Laptop News

The 7.8-pound HP Pavilion dv9000 is a desktop replacement that’s serious about multimedia. Its matte- or glossy-finished, 17-inch wide-screen display comes with a native resolution of either WXGA+ (1,440×900) or WSXGA+ (1,680×1,050), and the system features LED-backlit, also a 8cell HP Pavilion DV9000 battery ,touch-sensitive multimedia controls; two headphone jacks (one of which supports S/PDIF out); and HP’s QuickPlay 2.1 software for accessing media without booting into Windows.

The Pavilion DV9000 battery specs :

Battery Type: Li-ion 8Cell

Volt: 14.4 Volt

Weight : 1.49 lbs

Dimensions : 11.26 x 8.90 x 1.85″

Maximum run time : MobileMark 2002 (wireless off): 2 hours, 25 minutes

HP Pavilion dv9000 battery overview :

Compatibility with HP Pavilion dv9000 series notebook PCs

Rely on HP; this battery has been specially designed and tested to meet your HP notebook’s power needs

The HP Pavilion dv9000 series laptop battery features: long battery life and maximum power, quick-charging!

Customer Review

“I bought a second laptop battery as I am often at client sites and need the time 2 batteries will give me. The original battery (18 mos old) is starting to show some signs of reduced life. The backup (1 year old) still gives me 2-3 hours. I make it a point to unplug my machine and cycle the batteries a couple of time a week. There is no faster way to kill a battery than to leave it plugged “for 99.5% of the time” as some of the reviewers admit doing. I learned that lesson on previous machines. There’s nothing wrong with either of Pavilion DV2000 batteries pavilion DV6000 battery I have – I am very satisfied. I think the problem with the other reviews is user error. BTW – you should expect to replace the battery every 18 months – shorter if you abuse it by leaving it plugged in. I’ve been using laptops exclusively since 1995 and I have never had a battery that didn’t completely die within 2 years. That’s just how they work. Cycle the battery all the way to 0 at least once a week. That will give you the maximum life from it. These are no worse than any other battery.”

“I have had my dv9000 laptop for 2 years, this past December. So that is roughly 26 months now and I leave my laptop battery in my computer ALL the time and it still runs. It all depends on what power setting I am using. On high performance, the battery will still last about 45 min to an hour and on power saver it will last roughly 2-2 1/2 hours. I try to take care of my computer, but it has over heated on numerous occasions (all my fault for not using a cooling pad) and the battery is still going. (Wish HP had better design to cool the laptops) To bad the replacement batteries are so expensive.”

“My business partner bought the Pavillion DV9000 battery as more useful office computers for the company in 2004. The HP laptops have been wonderful. The first battery that came with the laptop lasted about two years. The second about 18 months. The third barely made it through a year. I have had to park the laptop because it is eating up our media budget. The other laptop does not use batteries as quickly, but it is not used as often. No, the laptop does not stay plugged in all the time. It stays in its case, battery in a separate compartment. I was told that is the best way to store the laptop. So today, I am finally ordering battery number 4. At these battery replacement prices, we may have to go back to another brand, which I liked much less. What a shame.”

“Both the original battery and a replacement spare battery only lasted about 1 year before reduced run time made them only useful for moving from one AC outlet to another. I’m ordering another with hopes that the battery has been improved. I think my mistake has been to leave the battery in the computer and on AC most of the time. HP should have software on the computer to prevent destruction of the battery due to overcharging.”

Hopes that help you. Via laptop battery blog

The main types of power management chips and application of Laptop battery

If the design of the circuit require a high power supply noise and ripple rejection, require the occupier PCB board space is small (such as mobile phones and other handheld electronic products), the circuit does not allow the use of the power inductors (such as mobile phones), power supply needs to have instantaneous calibration and output state self-test feature that requires a voltage regulator voltage drop and its own low power consumption, low cost, and program a simple line, then the linear power supply is the most appropriate choice. This power includes the following technologies nikon d3000 vertical-grip: precision voltage reference, high performance, low-noise op amp, low dropout Regulator, low quiescent current. In the low power supply, the negative op amp power supply, LCD / LED driver and so on, often use chips based on capacitive switching power supply, which is commonly referred to as charge pump (ChargePump).

Chip charge pump works based on many products, such as the AAT3113. This is a general low-noise, constant frequency charge pump DC / DC converters consisting of white LED driver chips. AAT3113 uses scores of times (1.5 ×) conversion to increase efficiency. The device driver 4-way parallel mode LED. Input voltage range of 2.7V ~ 5.5V, output for each provide nikon d5000 vertical-grip about 20mA of current. The device also features a thermal management system features in order to protect any shorted output pins arising. The embedded soft-start circuitry prevents current overshoot at startup. AAT3113 using simple serial control interface to the chip enable, shutdown and 32 pairs of the number of scale brightness control.

The inductor-based DC / DC chip, the most extensive range of applications, applications, including handheld computers, cameras, spare batteries, portable instruments, micro-phones, motor speed control, display bias and color adjustments, etc.. The main technologies include: BOOST structure of current-mode loopnikon mb-d10 vertical-grip stability analysis, BUCK structure of voltage-mode loop stability analysis, BUCK structure of current-mode loop stability analysis, over-current, over temperature, over-voltage and soft-start protection, synchronous rectifying technical analysis, technical analysis of the reference voltage.

In addition to the basic power conversion chip, power management chip also includes the rational use of power for the purpose of power control electronic devices. NiH battery fast charging, such as smart chips, lithium-ion battery charge and discharge management chip, lithium-ion battery over-voltage, over current, over temperature, short circuit protection chip; the line between the power supply and backup battery management chip switch, USB power supply management chip fujitsu lifebook b6110d battery; charge pump, multi-channel LDO power supply, power-up sequence control, a variety of protection, battery charge and discharge the complex power management chips. At present, many products are moving in that direction, because the application of such products more widely, especially in consumer electronics.

Such as portable DVD, mobile phones, digital cameras and so on, almost with a -2 blocks of power management chip will be able to provide sophisticated multi-channel power supply fujitus fpcbp112, fujitus fpcbp112ap, so that the performance of the system to play to the best.

Analog chip digital power supply to make up deficiency of electronic devices with more functions, higher performance, its structure, technology, systems more complex, traditional analog technologies to meet the overall system power management IC power management requirements more difficult it is, the price is also more expensive. High-performance full-digital control IC is the field of intelligent power management trends, there is a flexible, rapid response, highly fujitsu lifebook e8310 battery integrated and highly controllable great advantage. Only a few established the current global semiconductor manufacturers, as well as the first new IC vendor into this new arena.

TI, Microchip, ZilkerLabs, iWatt, SiliconLabs and other companies put out their own digital power products. Digital controller core mainly consists of three specific modules: anti-aliasing (anti-aliasing) filters, ADC (ADC) and digital pulse width modulator (DPWM). In order to achieve the same analog control framework for performance indicators must be equipped with high-resolution, high-speed and linear ADC, as well as high-resolution fujitsu lifeBook s2210 Battery, high-speed PWM circuit design.

ADC resolution, must be able to meet the error is less than the output voltage to allow changes in the scope, the smaller the required output voltage ripple, then the higher requirements on the ADC resolution. At the same time, due to anti-aliasing filter, as well as pipeline-type or SAR ADC will introduce the loop delay, so we urgently need a high sampling rate of the ADC. Analog controller pulse width may be generated by the inherent limitations fujitsu lifeBook s6310 Battery, while the DPWM can generate discrete and limited set of PWM width.

The output from the steady state point of view, can only be a set of discrete output voltage. As the DPWM is part of the feedback loop, so the resolution of DPWM must be high enough in order to make the output does not display the value of a well-known limits of weeks. Do not show any minimum required limits of weeks the median value is determined by topology, the output voltage and the ADC resolution. At the same time, the system loop stability by the PI or PID controller to adjust. Compared with the structure of fujitsu lifeBook s6311 Battery the current analog control, digital control architecture, the cost will increase significantly.

Power Management IC

Power management chip a very wide range of nikon d300 vertical-grip applications, the development of power management chips for improving the overall performance of great significance, the choice of the power management chip and system requirements directly related to the development of digital power management chips need to cross the cost of difficulties. Today’s world, people’s lives is also inseparable from the moment of electronic equipment. Power Management IC in the electronic equipment system in the shoulder of the energy transformation, distribution, testing, and other power management functions. Power Management IC for electronic systems, is indispensable, and its performance, the performance of the pros and cons of the machine has a direct impact. Power management to improve the overall performance of all electronic devices have a power supply, but the different systems of the power requirements are different nikon d700 vertical-grip. In order to play the best performance of electronic systems, need to select the most appropriate power management. First, the electronic equipment is the core of semiconductor chips. In order to improve the circuit density, the chip feature size has always been trend towards reduced from the initial tens of micrometers to the current 0.5-micron, 0.35 micron, 0.25 micron, 0.18 micron and even 90 nm.

Since the same voltage, electric field strength decreases linearly with the distance increased, if the supply voltage or the original 5V, produced by the breakdown field strength sufficient to chip fujitsu lifebook b6000 battery. Therefore, the current chip voltage has changed from the previous 5V down to 3.3V, 2.5V, 1.8V, or even less. In this way, electronic systems of the power supply voltage requirements of the change, that is, require a different step-down power. In order to maintain high efficiency step-down at the same time, the general will use step-down switching power supply. At the same time, many electronic systems also need more than the power supply voltage, such as in battery-powered devices, driving liquid crystal display backlight power, ordinary white LED drivers, etc., need to boost the power of the system, which need to use the step-up switching power supply. In addition, modern electronic systems are high-speed, high gain, high reliability, direction, power supply are all small electronic devices interfere with the performance of an impact, which requires noise, ripple, etc. have an advantage of power, the need for the system Power to regulation, filtering, processing, which need to use a linear power fujitsu lifebook b6000d battery supply. On

Out of different power management mode, you can power through the corresponding chip, combined with minimal external components can be realized. Can be seen that the development of power management chip is to improve the overall performance of the essential means. Chip Select issue-specific power management because the scope of relatively broad, including both individual energy conversion (mainly DC to DC, that DC / DC), a separate power distribution and testing, including power conversion and power management system combining . Accordingly, the classification of power management chips also include these aspects, such as the linear power supply chips, voltage reference chip, switching power supply chips fujitsu lifebook b6110 battery, LCD driver chips, LED driver chips, voltage detection chip, battery charge management chips.

The status quo of international standards for lithium-ion Laptop battery

Currently has a larger influence on the international standard is IEC (International Electrotechnical Commission) standard, UL (Underwriters Laboratory) standards and the IEEE (International Electrical and Electronics Engineers) standard. Other foreign standards, such as the EU standard, Japan’s national standards, and many more for the introduction of IEC standards. And lithium-ion nikon d90 vertical-grip safety-related major existing international standards as follows:

1.IEC62133: 2002 “containing alkaline or other non-acid batteries and battery electrolytes – Portable sealed batteries and battery safety requirements”; 2.IEC62281: 2004 “in transit lithium primary cells and batteries and lithium batteries and battery of security “; 3.UL1642: 2006″ lithium nikon d200 vertical-grip “; 4.IEEE1625: 2004″ standard laptop computer batteries “; 5.IEEE1725: 2006″ for cellular phone battery standard. ”

In addition, IEEE1825 digital cameras and camcorders with battery standards are under development. The standard IEC62133 for the various uses of portable alkaline battery, including lithium-ion battery; IEC62281 applies to lithium primary batteries and lithium-ion battery transportation; UL1642 apply to all containing lithium batteries, including lithium primary batteries and lithium-ion fujitsu lifebook c2340 battery ; IEEE standards were applied to notebook computers, mobile phones and digital cameras and video cameras use lithium-ion batteries.

Jinzhou PV industrial park infrastructure has been in full swing

The new year, Jinzhou Xihai Industrial Zone, well-built specialized industrial park — photovoltaic industrial park, infrastructure has been in full swing for fujitsu fpcbp79.

In recent years, Jinzhou Development Zone, change the past “big investment” line of thinking to launch a new investment professional park initiatives, and in the west industrial zone planning and construction of photovoltaic industrial park. Merchants Park, the process of professionalization, the development zone projects first screening, in a professional park Baizhi affect the strong, has good prospects for development projects. Photovoltaic Industrial Park planning area is 1,500 acres, all assigned to the project put into production, annual sales income of 5 billion yuan. Bai Zhi project has an annual output of 100 megawatts of monocrystalline silicon solar cells, 40 tons of polysilicon ingots and wafers 2 million projects. At present, the annual output of 100 megawatts of monocrystalline silicon solar fujitsu fpcbp83 , fujitsu fpcbp83ap cell of the steel plant infrastructure projects has been completed, will be officially put into operation in April of this year.