May 1, 2012

Ups Downstream Distribution

The nature of the beast, as far as uninterruptible power furnish (Ups) is concerned, is power protection. Load connection to the source of uninterrupted power must be acquire and provision needs to be made for power distribution to vital loads. vital load connection will rely on either direct connection to the Ups yield or a form or power distribution unit. Load connection may be via a socket or hardwired, depending upon rating and currents drawn. Downstream distribution depends upon the factory format that has been chosen either centralised or decentralised.

Essential loads are those a power continuity customer cannot operate without and may include things like cost systems, transaction processing and other operational loads. vital loads are those that wish power protection, such as Pcs maybe and other back-office equipment but are not as crucial to performance as vital loads.

Uninterruptible Power furnish Connection




Decentralised Ups distribution commonly incorporates plug-in type units, which rely on standard socket outputs to furnish connections up to 16A in total. Larger current wish a hardwired connection to the yield terminals or maybe an industrial-type connector. Where there are many hardwired loads, a distribution board will be used.

External Bypass Connection

Where an external bypass is installed, it provides the point of connection for the loads; either directly (plug-in or hardwired) or via a distribution board. The bypass will have a hand-operated change switch or circuit-breakers, and may also include self-operating change switching circuit to furnish the factory with additional resilient if the Ups is accidentally removed or fails.

Distribution Boards

Distribution boards furnish a common point of distribution for the loads and are used for centralised systems, primarily. Each feed within the cabinet may be individually supplied via a suitably-rated circuit-breaker to furnish discrimination in case of a short-circuit. Within a large vital installation, two or more distribution boards may be provided, one for the uninterruptible power furnish (critical loads) and one for the generator supporting vital loads.

Power Distribution Units (Pdus)

Power distribution units distribute power to many plug-in loads, such as file server clusters. They are supplied with a range of socket lengths and combinations to accommodate any whole of sockets. Each Pdu is fused and may also merge someone else form of surge suppression, Tvss (transient voltage surge suppressors) for example. Within a rackmount cabinet, Pdus can be installed vertically or horizontally.

Intelligent power distribution units, which can be remotely controlled over a network, are becoming more prominent. Pdus should not be related daisy-chain fashion where more than one is being used. They are commonly individually fused and by powering one from another, a single-point-of-failure is being introduced into the power continuity system.

Automatic and Static change Switches (Ats)

These can be used in place of power distribution units, especially for plug-in type loads. They are typically relay-based.

Static change switches cater for high power ratings and can be hardwired for either single-phase or three-phase inputs and outputs. A positive advantage is that they are static switch-based and can be related in parallel to furnish added resilience.

A note or warning, however, with static change switches; care must be taken to ensure single-points-of-failure are not introduced on the yield side of the uninterruptible power supply. Each device is fused or related by a circuit-breaker, which should it rupture or open, will result in the load being dropped.

Ups Downstream Distribution

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April 27, 2012

Electromagnetic Chucks: The changeable holding Power advantage

Electromagnetic chucks can contribute changeable keeping power, which greatly improves their potential to maintain a wide range of machining applications.

Magnetic chucks are designed for keeping ferro-metallic work pieces with a strong, uniform keeping force. They consist of an accurately centered permanent magnetic face that works in conjunction with an operator actuated permanent or electromagnet. The work piece closes the magnetic loop to originate a gather anchor for the work piece.

Permanent Magnet vs. Electromagnet




Both permanent magnets and electromagnets can be used to furnish a magnetic keeping force. The choice of a permanent or electromagnetic construct is dependent upon both machining applications and externalities. Since permanent magnets do not need electrical power, they are best used when there's no power ready or it is unreliable. On the other hand, the magnetic field of permanent magnetic chucks cannot be adjusted, which can be a drawback for machining applications that need changeable keeping power. In applications where a changeable keeping power is required, an electromagnetic chuck is the best solution.

Electromagnetic Chuck Operation

Electromagnetic chucks are constructed with electrical coils wound around a steel core embedded in the chuck. To energize the electromagnetic field, a chuck controller is used to originate a changeable Dc voltage in the chuck's coils. The coil's electromagnetic field causes particles within the ferro-metallic work pieces to be aligned in a coarse direction. This alignment creates the electromagnetic keeping force between the work piece and the chuck. The chuck's poles are magnetic as long as voltage is applied. The operator can adjust the controller's Dc voltage to vary the impel of the magnetic field, which, in turn, provides the changeable keeping force.

The changeable keeping Power Advantage

Variable keeping power greatly improves the chuck's potential to maintain a wide range of machining applications that comprise cutting, milling, shaping, Edm, high speed cutting operations and thin work for grinding. Electromagnetic chucks can easily be interfaced with motor centers for automation purposes.

Variable keeping power is considerable for thin work applications. For example, when a part to be machined is thin-0.25 inch or thinner-and the part is presented to a motor operator as one of a stack of similar parts, the piece must be lifted from the stack. Permanent magnets are not designed to lift only one piece from a stack of ferro-metallic parts. However, an electromagnet with changeable voltage operate allows the operator to decrease the magnetic impel to the point where only one piece at a time can be lifted from a stack of parts.

Shop Safety

The changeable keeping power of electromagnetic chucks give it an advantage over permanent magnetic chucks. But their choice depends both on the machining application and shop safety. Since electromagnets need constant power to operate, a power failure can introduce a employee safety concern. While uninterruptible power supplies, power conditioners and battery backup systems can be integrated into the machining operations to address these concerns, the extreme decision depends on the construct of a single machining application.

Electromagnetic Chucks: The changeable holding Power advantage

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April 24, 2012

Micro Wave Oven Cooking and Its Impact

Any and every place that has electricity knows what Micro wave oven cooking is. Such is the popularity of this technology that was first industrialized in the 40s. It is legitimately remarkable how something that once stood at high as a door and was more expensive than a car, should come to be an considerable cooking tool today.

For ages man has found ingenious ways to cook. Yet the impact of this cooking tool is fully different. It has impacted our health, lifestyle, and our culture. From Tahiti to Thailand, population enjoy the benefits of this modern invention that has emerged as the extreme household 'helper'. Cook, bake, heat, re-heat and what not - it is simple, fits on the kitchen table, is affordable and most importantly does quick work. Therefore it is only fair that microwave oven cooking rules the kitchen. Yet a word of caution, it does not come without side effects.

The Wide Presence
The instrument is fundamentally designed to use a high voltage power source. A cavity magnetron converts electricity into waves and a cooking unit. When the supply is switched on, the waves are directed on the food to be cooked or heated by a wave director. Over the years it has evolved to comprise many added features. Today, a 10-year old uses it for popcorn while the grand mom uses it for her Sunday baking. Microwave oven cooking is legitimately easy. Practically every household in the Us and Canada owns a set today, thanks to the aggressive Japanese manufacturers. As much as we understand the scope of the instrument we must also talk its side effects. With such a huge whole of population using it, it is bound to create a cultural impact. Some experts also see it as a phenomenon coinciding with the altered eating habits of industrialized countries. Like in the Us a culture of obesity, sedentary lifestyle, food disorders and packaged food is often related to microwave oven cooking.




What we must understand here is that microwave oven cooking is now a part of our lifestyle. Therefore we must know its potential dangers. And not see it only as a quick fix solution.

What is engaging to note is that there are parts of the world and economies where population still do not use this cooking tool. They strangely seem to have lesser problems with their food. Japan, India, parts of Europe and other economies where the microwave oven cooking is still not so favorite live a healthier life.

Micro Wave Oven Cooking and Its Impact

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April 21, 2012

Electronic equipment fix - Can You absolutely fix It?

Electronic equipment repair? Yes it is true if you wanted to. Everybody has their passion since when they are young and some begin to know it at the later age. There are many kinds of interest and passions such as wanted to be a singer, dancer, artist, lawyer, doctor, police, scientist and so forth. But in this article, I'm talking about the passion of the electronics. Once you are inevitable that electronics is the field that you are going to venture in, then do your best to get the indispensable knowledge about electronics-look beyond the dollar signs. Find a job you are passionate about and you will growth your chances of having a long and successful career.

Do not give in to pressure from parents or other soldiery or base your decision on the money will make. You may get a good paying job but you may not necessarily be happy. If your work does not match your values, interests and personality, it will not be long before you feel the strain. You need the passion in you to keep yourself going on bad days.

Sometimes being passionate about your occupation is not good enough. You should consistently plan and put in order to ensure that your technical skills and abilities are on par with your occupation ambitions. Let's take this for example, if you want to be a good electronic repairer, you need to stay ahead of the learning curve and update yourself on new technical issues.




Ok, let's come back the topic of "You can do all kinds of electronic equipment repair". Why I want to bring up the word "Passion" because only passion that can help you to mend the equipment. Passion in you will tell you not to give up and continue to find the answers for the electronic problems. Passion in you will drive you to even a greater level of learning and comprehension of electronics troubleshooting. Passion in you that motivates you to come out with new ideas of repairing and passion in you will help to guide you on what are the next steps you should make.

If you do not have the passion for electronics, I guess you will find this description boring and immediately exit this description as fast as I sent it to you. Well, I hope you are not because I presumed you love electronics otherwise you would not have subscribed to become the Erg member.

First you must know how to test and quantum electronic components. There is no point for you even if you could able to recognize the defective circuit in the equipment if you don't know how to check and quantum basic electronic components. Assuming you have search that the vertical section was at fault causing one horizontal line in the display, but because you are weak in testing electronic components, voltage checking or even scope probing, your percentage of able to mend the Monitor would be not high. In order to overcome this problem, you must be able to test and check electronic components accurately by doing lots of practical test and read more facts about electronic components whether from the mend books or from the internet. You must pass this test first before going further. Once you had grasped the techniques of accurately testing electronic components, you have won 50 % of the battle.

Second, no matter what kind of electronic equipment you are repairing it will always start from "how this electronic equipment works". If you don't know how the equipment function or work, you will have the disadvantage and may wholly can't mend it. Take a look at this example, if the Monitor qoute is in the horizontal section and you terminate that the qoute is in the vertical section, you will lost countless of hours trying to find the faulty parts where honestly the caused of the qoute is in the horizontal section. In other words, if you do not know how electronic equipment works you will not know at where you want to begin the repair.

This scenario happened very common to beginners where they just started out in the mend field. In order to solve this problem, get the electronic board back home or whatever place you find convenience where you can gently analyse the electronic circuits. Ask yourself these questions such as "why this board need to have the optoisolator in the power supply"? Is the optoisolator functions are for overvoltage or overcurrent protection and etc? What is the part estimate of the optoisolator? What is inside this optoisolator and how to test it to confirm whether it is good or bad? What would happen if the optoisolator developed a short circuit? Will it cause the power supply to shutdown, produce low power or even power blink?

Hope you get what I mean. By asking questions yourself, you are honestly training your mind to understand more about electronics (in the above case is the optoisolator). Using this way on other parts of the circuits in the board and I'm sure one day you will undoubtedly truly understand the electronic equipment that you are trying to repair. If you can't find the answer, refer to electronics books, electronic mend forum or just surf the internet from separate quest engine (we have google.com, yahoo.com, msn.com, ask.com and etc) to get the respond you want.

Third, you need a schematic diagram to back up on what you are trying to understand on that single electronic equipment. If you want to understand how Lcd Monitor works then you should buy or download free Lcd Monitor schematic diagram and start to institution how each of the circuits works. Break the circuits into separate sections thus we have the power supply section, inverter, Lcd panel, mainboard and etc. Study and understand each of these circuits and start to ask questions as explained in the above. Similarly, this example is applicable to you if you want to mend Plasma or Lcd Tv or whatever electronic equipment.

Fourth, investing in you-Invest in yourself. Notice that the first rule of venture isn't "invest in your business" or whatever else other than yourself. While investing and reinvesting into your repairing business is important, investing in yourself is your first priority of investing. You may ask "What to invest in yourself"? When I said, "invest in yourself", I honestly meant that you should invest in your study (electronic mend courses), testing equipment, electronic mend books (either eBooks or physical books as long as the facts are very helpful), schematic diagrams, tools and other indispensable things production yourself better than you were yesterday. I think that by not investing in yourself by rescue the minute money you have honestly had robs you of your technical knowledge (that you should know) or even financial independence! Why allow the excuse of not having money steal your technical knowledge (that you should add more) from you? In the technical line, one should have to go forward and not backward or "still" for such a long time. That kind of "still" mindset not only didn't bring correction to your technical knowledge but also your life.

There was a saying which I found it to be true-"There are three types of persons in the world:

First-The one who make things happen.

Second- The one who wait for things to happen

Third- The one who doesn't know what happen.

I wish that you are not in the third category. You should be in the first category where you make things happen and not to wait for things to happen. Make your decision now as not to wait for things to happen. If you found that there are websites selling facts like the training manuals, schematic diagrams or even mend tips that can help you to understand more about the electronic equipment you are repairing then buy it. Let me tell you other fact is that "no one will walk to you and show you how this or that functions in full details" you just have to make things happen by seeing your own answers from the facts you had bought. How many times have you post questions in the mend forum and you did no get the reply? If you are the one in the second category (wait for things to happen) I can certify that even after many years in the electronic mend line you will still loose out to a beginner who has the mindset of production things happen. Those beginners have the mindset of spicy forward, invest (time and money), never give up, and willing to learn.

Conclusion-Do you believe now that you can do all kind of electronic equipment repair? I believe you can if you thought about corollary the steps that I had explained above. The hypothesize I write this description is to tell you that do not limit yourself, give yourself a occasion to change! citizen just don't like changes, they like their disposition things but if you are able to make changes in your mindset, you can honestly go additional of what you are doing Right Now! Think about it my friend.

Electronic equipment fix - Can You absolutely fix It?

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