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The working principle of the inverter

 投稿者:marxon  投稿日:2012年11月21日(水)16時48分31秒 softbank126015002099.bbtec.net
      The inverter is a DC to AC transformer, it actually is a voltage inverter with converter process.

    The converter is an AC voltage of the grid into a stable 12V DC output, while the inverter is Adapter 12V DC output voltage into a high frequency high-voltage alternating current; two parts of the same are used more than the pulse width modulation (PWM) techniques. Its core is a PWM integrated controller Adapter with UC3842 inverter TL5001 chip. TL5001 work voltage range 3.6 ~ 40V, its interior has an error amplifier, a regulator and oscillator the deadband control PWM generator, low-voltage protection circuit and short circuit protection circuit.
Input interface portion: an input section has three signal, 12V DC input VIN, the work enable voltage ENB and Panel current control signal DIM. VIN Adapter the ENB voltage provided by the MCU board, a value of 0 or 3V inverter does not work, and ENB = 3V, the inverter is in normal working condition when ENB = 0; while DIM voltage provided by the motherboard, which ranges between 0 ~ 5V, the different values ??of DIM feedback to the load current supplied to the feedback terminal, the inverter of the PWM controller will also be different, the DIM smaller the value, the inverter output current greater.
Voltage start-up circuit: ENB is high, the output high voltage to the backlight lamp lit Panel.
PWM controller: the following functions: internal reference voltage, error amplifier, oscillator and PWM, overvoltage protection, undervoltage protection, short circuit protection, output transistor.
DC conversion: voltage conversion circuit by the MOS switch and the energy storage inductor, and the input pulse is driven after a push-pull amplifier amplifies the MOS tube to make a switching operation, so that the DC voltage to charge and discharge the inductor, so that the other end of the inductor can be obtained AC voltage.
LC oscillator and output circuit: to ensure that the lamp needs to start 1600V voltage, the Lamp Startup voltage down to 800V.
The output voltage feedback: feedback sampling voltage, and play a role in stabilizing I inverter voltage output when the work load.



Battery charger

 投稿者:marxon  投稿日:2012年11月 2日(金)17時29分10秒 ZH071239.ppp.dion.ne.jp
  Battery automatic charging apparatus is suitable for wide application on the market at present of the lead acid free maintenance storage battery or storage battery charging and

design, the small volume, light weight, convenient to move. The main components of the military level IC, and other, the use of the technical grade, power inverter tube for quick

IGBT, plus before they strict testing, aging, so the reliability and stability fully guarantee. Widely used in railway, civil aviation, communication, electric power and the use

of free maintenance lead-acid battery enterprise, and by the user's praise.

The main functions and features:
? input AC voltage range wide, output DC stability performance is good.
? output current can be adjusted continuously.
? use flexible: single charge, but also many sets without the weaver are flow processing.
? with input and output flow, overvoltage, undervoltage protection, and the overheating protection function.
? cooling using forced air cooling, intelligent temperature control.
? according to different specifications of the battery and battery can be adjusted flexibly output voltage and charging current.
? charging process for constant current, constant voltage purling floating blunt three stage automatically, won't because of over-voltage or over-current and damage battery.
? voltage, current value digital display, accurate and intuitive.
? the operation is simple, easy to use.



The primary segment of the inverter

 投稿者:marxon  投稿日:2012年10月17日(水)16時03分5秒
     Mainly divided into two categories, one is a sine wave inverter, and the other is a square wave inverter. The sine wave inverter output AC sine wave is our daily use of the grid is the same or even better, because it does not exist in the grid electromagnetic pollution. The square wave inverter is the output of the poor quality of the square wave alternating current, its positive maximum to a negative generated almost at the same time to the maximum value, so that, on the load and the inverter itself cause severe destabilizing effects. In the same time, its load capacity, only 40-60% of the rated load, not with inductive loads. Carried the load is too large, the capacitive current third harmonic components contained in the square wave current will flow into the load increases, severe damage to the load power supply filter capacitor. Considering the above disadvantages, in recent years, there have been quasi-sine wave (or modified sine and modified sine wave analog sine wave, etc.) inverter, the output waveform from the positive maximum to a negative to the maximum value between a time interval, use of the effect of improvements, but the quasi-sinusoidal waveform is still composed of polylines belong to the scope of the square wave, bad continuity. To sum up, the AC sine wave inverters provide quality, they can bring any kind of load, but the technical requirements and costs are high. Quasi-sine wave inverter can meet most of the demand for electricity, high efficiency, low noise, moderate prices, and thus become a mainstream product in the market. The square wave inverter making simple multivibrator, its technology belongs to the levels of the 1950s, will gradually withdraw from the market.

    Inverter according to different generation sources, divided into coal power inverter, solar inverter, wind inverter, nuclear power inverter. Depending on the application, it is divided into the independent control of the inverter, grid inverter. Domestic market, the efficiency of the inverter. Inverter at work itself also consumes part of the electricity, and therefore, its input power is greater than its output power. The inverter efficiency that is the ratio of the inverter output power and input power. Such as an inverter input 100-watt DC output 90-watt AC, then, its efficiency is 90%. Solar inverters in the world, Europe and the United States and the efficiency of high European standard is 97.2%, but the price is more expensive, the other inverter efficiency of 90%, but the price is much cheaper than imports. In addition to the power waveform, select the inverter efficiency is also very important, the higher the efficiency of the inverter body wasted energy for electrical energy is more, especially when you use small power system The importance of this is more obvious.



What's Unique About AGM Batteries

 投稿者:marxon  投稿日:2012年 8月14日(火)18時04分54秒
  There is a chance if you own a motorcycle or an expensive vehicle, you likely have an AGM battery helping run it. If you have not heard of that prior to this, don't fret. Most other vehicle owners who have not explicitly gone to mechanics courses have not also. Understanding the particular type of battery your vehicle runs off of and precisely how it keeps your automobile going isn't a bad thing though.

Firstly, we've got to start with the higher class of batteries of which AGM batteries are a part. These are a specific type of VRLA battery. Also recognized as a valve-regulated lead-acid battery, the VRLA battery is an abbreviation for a specific type of minimal maintenance lead-acid rechargeable batteries. These do not need water added to the cells on a regular basis due to the way they were constructed. These specific types of batteries have been commercially available now for approximately 100 years, and the technology has been updated throughout the years.

AGM batteries are a particular kind of VRLA battery. It means absorbed glass mat and these were made in the late 1980s in Northern California. In these specific types of VLRA batteries, capillary action binds the electrolyte to glass mat separator.

AGM batteries possess some distinct benefits over conventional flooded lead-acid cells. For one, purer lead is allowed into the plates, because the weight of each plate doesn't need to support its own mass. There is additionally no possible way to dump an AGM battery since the plates are not fixed in place by a flood of lead-acid cells. These also hold roughly one and a half times more power than the conventional flooded battery due to the purer lead. It also does not call for any additional water to run as a result it is simpler to care for.

There's also a greater level of cost pertaining to the production of AGM batteries. As a consequence, these types of batteries are usually only found in motorbikes or higher class of vehicles such as the BMW. These batteries also reduce the car's weight, which is the reason they end up being utilized time and time again on premium sports powered vehicles and the like.for more,on my website




 投稿者:teacup.運営  投稿日:2012年 8月14日(火)17時51分20秒