little beating motor big output

!: little beating motor big output

jesus im not rewriting the description right now cause i had to upload this like 5 times .. long story short.. want more juice? add more coils.. in parallel... the cfl is lighting cause im using the secondary from the larger transformer coil in unison with the primary's output from the transistor.

little beating motor big output

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Testing a Transformer - How To Accurately Test A Transformer

!: Testing a Transformer - How To Accurately Test A Transformer

There is two types of transformers in the market- linear transformer and switch mode power transformer. The transformers design is different. Sometimes it is just referred as ac transformer. Linear transformer mostly used in radio, project kits, VCD and etc while switch mode transformer can be found in Monitor, Tv, Fax and so on.

A transformer consists of two or more coils wound on the same core. For power transformers, the core material is usually iron. For a radio-frequency transformer, the core material is usually ferrite or air. The basic property of a transformer is to change AC voltage. A transformer cannot change direct current voltage. A step down transformer has a lower AC output voltage at its secondary winding than the AC input voltage to its primary winding. Conversely, a step up transformer has a higher secondary than primary voltage. The transformer laminations or coating of shellac, enamel or varnish is to insulate adjacent turns from shorts between winding. I will not go too details about how transformer work and transformer calculation as you can read more details from most electrical and electronic transformers books.

How to test transformers: Transformer failures are relatively rare in most electronic equipment, compared with other components. If too much current goes through a coil or winding, the winding heats up and can either open up completely, or the insulation between turns of wire can break down, causing the coil to be partly or completely shorted.

Just like a coil, you can check continuity of any primary or secondary transformer winding. The actual value of DC resistance you read is rather meaningless, but at least you will know whether a winding is open. Checking linear transformer is quite straight forward. Apply the ac voltage to the primary winding and expect output voltage at the secondary side. No or low output voltage means the transformer winding has open or shorted winding. Look for any evidence of overheating, such as darkened or blackened areas or a burnt smell.

About how to test a power transformer-it is a little bit complicated. You cannot apply ac voltage to the equipment and expect the desire output at the secondary side without connect to load otherwise over voltage will happen (because you have removed all the secondary load) and will blow the power section which consist of power fet, pwm ic and etc. Switch mode power supply are designed to run with load while linear transformer can be test without load.

The best way to test a switch mode power transformer is first remove it from the board. Check only the primary winding as secondary winding failures are exceedingly rare. How do we know which one is the primary winding? Trace from the big filter cap the positive pin to see where the circuit goes. It will go to one of the pin of the transformer. Then look for the power fet middle pin which is the Drain and it will lead to another pin of the transformer. This two pins is the primary winding of the transformer. Checking the resistance of the primary winding only can reveal whether it is open but it cannot check if it has developed a shorted winding. Only by using a ringer test you will know if it shorted or not. A shorted turn in the primary winding can cause the power section to blow.

The cheapest ringer tester that i came across is Dick Smith LOPT METER or flyback tester. Just connect the probes to the primary winding and the result are instantly seen from the Led bar graph. 4-8 bar represent a good winding, 1-2 bar represent partial short and if the led goes off means there is a heavy short in the winding. Besides checking the transformer it can be use to check B+ COIL, horizontal yoke coil and flyback primary winding and ballast (choke).

The expensive ringer tester is from sencore equipment. Sencore LC102 and LC103C besides checking capacitor it also have the capability to check all kind of winding. Whether it is a low voltage transformer, high voltage transformer, current transformer, pulse transformer, electric transformer, custom transformer this equipment will be able to check and test it.

If you do not wish to invest on this tester you may use a light bulb to check it. Remove one of the primary winding pin and connect a 60 watt light bulb. One end to the circuit while the other to the transformer pin. If the bulb light and didn't goes off suspect a shorted winding and if the light goes off, the winding is ok.

Transformer repair is not easy and it require a good skill to do it. Most of the transformer repairer preferred to rewind bigger winding such as fan, car alternator and starter. Switch mode power transformer is a little bit difficult to rewind because of the small size and low price.

Testing a Transformer - How To Accurately Test A Transformer

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Scorpion EXO-900 3-in-1 Transformer Helmet - White - Small

!: Shopping Scorpion EXO-900 3-in-1 Transformer Helmet - White - Small look to

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Above Ground Vs Below Ground Power

!: Above Ground Vs Below Ground Power

Underground power, until now, has been overlooked in the way we set up our infrastructure. We use above-ground power almost exclusively because it's easy to install, cheap to buy the materials and, most importantly, it's the way we have always done it. Perhaps it's time to rethink our way of doing things in regards to installing something so important to our health, our welfare, our well being and, yes, even our way of life.

When an ice storm deposits ice on the power lines, often, the power is interrupted and people are inconvenienced. Sometimes, the power loss is so widespread that thousands of people have their power cut off. Some for hours, some for days or weeks, depending on the severity of the storm. Because of the rural areas that some people must live in, their power is even harder to restore. Above-ground power is susceptible to many hazards of weather, including high winds, tornadoes, hurricanes and even just the ordinary events of life, such as fallen trees, auto accidents, etc. We, as a people, need to improve and upgrade the supplying of electricity to our communities. One such way is to change over to a system of underground power.

Placing powerlines underground offers many advantages to the potential customer. First, there is greater protection from the elements. This reason alone should be enough to switch to below-ground power, but here are a few more good reasons. Electro-magnetic fields emitted by power lines are effectively shielded by being grounded. Trees don't have to be trimmed regularly to avoid endangering power lines. A citizen's property doesn't have to be given up except for the easement rights needed by the Power Company to install and/or repair the line. The price of lumber will drop because the need for Billions of trees to replace old or damaged poles is gone. Think about that one! In your city or town alone, there are thousands, maybe even hundreds of thousands of poles. That's a whole forest of trees. Birds by the thousands that are killed annually by electrocution will be saved. The landscape of our beautiful country will be enhanced by the absence of power poles. These are some of the many reasons why we should switch.

One example of a community using underground powerlines is a big one. Disneyworld, near Orlando, Florida, uses below-ground powerlines. There have been many times when they were the only community with active power. I recall, some time ago, there was a hurricane that shut down much of the power grid in Florida. Disneyworld, however, was not affected.

The high cost of installation would soon pay for itself when future storms and other causes cease to be a problem to the consumer. Also, other utilities would likely benefit by this installation. Cable installations come to mind as do future fibreoptic lines. Also, futuristic visions of superconducter powerlines would find a better environment underground. A further futuristic thought might be that an underground power grid would probably be more resistant to an EMP(Electro-Magnetic Pulse). I couldn't say, but the thought is worth investigating, wouldn't you say?

Let us consider these facts and any others that we may discover before we dismiss the idea out of hand. Our country's future and, indeed, the future of our children may depend on a much more reliable system of power delivery. The world is changing at a faster rate than ever before and shows no sign of slowing down. The thing to do is to stay ahead of the curve and prepare for the Millenium to come with foresight and wise planning.

Above Ground Vs Below Ground Power

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High Efficiency of Solar Generator Protection

!: High Efficiency of Solar Generator Protection

Have you ever considered the consequences of losing power in your home for more than a few hours? What about a few days, a week, or even longer? Our nation's power grid is vulnerable to natural or man-made disaster. Invisible and reliable electric power goes unnoticed until the lights or other electrical appliances won't come on. It would be prudent for consumers to prepare for more costly and less reliable supply of energy as our aging electrical grid falls behind demand. Every year natural disasters such as hurricanes, tornadoes, snowstorms and ice storms wreak havoc all across the country that leaves millions of people without power.

It seems nearly endless when you start researching power outages. Look what has happened in just the last six months with all of the devastating tornadoes and floods in America. It is not a matter of if but when an electrical disaster will occur!

Man-made outages could be just as devastating as anything Mother Nature can throw at us. Our nation's power grid is completely interconnected and highly vulnerable to collapse, especially in times of high demand. All it takes is failure in one area-which can be caused by lightning strikes, simple equipment failure or transmission lines sagging and shorting out on trees-to cause a "domino effect" of failures over large areas. It happened in 2003 when trees (in a rural area of Ohio) shorted out some lines, ultimately causing a cascading failure of more than 256 power plants.

The current opposition to nuclear and coal power will leave many with higher electrical costs. President Obama commented, "under my plan of a cap and trade system, electricity rates would necessarily skyrocket."

Solar storms are also of great concern. Solar storms occur when bursts of electricity erupt from the surface of the sun. Between now and 2013 the sun's solar activity is expected to hit a peak not seen since the 1800s. Severe solar storms have the potential to literally melt electrical transformers and other equipment.

In a report recently released from the Heritage Foundation, a leading U.S. think tank, national security experts warned President Obama about another catastrophic threat. If an enemy nation or even a terrorist detonated an electromagnetic pulse (EMP) weapon above the continental United States, the effects would be similar to that of as catastrophic solar storm...perhaps even worse.

In any case, whether by Mother Nature or man-made catastrophe, the only person you can truly count on is yourself to come to the rescue. The government proved that with Hurricane Katrina in 2005. It was reported that New Orleans went from a modern internet-driven society to a third-world country in the space of nine hours.

The use of a solar powered generator is one solution that will reduce electricity costs and protect consumers when the electrical grid is threatened. It would be a perfect solution to any "lights out" scenario you may find yourself in.

A solar powered generator collects free energy from the sun and sends it to the solar battery for storage or immediate use. Here are some of the benefits a solar powered generator offers:

*Instant backup electrical power in any outage.

*An endless supply of free electricity that is automatically stored for use when you need it.

*You are able to permanently reduce electric bills.
*There is available plug-in-technology that allows one person to set it up in a few minutes and immediately have electrical power.
*Solar powered generators have no maintenance, no noise, and no trouble starting in cold weather and do not emit any deadly fumes.
*Solar powered generators do not require gas.
*You will have total immunity to government interference and control. Remember, the government does not own the sun!
*There are multiple uses for solar power electricity. You could run essential appliances such as a fridge, freezer, a sump pump, cell phones, shortwave radios, TV's, lights, furnace fans, computers, printers and much more.

You can see that a little planning ahead can avoid great problems. Solar powered generators can be a very economical purchase that provides free electricity. Solar powered generators will only become more valuable as future natural or man-made failures of the grid are a reality for each of us.

High Efficiency of Solar Generator Protection

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