Month: August 2020

bookmark_borderHow to Connect TV to Your Computer or Laptop

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Tired of the look of your laptop monitor or computer that is only small in size? Want to try streaming, watching or gaming directly on a larger-looking home television screen?

Easy! Just follow these ways to connect your TV to your computer or laptop.

Steps required:

  1. Check the video output port of the computer located on the back of your PC or on the left or right side of the laptop. Some examples of common computer/ laptop ports include:
  • Port S- Video : round shaped with open end
  • Port Composite : round shaped with a needle-like tip, usually yellow
  • VGA port : square box shaped and is the main cable from PC to laptop
  • DVI port: box-shaped and almost similar to VGA, usually for HD laptops
  • HDMI port: similar in shape to a USB port but more flat and long, generally for HDMI televisions.

2. Then check your television input port, also usually on the back, but it can also be on the left right side or the bottom on the outside of the monitor. Generally for new output televisions, the average can only use hdmi ports. As for non-HD TVs, they usually use cables with rounded ends such as Composite or Port S.
3. Once you know the output and input tips, look for a suitable cable to connect the TV to your computer or laptop in the electronics store. If the cable between the laptop and the television is compatible, then all you have to do is buy a compatible cable. However if there is no suitable cable for both devices directly, you will usually be encouraged to purchase a cable adapter to convert to compatible.
4. Once you get a suitable cable, all you have to do is connect the TV to your computer or laptop. Remember to turn off both electronic devices first so that things don’t happen.
5. Once connected, start to turn on your computer or laptop and television. Set the settings from the available menus, such as HDMI or PC. Also specify the resolution of the television so that it fits and does not break or does not “pull” the screen into black. If it fits, then the output from your PC/ computer or laptop will already be projected through your television screen.

If you follow carefully the steps above, then the business of connecting the television to your computer or laptop will be very easy. But if you have followed and still failed, here are the possibilities:

  • The specifications of your computer or laptop’s video card or VGA card are too low for new connected televisions. The solution is to replace the computer’s VGA card.
  • If the video output is perfect but the audio still fails, it’s likely that your television can’t support separate audio yet, especially for those who don’t already have an HDMI port. The solution is to use an audio cable, which can be paired between the computer or laptop’s audio output to the television audio port or additional speakers.

To facilitate the process of connecting your television to your computer or laptop, just contact the Electronics Store who is ready to help with all issues related to electronic appliances in your home.

bookmark_borderHow television works

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How television works

A. The way television works in order to work and display images from your favorite tv stations, television consists of parts that support each other in order to function. In general, the television parts are Antenna, Power Supply, Tunner, Video Detector Frame, Video Booster Frame, and Audio Frame. Here’s an outline of how television works (see image)

1. The antenna serves to capture the wave emitted by television station

2. The signal that comes in the flow goes to the antenna plug that is on the television

3. The signal that comes carries sound waves and images because the waves received tv antennas are more than one sort (e.g. rcti station waves, ANTV, GLOBAL TV, SCTV, TRANS 7, etc.). The circuits in the television separate these waves (in the form of sounds and images) according to the tv channel you choose then in the process further. The separator is called Tunner

4. The electron shooter circuit uses this image signal to be reworked with the help of a tv

5 camera. This section fires three electrons (red, blue and blue) towards the cathode ray tube

6. An electron beam breaks through an electromagnetic ring. Electrons can be driven by magnit because they have negative electrons. And this electron beam will move back and forth on television screen

7. This beam of light will be directed to the screen with phosphorus. When this electron file hits the phosphorus it displays red, blue, and green dots. That doesn’t stay black. It is these color combinations that produce the images on television

8. Sound waves will be processed in this section to eliminate various ganguan

9. The filtered sound signal is emitting through a device called a speaker

B. The way the radio works The electric current flowing on the wire can make the direction of the compass needle deviate. This phenomenon revealed by Hans Christian Oersted is a sign that electric current generates magnets. And it proved correct that magnets could be generated from electric currents. Two coils with electric current will pull each other together like two magnit rods. On the other hand, if a piece of magnit is moved near the coil then electricity will be generated by the coil. The closer the magnetic rod to the coil, the greater the electric current will be. But no matter how close the magnetic rod is to the coil, no electric current will be generated when the magnit rod is silent. But only the transformed magnit is capable of generating electricity. The electric generator image is simple. The magnit rod rotated in the middle of the coil generates electricity. But if the magnit rod is still (not moving) there will be no electricity generated. Changing the magnitude (terrain) of magnit can be done mechanically, for example by rotating it. The magnit rod placed in the middle of the coil is rotated so that the magnit field that crosses the coil changes, so that the coil will generate electricity. This basic principle is applied to generators / power plants, namely machines that convert motion energy into electrical energy. Changing the size (field) of magnets can also be done electronically, i.e. by pouring an electric current (which changes) into a wire. Suppose this wire we call conductor A. Well when the electric current (which changes) then this kunduktor A will produce a changing magnetic field. This changing magnetic field can induce other conductors, e.g. conductor B. This induced B conductor (which changes) will generate an electric current even between conductors A and B that is separated by distance. Thus, conductor B can generate an electric current because conductor A is in the flow of an electric current (which changes). This principle of electromagnetic inductation is used in transformers. Conductor B is then called a secondary coil and conductor A is called a primary coil. Secondary coils will not generate an electric current when the primary coil is flowed by direct current (DC). At transformers the distance between conductorS A and B must be made very close, even secondary coils are often made to fuse with the primary coil circling the iron core. The goal is to get the most maximum power transfer. Unlike transformers, radio communication requires that the distance between conductor A and conductor B be distanced from each other. Consequently, a lot of energy is lost between the two conductors. In this case, the radiance had to be sacrificed, but the greater the range was gained instead. Working principle image (a) Transformer (b) Radio

Conductor A with an electric current (which changes) can induce a B conductor that is remotely separated by distance. Although the power received by conductor B is very weak, one thing is certain is that the change in electrical current generated by conductor B will always be the same as the change in electric current that occurs in conductor A. This is one of the most important things in radio communication, i.e. the signal received must be the same as the one emitted. Otherwise, there will certainly be miss communication. Meanwhile, the problem of weak signal in the receiver can be solved in a way such as: increasing the radiance or increasing the antenna gain. A changing electric current produces a changing magnite field. The changing magnit field produces a changing electric field. The changing electric field produces a changing magnite field. So on until the electric field and the magnit field spread in all directions. This phenomenon is actually a simple law of nature. It’s the same with objects that are thrown and then fall to the ground. The same is the case with electric-magnit. If there is an electric current that changes, electromagnetic waves will spread in all directions. Under the laws of this nature then in one place we can create a changing electric current (to generate electromagnetic waves) and then recapture it elsewhere (note the illustration in the image (b) above. This is the basic principle of radio communication systems. The transmitter converts electrical energy into electromagnetic wave radiation, while the receiving plane converts that radiation and makes it re-energize. Creating a changing electric current in the transmitter is very simple and easy. All it takes is an oscillator. The alternating current produced by the oscillator is then connected to a conductor A as an antenna. The goal is for conductor A to be flowed back and forth. As a result conductor A will produce a changing magnite field. This changing magnetic field will then produce a changing electric field, and the changing electric field will result in a changing magnetic field, so that electromagnetic waves spread in all directions. Until somewhere later, this wave radiation induces a receiver antenna. When hit by electromagnetic waves the receiver antenna will be induced (by a changing magnetic field). As a result the antenna will generate an electric current where this electric current will change according to the change in the magnit field it receives. This means that the receiver manages to capture the signal coming from the transmitter, and the signal received is exactly the same shape as the oscillator signal on the transmitter. The signal received is just a back-and-forth signal, where it contains no information at all. Such signals are often referred to as carrier signals. Without the information in it, the communication system becomes meaningless. Therefore it must be pursued in such a way that this carrier signal should be able to carry information. This effort is then called modulation technique. The way telephone phone works is a communication tool used to convey voice mail (especially messages in the form of conversations). Most phones operate by using electrical signal transmission in the telephone network allowing phone users to communicate with other users.
4. When the phone handle is lifted, the position of the phone is called off hook. Then the circuit is divided into two paths where the positive part will serve as a Tip indicating zero while in the negative section it will serve as a Ring indicating the number -48V DC. These two paths will then process messages from the sender to get to the receiver. In order to produce sound on the phone, the electrifying signal is transmitted via a telephone cable which is then converted into a signal that can be heard by the receiver phone. For analog technology, analog signal transmissions sent from the central office (CO) will be converted into digital transmissions. Numbers as phone numbers are specific frequencies that have hertz units. The main relationship in the circuit will be on hook when opened, then a vibration will appear. The sound that appears on the recipient’s phone indicates the phone is ready to use.

A. How Landline Network Works Using wireline system. so that it needs a cable in order to function. how landline works include: 1. The sound of the sender is received by the device that is stung by microphone 2. The microphone converts sound waves into electrical signals then channeled by the phone 3 device. The signal is transmitted via cable to the telecommunication center 4. From the telecommunications center, the signal is forwarded to the receiver 5. After getting to the signal, the signal is converted again into sound waves by a device called speaker B. How Mobile Phone Network Works using wireless system. the sender and receiver must remain covered by BTS (Base Transceiver Station). BTS is a device that facilitates wireless communication between mobile phone users. How wireless mobile phones work include: 1. Sound from the sender is received by a tool called microphone 2. Microphone converts sound waves into electrical signals and is then emitted by pnsel to the nearest BTS 3. The signal was received by BTS and the signal was forwarded to telecommunications center 4. From the telecommunication center the signal is forwarded to the nearest BTS then forwarded to the receiver 5. Once it reaches the receiver, it is converted again into sound waves by a device called a speaker.