driver

According to the electricity rules and the characteristics requirements of LED driving power, during the selection and design of LED drive power, an LED driver manufacturer suggested that customers should take into account the following several points:

1. High reliability: especially driver for LED Street lamps, installed in high altitude, with inconvenience of maintenance and large maintenance cost.

2. High efficiency LED is a kind of energy-saving products, which have high requirements on efficiency of the driver. For power supply installation, the structure of LED driver inside the lamp is particularly important. Because the LED luminous efficiency decrease with the increases of LED temperature, LED heat sink is very important. If the power is of high efficiency, its consume power is small, heat inside the lamp will be small, and the temperature rise will be reduced, which is benefit to delaying LED lumens depreciation.

3. High power factor: Power factor is requirement to load from grid. Generally there are no mandatory targets for home appliances of below 70 watts of power. Although single electrical equipment of low power has little impact on the grid, but at night when all lights are turned on, similar load is too concentrated, and it could have a more serious pollution on the grid. For LED drivers of 30 watts to 40 watts, it is said that in the near future there may be certain requirements on power factor.

4. Drive mode: generally there are two types: one is a constant voltage source offering for several constant flow sources. Each constant voltage source individually supplies power to each LED. In this way, the flexible combination, one LED failures will not affect the other LED's work, but the cost will be a little bit higher. Another one is direct constant current power supply with LED in series or in parallel. It has the advantage of low cost, but suffers bad flexibility, and also has to solve the problem that failure of a LED can not affect other running LED. Both of these two forms coexist in some time.

5. Surge protection: LED surge capacity is relatively poor, especially anti-reverse voltage capability. Enhancing this protection is also important. Some LED lights are installed outdoor, such as LED street lights. Due to the using of power grid load and lightning induction, there will be various surge invade from the grid system, and some surge will cause damage to LED. Thus, LED driver should be able to curb the surge intrusion and protect the LED from being damaged.

www.illusion-led.com is a new high-tech LED light China manufacturer engaged in research, manufacturing and marketing of LED light. The main products involve LED wall washer, LED strip, LED module, LED spotlight, LED Street light and LED accessories etc, all of which are widely used for urban lighting decoration, indoor home decoration, hotel decoration, stage lighting, signal lamp, road lighting and other areas.

This article is come from:http://www.illusion-led.com/news/35.htm

The Application Fields of Mobile Power

The application field is enhanced and expanded with technology, and mobile power first appeared in 2001's ces exhibition, with the simple idea and cheap raw materials.

The main application of mini power bank is for emergency, for example, when we use the phone, and use a digital camera to take pictures, when playing PSP game in full swing, PDA is working and so on, all of a sudden power outage makes people feel sad, and the mobile power market arrive as a result of this need in time. With the growing number of portable electronic products, the mobile power has extended to digital products mobile power, from mobile phone charging power, and these products include: laptops, tablet PCs, digital cameras, camcorders, portable DVD, PDA, MP3/MP4, GPS, thermal equipment, healthcare equipment and so on.

In this period, mobile power technology has made progress, from the view of components, the first one is battery: from Single-core electromechanical to NiMH battery and then lithium battery, polymer battery, with a capacity 20000mAh, which is a large-capacity mobile power. Now we commonly use polymer lithium-ion battery, which is widely used in 5V devices.

From the point of view of function, the security and intelligence have obtained development. The current portable external battery charger must have a popular demand: short circuit, overcharge, over discharge, constant current, constant voltage and other protective measures. Intelligent mobile power is the high-performance power management technology allows mobile power can be convenient parameter display and practical application. For example: smart battery indicator is supported by a power management system.

After the development of the mobile power energy supply technologies, it can also support the development of mobile Internet, and currently there are mainly thin-film battery technologies, piezoelectric materials technology, wireless charging technology in this area. The inherent logic wireless charging mobile power market growth is: no matter how excellent the performance is, it cannot be effectively applied when the phone, tablet PC or smart products cannot stay in power , without the power cable.

www.external-battery.net lunched the external battery and Iphone power bank with fashionable designs, reliable quality and competitive price. At present, our product line has been expanded from the battery charger to mobile phone cases and accessories which are suitable for iPhone, iPods, iPad, smart phones, digital tablets and other portable devices. Our own brand "Sunwith" has won a great popularity and market share.

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Classifications of SFP Optical Transceiver

Rate Classification
In accordance with the rate, there are 155M/622M/1.25G/2.125G/4.25G/8G/10G SFP optical transceivers, among which 155M and 1.25G are used widely on the market. 10G SFP technology is becoming mature, with rising trend development of demand.
Wavelength Classification
According to the wavelength, SFP optical transceiver can be divided into 850nm/1310nm/1550nm/1490nm/1530nm/1610nm. The one with 850nm wavelength is SFP multi module, while SFP single module is of transmission distance below 2KM and the wavelength 1310/1550nm. In addition, it enjoys transmission distance more than 2KM. These three wavelengths are sold on relatively cheaper price than the other three.
Nude modules without identity are easy to be confused so that manufacturers will generally distinguish them on the color of the rings, such as: black ring for multimode, of wavelength 850nm; blue is module of wavelength 1310nm; yellow is module of 1550nm wavelength; purple is module of wavelength 1490nm.
Module Classification
Multimode
Almost all of the multimode fiber sizes are 50/125µm or 62.5/125µm, and their bandwidth (fibre information transmission quantity) usually are 200MHz to 2GHz. Through the multimode optical fibers, multimode optical transmitter and receiver can transmit for 5 km. SFP multimode module adopts light emitting diodes or lasers as the light source. Their ring color is black.

Single Module
Dimension of single module optical fiber is 9-10/125µm, and compared to multi module optical fiber, it has unlimited bandwidth and low loss. Single module optical transmitter and receiver are mostly used for long distance transmission, sometimes reaching 150 to 200 km. It adopts LD or LED of a narrow spectral line as light source. Its ring colors may be blue, yellow, or purple.
Differences and Relations
Single module fiber optic is cheap, but single module device cost much more than the same type multi module devices. Single module devices can usually run in both single module optical fiber, and multi module fiber, while multi module devices are restricted to running on the multimode optical fiber.
10G SFP optical module has been through development of 300Pin, XENPAK, X2, XFP, ultimately achieving to transmit 10G signals by the same size with SFP, and this is SFP+. SFP, by its virtue of small size and low cost, meets the high-density requirements of devices to optic modules. Since 2010, it has replaced XFP and become the main stream in 10G market.
www.magnetic-component.com is a China based manufacturer specialized in the R&D and manufacturing of optical and magnetic components. Mentech has been in the field of XDSL transformer and data communication technology development, providing a full range of solutions and products to our customers.