How to Track the IP Address of Others

Many of the friend who asked how to let us know ipaddress opponent can chat, or ipaddress site. Here are the tips:)

     1. Track the IP address of a site

  To find the IP address of a site, we can do a PING to the site. How: Go to command prompt and typing PING www.situs-who-want-diketahui.com and press enter. It will appear the Ip address of the site.

     2. Track the location server (real address) of a site

     We can track the location of the server of a site simply by knowing the address on the site only. Try to open www.domainwhitepages.com Just enter the IP address of this site, or enter the site address and you will get full info about the server from the site include country and city locations.

     3. Track the IP address of the opponent we chat

     When you use Yahoo messenger, in fact we can know the IP address of the person we are chatting. how:

     :: Send a file on our chat opponents.

     :: Then go to Command Prompt (MSDOS) and type NETSTAT-N and press enter, then the IP address of your opponent chat (you have to send the file earlier) will appear along with the port used for sending files

Listen

Read phonetically

Rate translation

Read more »

Tap Changer At Transformer

Tap changer is a tool of change to get a voltage transformation ratio of secondary operations better (desirable) from the line voltage / primary changes.

To meet the voltage quality of service according to customer needs (PLN), the output voltage (secondary) transformer must be changed as desired. To meet this, then on one or on both sides of the transformer winding is made tap (tapping) to change the transformation ratio (ratio) transformer.

There are two ways to work the tap changer:

1. Changing the tap in the transformer no-load conditions. The tap changer which can only operate to move the transformer tap transformer in a state of no load, called "Off Load Tap Changer" and can only be operated manually (Figure 1).

2. Transformer tap change in circumstances under load. Tap changer that can operate to move the tap transformer, the transformer is under load condition, called "On Load Tap Changer (OLTC)" and can be operated manually or automatically (Figure 2)

The transformer is installed in substations in general use tap changer which can be operated in an overloaded transformer and mounted on the primary side. While penaik voltage transformer in a power transformer capacity or in small, generally using the tap changer is operated only when the transformer no-load power.

OLTC consists of:

1. Selector Switch

2. diverter switch

3. transition resistor

To isolate the transformer from the body (ground) and to reduce heat during the process of moving the tap, then the OLTC immersed in insulating oil which is usually separated from the main transformer insulating oil (there are several transformers that compartemennya become one with the main tank).

Because the process of displacement relations in the oil tap electrical phenomenon, mechanical, chemical and heat, the OLTC insulation oil quality will quickly decline. depending on the amount of work and abnormalities in the OLTC.

Hopefully helpful,

link : http://dunia-listrik.blogspot.com/2010/04/tap-changer-perubah-tap-pada.html

Read more »

electrical frequency phenomena

Speaking of the power frequency can not be separated from the analysis of power plant / generator, because the source of it. For non-electrical yg schools that still lack what is the frequency I try to love the picture here.

Is actually a characteristic frequency of the voltage generated by a generator who. So when it says 50 hz frequency, mean voltage of a generator resultant change in value over time, its value is changed repeatedly as many as 50 cycles per second. so the voltage from zero to a maximum value (+) and then zero again and then to the maximum value but her turn (-) and then zero again, etc. (if depicted graphically will form a sinusoidal wave) and this happens once in a fast-time, 50 cycle in one second. So if we look at electrical loads such as lamps, had in fact repeatedly lost its voltage (aka zero) but because it occurred within a very fast then the lights are still alive.

So if we observe this phenomenon and try to experiment, let's create that if the frequency is low, we take such a conservative who hz, what happens then every one second voltage will be lost and then the light will appear to the death over and over again like a light flip-flop (see animation on the right).

From the above analysis we can pull the conclusion that the electrical load required for stability on high frequency voltage to be really smooth (do not feel life and death). Now the question arises why 50 hz or 60 hz why not made it on high all 100 hz or 1000 hz'll really smooth. to understand this we have had to trace analysis down to the generator. Yg yg-frequency voltage is also called alternating voltage (alternating current) or the VAC, the frequency is proportional to the rotation generator. In the formula N = 120f / P

N = rotation (rpm)

f = frequency (hz)

P = number of pole pairs of generators, typically P = 2

Using the formula above, to produce a frequency of 50 Hz then the generator should be rotated with the rotation N = 3000 rpm, and to produce a frequency of 60 Hz then the generators need to be rotated with 3600 rpm spin, so the louder we play the greater frequency generator. Well then what's the problem? why do not we just turn the generator with a super fast round a big let generate frequency so that the voltage benar2 smooth. If we want to play then we need a turbine generator, the higher the rotation we want the greater the required power turbine, and subsequently the greater the energy required to rotate the turbine. If the energy source steam then steam it needs more and multiply, and the greater the amount of fuel it needs, and so on and so on.

The generator and turbine manufacturers certainly have limitations and of course, after the producers experimented for decades with regard to all the technical angles then be made standard yangg 50 hz and 60 hz it, which of course was considered quite effective for the stability of the load and efficient technical and economic side. Europe uses 50 Hz and Americans use 60 hz. After standardization, all electrical appliances are designed to follow this provision. So logically if 50 hz or 60 hz alone was able to make the invisible light blinking to let alone made a higher frequency that will require a turbine super tight and resources so that more energy efficient.

Both the voltage and frequency of the generator can vary the amount based on the range from zero load to full load. often we meet the specifications mentioned plus minus 10% voltage and frequency plus or minus 5%. This means the system supplies electricity / generator must be designed at full load voltage drop does not exceed 10% and at zero load voltage does not rise above 10%, as well as frequency

source : http://dunia-listrik.blogspot.com/2010/09/fenomena-frekwensi-listrik.html

Read more »