Electronicsunit Blog

007.30.09 Micro-Small RF Connectors

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New SMPM microminiature RF connectors offer the same performance and convenience as the proven SMP connectors, but in a form factor that is 30% smaller. With a low VSWR through 40 GHz, SMPM connectors offer a versatile solution for high-density packaging, allowing center-to-center spacing of 0.135 inch

The connectors are designed for rugged environments, where harsh mechanical shock and vibrations are found. Their small size also makes them a favorite for ground and airborne radar, antenna systems, and other communications systems where dense packaging means compact size matters.

RF Connectors have microminiature SMPM form factor.

RF Connectors have microminiature SMPM form factor.

Available with smooth bore or fully detented interface to provide insertion forces of 2.5 or 4.5 lb, 40 GHz SMPM microminiature RF connectors allow center-to-center spacing of 0.135 in. Available in cable-mount jacks, board-mount receptacles, and with accessories such as adapters and shrouds with range of configurations, SMPM connectors are the space-saving solution to next-generation systems. They work with .047-inch semirigid cable and T-flex 405 cable. The connectors are designed to accommodate radial and axial misalignments of 0.010 inch to allow easy mating.

207.29.09 New Medical Power Adapter

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News from ThomasNet: Sunnyvale, California – Magic Power Technology Inc. introduces the MPM-X12Y, a single output 120 watts power adapter designed specifically for medical equipments. MPM-X12Y comes with active PFC and is CEC/Green Power and Energy Star Group V compliant. The BF compliant power adapter has minimal current leakage and is designed for use in devices coming in contact with patients.

Employing 4-pin DIN connector at dc output, 12 W MPM-X12Y is mechanically designed with wall mount capability and strain relief kit to prevent accidental ac power cord decoupling. It comes with active PFC, universal ac input for worldwide use, and standard protection mechanisms in cases of over voltage and short circuit. EN 60601-1, UL 60601-1, and CCC Medical Safety Standard approved, device is also available in +12-13.8, +19-20, +24, and +36 V output voltage models.

Medical Power Adapter is Energy Star Group V compliant.

Medical Power Adapter is Energy Star Group V compliant.

About Magic Power Technology Inc.

Magic Power Technology Inc. (Corporate office located in Sunnyvale, CA.) designs, develops, manufactures and distributes power supplies.  They market their products primarily to industrial control vectors, telecommunications, medical equipment manufacturers, and embedded system markets.

107.29.09 Nissan Has Gone Ahead In The World

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“Nissan will be a leader in zero-emission vehicles,” Chief Operating Officer Toshiyuki Shiga said ahead of a test-drive event at the automaker’s facility in this Tokyo suburb. “EV is the answer.”

YOKOSUKA, Japan: Nissan Motor Co. showed off its super-quiet, zero-emission electric car on Monday – a key green offering for Japan’s No. 3 automaker, which has fallen behind in hybrid technology.

Nissan showed the prototype in a Tiida compact that is already on sale.

The platform will be incorporated into a new vehicle body that will be unveiled at the beginning of August. It consists of a highly rigid body (designed to reduce vibrations and increase the car’s durability), an electric motor, and a lithium-ion battery pack built into the floor of the car so that it doesn’t eat into cargo space. The production version of the vehicle will go on sale next year, the company says, and get 160 kilometers–100 miles–on a charge.

Latest Nissan Electrical Car

Latest Nissan Electrical Car

Nissan said its intention is to create an all-electric vehicle that can be driven “24/7,” and to support that has developed an EV-IT system that connects the vehicle, through an on-board transmitter, to a global data center. Drivers will be able to check the state of charge of their vehicles online and by cell phone, and the car’s navigation center will calculate driving radius and capability of reaching a selected destination based on the current state of charge. It can also tell the driver where the closest charging stations are.

Another interesting function is a remote-controlled timer that lets the air-conditioning be turned on to “precool” the vehicle while it’s plugged in during charging to save battery use. The remote function also lets the driver tell battery charging functions to start and stop at specific times.

More details are expected at the August 2 event.

 

 

107.28.09 Battery—Life Necessities

to Battery, Storage Battery & Charger — Tags: , ,  
The world is becoming more and more colorful since the advent of battery. Look at our daily life, can we live without battery? Of course not!
charger01

charger01

Currently, the electronics require a large amount of energy to operate. And to meet this voracious consumption, nothing is more practical than dry batteries and batteries charger. When the energy ends, you simply take your rechargeable dry battery and put it in the charger and that’s it: it is ready to be used again. In addition, rechargeable dry batteries last more than common dry batteries -from 2 to 4 times. And they have been developed to be used in equipments such as digital cameras, some GPSs etc..

charger02

charger02

And the industry of battery manufacturer has bright prospects for the future. It is reported that India’s leading dry cell battery manufacturer Eveready Industries is eyeing a growth of 10 percent in 2009-10.

Referred to dry cell batteries, they are common things in our daily lives. I would like to remind everyone to pay attention to the classification of used batteries. I think we’d better choose to use rechargeable batteries. It is economical and environmentally friendly.

charger03

charger03

What are the kinds of charger?

There are various types and capabilities in the market. The charger is connected to the type of batteries for which it was designed. Most of the dry batteries are rechargeable NiMH (nickel-metal hydride). Until recently, it was also common in NiCd batteries (nickel-cadmium). The NiMH offers a much larger capacity, and it can be found in both small size (AA) and (AAA).

How do I choose a charger?

The correct choice of the charger is very important to the health of rechargeable batteries. It must be compatible with the carrying capacity of the battery. Give preference to the acquisition of the charger / battery together, as a charger with different time load cell can damage it.

007.28.09 A Generalist Called PLC

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In our electrical engineering and automation field, there is a good tool for us called PLC. It is more convenient for us to develop a control system with it. In fact, it can play a role in all fields.

A PLC (Programmable Logic Controller) is a device that was invented to replace the necessary sequential relay circuits for machine control. The PLC works by looking at its inputs and depending upon their state, turning on/off its outputs. The user enters a program, usually via software, that gives the desired results.

A PLC consists of following main parts:

Main Parts Of A PLC

Main Parts Of A PLC

What is a PLC input/output?

Inputs/Outputs

Inputs/Outputs

PLCs are used in many “real world” applications. If there is industry present, chances are

PLC Control Panel

PLC Control Panel

good that there is a plc present. If you are involved in machining, packaging, material handling, automated assembly or countless other industries you are probably already using them. If you are not, you are wasting money and time. Almost any application that needs some type of electrical control has a need for a plc.

For example, let’s assume that when a switch turns on we want to turn a solenoid on for 5 seconds and then turn it off regardless of how long the switch is on for. We can do this with a simple external timer. But what if the process included 10 switches and solenoids? We would need 10 external timers. What if the process also needed to count how many times the switches individually turned on? We need a lot of external counters.

As you can see the bigger the process the more of a need we have for a PLC. We can simply program the PLC to count its inputs and turn the solenoids on for the specified time

007.27.09 Yes, we can see that!

to Electrical Control System, Telecommunication & Broadcasting — Tags: ,  

Have you heard the America’s SGIG program(Smart Grid Investment Grant program), and what do you think of today’s electrical control system, how does they work, communicate and monitor with each other.

Currently, the satellite communication technology has play a great role in the world, so the U.S department of energy put forward the SGIG program to encourage high-tech industry to improve power grid monitoring system of the country.

satellite-based power grid control and monitoring system.

satellite-based power grid control and monitoring system

The overall purpose of the SGIG program is to accelerate the modernization of the nation’s electric transmission and distribution systems and promote investments in smart grid technologies, tools, and techniques which increase flexibility, functionality, interoperability, cyber-security, situational awareness, and operational efficiency. The products developed must be marketable and deployed on a commercial scale.

It is reported that AML Communications’ wholly owned subsidiary Mica-Tech, Inc. has filed a letter of intent with U.S. Department of Energy, stipulating that Mica-Tech intends to apply for a matching grant of up to $2 million under the Smart Grid Investment Grant program to develop satellite-based power grid control and monitoring system.

electrical control system

electrical control system

More attention and more investment, we can see a bright future of the new concept of electrical control system.

007.27.09 I don’t care!

to Telecommunication & Broadcasting — Tags: ,  
CDMA VPN ROUTER

CDMA VPN ROUTER

Recently, there is a shocking news that appeared in major media headlines: Korean antitrust authorities slapped unprecedented heavy fines totaling 260 billion won ($208.7 million) on Qualcomm Inc. for violation of local competition laws. The San Diego-based company that holds key patents to CDMA ? or code division multiple access standard, which supports virtually all Korean-made wireless chip sets ? was accused of abusing its dominant market position to engage in unfair market practices.

 

This is really a shocking news both to us and Qualcomm, the world’s largest developer of CDMA. So what is the giant’s reflect, “give money without saying a word”. That’s impossible, They will make use of legal means confrontation with the Korean authorities.

It is clear that no matter who won the final, the result will lead a big change to the South Korean’s CDMA market.

CDMA Mobile Phones

CDMA Mobile Phones

Actually as a CDMA mobile user, I don’t care about the result who will win in the end, but I am looking forward to wireless communications products, mobile phones more powerful, more convenient to use!

207.24.09 Why Real Estate Near The High-Voltage Substations Are So Cheap?

to Power Transmission & Transformer — Tags: ,  

If you are concerned about the price of real estate, you may find some suites are much cheaper than others. So why? One reason maybe that they are close to a high-voltage substation.

You know there is a old Chinese saying: “There’s no such thing as a free lunch.” If you want to buy a flat like that, you must make sure that it does no harm to you!

A high-voltage substation must contain many high-voltage equipments, such as transformer, Converter, High Voltage Transmission Lines and so on. Besides high-voltage may produce electromagnetic radiation around.

Attention! it does harm to our body. Now let me tell you some hazards to human by High-voltage substation’s electromagnetic radiation:

Transformer

Transformer

  1. It is very likely one reason that children suffer from leukemia.
  2. Able to induce cancer and accelerate the proliferation of human cancer cells.
  3. Affect the reproductive system.
  4. Can lead to missing children’s intelligence.
  5. The human visual system is affected.
  6. Noise pollution.
  7. Fire and explosion.
  8. High lighting hazard areas.
  9. The leakage of toxic chemicals.

Oh, my God! How dare a person live in such houses, at least not me!

007.24.09 Give you a PCB amateur’s production by the indigenous law

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Hardware:

1. A print-output device used to produce plastic high-precision solder layer of toner, such as a laser printer or a photocopying machine (copier, then the need for the original copy, the original ink-jet printer can print out).

2. An electric iron.

3. A smooth stickers at the end of Backing Paper.

4. A certain amount of ferric chloride etching solution, according to the size of the board. Added that it is better to have a digital thermometer ranged from 0~200 degrees.

Software:

Low version of PROTEL, such as PROTEL2.5, or PROTEL99SE.

2

One Kind Of PCB Board

Steps:

1: Using a software mentioned above to generate a number of image files, for example, you can organize SCH with low version PROTEL, then generate the corresponding PCB map using network table, or directly using PowerPCB figure PCB, for printing.

2: The PCB plans to print to heat transfer paper.

3: Put the well printed PCB heat transfer paper flatly on the CCL, prepared for transfer.

4: Heating with electric irons, pressure the black plastic powder of the transfer paper on CCL to form high-precision layer to prevent corrosion.

5: The success of iron transfer pressurized heating effect! If you engage in regular, skilled, it is very much easier.

6:Prepare ferric chloride to go on corrosion.

7: Careful! not to over-corrosion, when corrosion is of the end, get ready to weld.

8: Load the milling cutter to the bench drill, clean up the part of the pad, and the remaining part is for solder.

9: Install scheduled parts and weld.

Notes:

1.Do not make the iron too cold or overheated, the best temperature is between 140 ~ 170, within this temperature range, plastic toner transfer characteristics is the best.

2.Open the transfer paper when temperature is lower, slowly open, if you find there was not any good part of transfer, cover it again with heat transfer of pressurized heating.

3.If there is still some problems of some part (such as broken), please use oily carbon pen, nail polish, or paint to remedy, but this situation is not much.

007.23.09 Li-ion Battery, Good Choice For Hybrid Vehicles

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Tokyo (AP) — Japanese electronics maker Hitachi Ltd. said Thursday it will supply lithium-ion batteries for hybrid vehicles to General Motors Corp in 2010 and sharply raise production capacity to meet surging demand for gas-electric cars.

A hybrid vehicle is a vehicle that uses two or more distinct power sources to move the vehicle. The term most commonly refers to hybrid electric vehicles (HEVs), which combine an internal combustion engine and one or more electric motors.

Ford Escape Hybrid the first hybrid electric SUV and first hybrid electric vehicle with a flexible fuel capability to run on E85

Ford Escape Hybrid the first hybrid electric SUV and first hybrid electric vehicle with a flexible fuel capability to run on E85

A hybrid electric vehicle (HEV) is a hybrid vehicle that combines a conventional propulsion system with a rechargeable energy storage system (RESS) to achieve better fuel economy than a conventional vehicle. Its secondary propulsion system, additional to the electric motors, means that it does not require regular visits to a charging unit as a battery electric vehicle (BEV) does.

Toyota Motor Corp.’s hybrids now use nickel-metal hydride batteries. The world’s largest automaker said last month it will use for the first time lithium-ion batteries for its plug-in hybrid cars.

So the question is, what makes these batteries so energetic and so popular?

Lithium-Ionen-Accumulator

Lithium-Ionen-Accumulator

Lithium-ion batteries are popular because they have a number of important advantages over competing technologies:

  • They’re generally much lighter than other types of rechargeable batteries of the same size. The electrodes of a lithium-ion battery are made of lightweight lithium and carbon. Lithium is also a highly reactive element, meaning that a lot of energy can be stored in its atomic bonds. This translates into a very high energy density for lithium-ion batteries.
  • They hold their charge. A lithium-ion battery pack loses only about 5 percent of its charge per month, compared to a 20 percent loss per month for NiMH batteries.
  • Lithium-ion batteries can handle hundreds of charge/discharge cycles.

Using a lithium-ion battery will produce more energy, allowing hybrid cars to run more as an electric vehicle, but there have been some technological hurdles.

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