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LED flashlight based on different basic principles are divided into three categories:

1. The most widely used one, is the traditional light bulb flashlight.

Flashlight bulb with a tungsten light resistance ohmic heating, the performance of this key bright led flashlights bulb technology is generally more formal quality tactical flashlights, light bulbs are also applied two methods, both xenon and sufficient iodine sufficient, very well made, lamp life can guarantee 30 hours in 5 or switch thousands of times, but very discrete lamp life, this value is just about the value of the actual use of the lamp is difficult to say which particular those living longer can only say that the products made by regular manufacturers unstable life of the probability is very low, and small factories out is unlikely to guarantee a stable life, and we usually use ordinary flashlight when you can feel good bulb high brightness, long life, low-quality bulbs rather poor, Gesanchawu to burned.Luminous efficiency of light bulbs about 10 to 15 lm / W (provided that the quality of passing lamp, poor quality, less efficient light bulbs), most of the energy is wasted as heat. Select bulbs tactical flashlight, the general requirements of over 60 lumens brightness flashlight, lamp power of more than 6W.

2. Limelight recently a very fresh, is to use high-power 200 led flashlight emitting diode (LED) instead of a flashlight bulb.

LED's greatest feature is the long life at rated power range, Thousands of hours of life can almost do not have to consider replacing the light bulb issue, perhaps with a rotten body flashlight, LED also not bad, really bad!

LED luminous efficiency higher than flashlight bulbs, up to 20 lumens / watt. Moreover, LED LED determines the structure of a natural earthquake, do not have to be used in firearms on the algorithm of fault as the light bulb filament, like fear. White LED light-emitting principle I do not know, anyway, as if issued by a certain wavelength of the semiconductor power monochromatic light to stimulate phosphor to issue white colors mixed together.

LED and resistor, it does not obey the U / I of the linear voltage / current relationship, small changes of voltage and current have a relatively big change, a corresponding change in luminous intensity, and LED current is too large, then severe fever, sharp drop in life, so most of the LED flashlight has a driver circuit to provide constant current output, to provide constant voltage output of a few to ensure the stability of LED light, LED flashlight, but some of the greatest possible to simplify the structure, improve reliability, directly in series with a resistor to limit current, the effect is tolerable, but also can provide the stability of longer light time.

High luminous efficiency, light, and power, long life LED development, design, production more difficult, only LUMILEDS COMPANY the luxeon star LED used widely, so few good LED flashlight China appears.

Common domestic products, are more common light-emitting low-power LED flashlight, light color, severe bluish, power is very small, very poor condenser performance, which can only be the usual toys, with the gap between tactical flashlight far!

But there are also direct use of home-made luxeon star LED flashlight, flashlight forum is very hot, "Shan Wa" (3 watts) LED flashlight is one such, but the work is relatively poor, with a length so short of my standards, I think it is not as tactical flashlights.

3. The most cutting-edge technology is hid flashlight (High Intensity Discharge, as if high-pressure gas discharge light technology) a flashlight.

At present, only a few products come out, basically the search with the relatively large volume of lamps, no small flashlight, and the price is super expensive. In addition to the common home of fluorescent tubes, HID is most common in the camera's flash, a small tube filled with gas, using high-voltage capacitor accumulates the gas discharge breakdown moment, given the dazzling white light, like lightning, and HID flashlight is a special Dianlu is continuing to provide a stable high voltage, so that gas continued to send a strong light. This flashlight is characterized by high luminescence efficiency can reach 50 lm / W or more, and higher color temperature, color rendering Ye Hao, which is commonly used in the camera as an aid to HID lighting are also able to verify it.

Wolf-Eyes domestic brands have been 40W3400 lumens of HID products available (is simply a small sun ah!), 10W500 lumen but also out of the lab, and abroad come some HID flashlight, but ... ... HID price ... ... Wolf 40W-Eyes is that ............ 1700 dollars! HID flashlight now I do not know more details and advantages and disadvantages, so I in 500 million when winning back maybe I would buy a specific test.

Digital Hanging Scale type:

Form from the work can be divided into hanging hook, driving style, the axis pedestal, embedded four; from reading straight form the body can be divided into explicit scale (ie, body sensors and scale integration), cable box operation Display (crane operator control), large screen display and wireless instrument display (and computer networking) four; form from the sensors can be divided into resistance strain, pressure magnetic, piezoelectric and capacitive four; resistance strain most commonly used. From the use of the environment is divided into normal temperature type, high temperature, low temperature, magnetic insulation type and explosion proof; from the data processing on the stability can be divided into static type, quasi-dynamic model and dynamic model of three; currently used for static and quasi-dynamic model, dynamic model have begun to enter the market, such as e-like animal weighing scales.

Electronic crane scale of the main advantages and disadvantages

⑴ Reduce operating links, speed up the measurement of speed, saving manpower, material and time, so that the goods in the lifting, loading and unloading complete measurement.

⑵ Does not account for space, easy to use and flexible.

⑶ Allows continuous measurement of the work, and play a role in monitoring and control. As in the nonferrous metals industry of the electrolysis plant, metallurgy casting occasion, a timely monitoring of Lv (steel)-water in Lv (steel) weight of the water reaches the maximum use of equipment, saving energy Mudi.

⑷ Measurement data to achieve remote, centralized monitoring, people leave the poor and dangerous working environment.

⑸ Easy and crane control systems combine to reduce the job setting. Our newly developed multi-purpose crane for electrolytic aluminum plant unit electronic crane scale , crane remote control with the organic combination.

⑹ Easy metrological verification, error correction is simple.

⑺ Multi-function, high precision, strong anti-cheating, low maintenance costs.

⑻ Hook hanging crane Luggage scales crane lifting of the height of the goods, driving style, the axis pedestal cranes needed transformation, maintenance of crane operations, the embedded part in the installation of a crane weighing links, does not affect play lift height, does not affect crane operations, is the development of the industry in one direction.

Electronic crane Hanging scale works and the main parameters

1. How it works: When the load acting on the sensor through the hook to make the sensor small changes occurred elastomer, so that the body attached to the elastic resistance of the resistance strain gauge changes, changing the balance of the bridge. The output voltage changes, changes in the voltage signal through the high-speed precision A / D converter into digital signals, the digital signal by the collector, the wireless transmitter (or cable) to the secondary instrument inside. Secondary instrument will be calibrated data signal processing, the weight values ??to the corresponding screen display, a printer can print, if necessary, can be transmitted to the computer management system.

2. The main technical parameters

⑴ Executive Standard: GB11883-89 electronic crane standards, with n said sub-degree (precision), e said division value (sense of volume), tolerance by e said.

⑵ Accuracy:

A. 1000 international standard OIML Ⅲ class

B. Standard of domestic A-1000

C. Class B standard of 400 domestic

This is a start, we want to continuously introduce several non-famous brands (not even the brand) manufacturers of the products, controller charger is introduced, these small things Jeremy find quite interesting. As a villagers, in addition to those well-known brands, we occasionally come to care about the disadvantaged groups ah.

First introduced this product, because the booth location is very partial, if not see the Wii wireless charging posters, probably will not notice it. Jeremy had seen before Wireless wii controller charger ( click here ) concept, the concept for this very curious, decided to go immediately to a dark corner.

Mastery of this technology, known as the rich and launch the company's wireless charger products, the concept is the use of RFID to charge. It simply say, like we use the money card, in fact, also be useful to power, the power is not money card body, but in the gate reader, as follows to read the card corresponding to the time card machines, which will be due to induction generate action (I know that is the case, a master, then feel free to correct me trouble.) Induction process, the current way of actually passing through the sensor, and this wireless charger, it is also the use of this principle.

The Wii wireless charger, sells a set of charger, and battery back cover, the non-contact chip on the back cover in the time to charge directly into the charger base on it, so that the power conversion rate about 50%, charge 4.5 hours to charge to 80%, about 700 more than NT shipping prices to the market it probably more than 1,000 yuan.

Jeremy said the moment to doubt that the wireless charger, in fact, still have to plug charger Yeah, who told me to buy a battery charger What is the difference? The industry's answer is this. Wii has a lot of people hand protection cover, if you put the words of rechargeable batteries (usually rechargeable batteries can be), now charged would not remove the protective cover will save trouble a lot. And the point is, the host has done this charging flat disc, the future of the 3C products as long as you have this feature to a charge the host can, everything can be charged and no longer had a product with a battery charger.

The concept sounds like a lot of utility, such as Jeremy was time to go abroad to bring the charger about 3 to 5 bar, if my cameras, cell phones have such a chip, with a charging stand out enough to then charging into the above products can be. And the industry has developed an interesting extension of the application, that is, warm feet slippers, there is also charged under the blanket, slippers, which has a heating pad, put shoes on the carpet slippers on the charge will remain the temperature of 40 degrees in winter cold The person can use this stuff the.

Basically, this gadget with wii battery packs I think quite interesting, but really want to promote them, probably have a giant's 3C products add to the mix right to use this feature, or manufacturers must develop corresponding products (such as Wii), we The new application, to temporarily maintain the attention it!

Jeremy is attracted by this poster came. This is the wireless charging base, a safety switch, full of bright green light will. Manufactured products to a long way, vendors will initially locked in Japan, the United States, Europe, the main market . Wii to be able to handle the wireless charging, the battery back in this tricky to cover, the bottom has a RFID chip and the coil. Manufacturers also make a set of slippers out of the sale should be selling high latitudes where it (the blanket should also be used to charge other things filling it)

Digital gram scale weighing the ease of use have been times in the various industries and has been widely used. It not only has high-precision measurement, but also achieved multi-functional, multi-purpose. Current domestic production of digital scales manufacturers has grown to hundreds, mainly in the non-automatic weighing instruments and automatic weighing instruments based.

The introduction of digital weighing technology from the past into the self-development and design of the period, especially for non-automatic weighing instrument's weighing display controller of leaps and bounds. Automatic weighing and weighing hair divided into two categories of non-automatic weighing instruments, commonly used on the market non-automatic weighing instruments. It is mainly used for trade settlement, is also the most contact with the masses of digital weighing, for example, one commonly used price computing scale, digital scales and digital truck scale. automatic weighing instruments are generally more common in industrial and mining enterprises in the batching scales, quantitative packing scale and so on. digital weighing scales mainly by display controller, load cell, and electrical control components, and the rational use of load cell weighing display controller is to determine the quality of plant products the key, which determines the scale of accuracy, reliability, and failure factors and other parameters. How to buy digital scales and weighing a reasonable display controller that the user most concerned about.

First, the digital Scales of purchase

Weighing on the market at present an accuracy grade (III)-level scale, showing the general sub-degree level of 3000 points, the minimum scale value is based on weighing the size ranging from 1g to 50 kg, (for example, the digital Price Computing Scale 15 kg indexing indexing the minimum value of 5g). At the time of purchase: If the price computing scale with 15 kg case.

1.In the empty state and the largest weighing scale state figures show steady (not blinking).

2. With the largest weighing one-third of the weight (or close to the value of the property) placed in the scale table 1 / 4 (to be shared equally weighing table 4) test points within the figures are the same.

3. If conditions take the largest weighing standard weights placed on the scales on the table to test their accuracy.

4. Taken close to the maximum standard Gram weighing Scales weighing (or close to the value of the weight) 3 times repeated loading, testing various figures are the same.

5. According to the function keys, test each function key is good contact, whether the purpose.

Second, the weighing of the Optional display controller

1. The instrument of its functions to sub-types: a single-function, multi-functional and special instruments. Characteristics of the sensor output signal can be connected with the sensor analog output signal can also be connected with digital output signal of the sensor, there are still pricing function, has a multi-purpose table. The series of single-function measuring instrument has A1 --- type, A2 --- counting type and so on.

2. Multi instrument and multi-functional advantages and disadvantages of single-function instrument instrument: its adaptability, can be widely used in various non-automatic with digital scales and automatic digital weighing. But the software development cycle length and the high cost of hardware support, so its manufacturing cost is higher. Single-function instruments: the software development cycle is short, the hardware is also less, so it's relatively low manufacturing costs. Special instrument. manufacturing costs between the single function and multifunction. In terms of the use of failure rate, compared to higher function.

3. Select the instrument consider the issue

a. Select the type of instrument should be the actual needs, rather than the select function better.

b. Production of measuring instruments to obtain permits selection of products.

c. The technical indicators are in line with national standards for weighing display controller.

d. key to assessing their compliance with security requirements.

4. International and domestic weighing display controller dynamic domestic development and production of the instrument is currently a scale with only a general statement, the foreign production of the instrument has been able to use a table with multiple scales simultaneously. Its software features and hardware support can be shared, so that relatively lower manufacturing costs, the use of management costs are also reduced.

5. Note the development of new instrumentation, we should pay attention to the reliability of safety performance, its technical requirements and measurement of the number should be consistent with international recommendations OIML76 the main provisions of the document request, especially in terms of interference with particular attention. This is a general purchase of checks, but can reflect the performance of display technology and the functional requirements of the norm.

6. Maintenance and repair is the proper use and timely maintenance to extend the service life of critical equipment, measuring equipment used to make sure the required environment, the innocent in order to avoid damage to equipment must be familiar with the instruction manual before operating and technical instructions in the confirmation only after use.