10 Ways to Have a Grand Home Theatre Experience

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Your TV Experience sucks. Thanks to bunch of cables, huge boxes, poorly-handled connections, endless outputs, input that you have no idea how to deal with. It’s a dreaded job each time to call up for help and snub-nosed mechanics that don’t show up for such “petty issues”.

But, to tell you the truth, it’s no giant work. Home theatre set-up is easier when you have a glimpse of guidelines by digital Electronics video tutorial to check if everything’s well-connected so that your channels runs smooth and you make the most of the system. Do away with the hassles and optimize your cinema experience.

Speaker Positions Simple Guidelines

Follow our electronics tutorial to position your speakers strategically to have the best home theatre experience.

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    If you want the best sound quality, understand the position and role ideally assigned to each speaker. Select the centre of room.

  • Position the speaker’s angles at this focal point. If you’re sitting, the height of the Front Right and left speakers should be kept in ear’s level—45 degree angle form the central seat. It widens the range of sound, surrounding you with the thrill of the big screen.
  • Centre Channel Speaker should be placed either below the display or above.
  • Surround Right/Left speakers should be kept at least 2 and a half feet higher than the viewer. This covers the room with strong special effects.
  • If you have several Sub-woofers, place them on the walls—exactly at the middle. And if you have only one Sub, hang it on the front wall—the screen direction.

Tune Speakers to Boost Sound

Even if you follow the rules mentioned above, you may not get the best of what your speakers might offer. Because, one room may not be similar to the other.

  • You have to give it a listen quite a few times to familiarize with the speakers position, angles and height.
  • Online Electronics video tutorials would suggest you to experiment by repositioning to enhance the sound kick of a home theatre.

Clear Way

  • Make sure that no piece of furniture blocks the path between the centre viewer’s seat and the speakers. The path should be unobstructed.
  • Keep the walls dark to have a rich visual delight. Keeping walls dark and windowless would make you real room fade into black when you dive in the cinema world.
  • Acoustic panels to soundproof the room can give a groovy sound quality completely obliterating the noise and commotion from the world outside. In addition, your neighbours would not complain!

So, pamper your senses with the chill of booming sound system and keep checking electronics video tutorials for more fun stuff. Happy movie-time!


How to Make AM Radio-Receiver for Beginners

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It’s very simple to make an AM radio receiver with help of just a few electrical components. Electronics video tutorial services can lead you with grace, through the easy steps of building a radio at home. First know how the basic gears work inside a radio.

  • An antenna can catch electromagnetic waves from the air and turn them into electrical signals
  • A tuner to point out the specific carrier frequency—which corresponds to the radio-station that you want to tune to.
  • A diode or detector that avoids high-frequency signals. But grabs low-frequency ones.
  • After the detector catches the signal, an amplifier is required to enhance the signal.
  • A speaker in the radio is the one where sound comes from.

Now let’s get down to free electronics tutorials to the Steps to build a Radio

  • First collect the materials vitally important, as mentioned above.
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    For building antenna, a piece of wires required, long enough to catch signals. The ideal length of the antenna wire should be 50 feet. But you can also do with a smaller one. Hang a coil (5 inch high) around a plastic tube and now attach the wire to the coil.

  • A wire coil here can be used as “inductor”. Now in order to build a circuit that tosses away all unnecessary, hullabaloo signals, you have to combine the inductor with a ‘capacitor’. This circuit can be marked as a ‘resonator’ now.
  • Now what the resonator does it to resonate on a frequency which depends on the indictor’s size. Unit of inductance is ‘henries’ and capacitance unit is ‘farads’.
  • Tuner coil can have 200 turns. One red insulation strip will mark it. The insulation scuffed on the top. To build the tuner, you can get a brass thin strip which will have one contact at end to generate electrical contact next to different point tagging with coil—at the point of insulation.
  • The brass strip should wrap around a screw, the contact slide athwart the coil, altering inductance. Near contact will make inductance small, the circuit plays to high-frequency radio-station. When contact tilts to other end. It lowers the inductance and it plays radio station with low frequency.
  • The diode or detector allows electricity to flow in one way. But prevents from flowing in opposite direction. “germanium” detector resembles a teeny-weeny glass cylinder.
  • Speakers are the source of sound. Online electronics video tutorial services illustrate how the speakers absorb the electrical signal and a small electromagnet inside helps a plastic paper flutter from side to side, generating the sound coming out of it. Use a small speaker like you see in a portable radio.

How to Make Automatic Light for Your Room

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Does it happen to you that you walk into the washroom sleepy-head at night and walk out without noticing whether you have switched the light off? Well, it may not matter to you a lot but when the world is switching to conservation of energy; it’s about time that you could add little smarts to your electricity usage.

How about if you enter a room and leave without even worrying about it and it gets automatically switched on and off! Wouldn’t it be awesome if you could make one on your own and surprise your folks? The right digital electronics video tutorials can show you how!

Functions of Automatic Light

It’s no magic it’s just a ‘reed’ switch that senses when you open and close your door. It’s a relay-thing in its function of passing on electricity. But a typical relay runs with application of coil voltage. But reed switch begin to act when it can trace magnetic field in close proximity. You can use a reed switch that closes in general state but opens when you put a magnetic field anywhere near it.

Learn how to light up your room automatically through Digital Electronics Video Tutorials. You have to attach the circuit to the room’s door where the light is placed. There is a magnet stuck to the door such a manner that it routinely comes near the ‘reed switch’ when you close the door. It acts like a simple Boolean Math. When you open the door the relay is on. Light switches ‘on’. Subsequently, the circuit is off when you close it resulting in light ‘off’.

Components of Automatic Light

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Chief elements in a self-controlled LED are—2xIR sensor module, Crystal (11 MHz), voltage regulator 7805, 8051 microcontroller and a relay-based light LED

So, how do they work on your circuit? online digital electronics video tutorials let you learn to deal with IR–the sensor called “Infrared Rays” can detect infrared waves. Here the IR transmits signals and a photodiode receive signals. You could make use of pins that offer TTL value on the basis of voltage. A potentiometer can adjust the circuit according to the varying accuracy and range.

The module must provide a high signal almost +5V when the reference voltage is lower than the generated voltage. And it should emit as low as 0V, when the voltage generated is lower than the voltage referred.

How to Recycle Electronics Items

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You don’t have to trash away your old electric gadgets any more. Donate them to make re-usable. In an age when the Earth from suffering irrecoverable loss of natural resources, you can do your share of recovery. Small electronics appliances are easy to recycle now.

In 2011, Unites States Recycling Industry took care of 4 million tons of second-hand, dead electronics appliances. Above 70% of such used devices are re-usable. Recovering materials from them as steel, copper, aluminium—extracting from these trashed items and using them in new product. Electronics video tutorials put on display how to repair or refurbish a previously owned product and make it ready to sell.

Facts about E-Waste

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EPA or US Environment protection Agency has reported that the every year, 1 percent of the entire country’s 210 million-tons solid waste is E-waste. The amount of digital electronics waste is increasing all over the world. With the rapid increase of digital electronics usage all over the world, online electronics video reveals a shocking figure of 220 tons of gadgets and PCs being trashed in the landfills—which poses a dangerous threat to the future.

Users change computers every 3-5 years and the gap between their old and new gadgets are rapidly closing. That is to say, people are more prone to change their digital items as quickly as they can afford. What’s more disturbing is– 130 millions cell phones had been dumped in 2005, heaping up to 65,000 million tons E-wastes. The numbers are alarmingly shooting upward.

How harmful are Digital Electronics Material?

When you chuck your TV or computer parts into the environment without a care, it can be hazardous. They contain plastic and are not bio-degradable. To our dismay, old-day’s heavy TV and PC carry the 4 pounds lead along with other toxic materials as cadmium, mercury, chromium etc. They can harm the nature quicker than we imagine. So, recycling solution relieves your area of this problem. Recycle smartly utilizes materials like aluminium, glass, copper extracting out of your old items.

What Small Electronics are recyclable?

Anything, all your old toys including smart phones, digital cameras, DVD player, TV accessories, computer parts etc. You can also sell and buy some electronics items that has been used before and currently lying useless at home. Many online retail services furnish the options to connect a buyer on the Internet, if the stuff’s still in a working condition. Learn recycling solutions from online electronic video tutorials and give second life to your old electronic plaything.

3 reasons why Blue LED shook the Earth

Japanese Genius Trio Wins Nobel—hope of better illumination comes real

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Shuji Nakamura, earlier had been just another scientist with a “hopeless project” as labelled by his employer. So, in order to pursue it, he chose spare time. But it proved people wrong, as it always did in the history of innovations, as one call woke him up at the dead of night and announced that he was to receive world’s most prestigious prize for it! Akasaki, Amano and Nakamura—have been awarded 2014 Nobel Prize for Physics for their ground-breaking invention of “Blue Light-Emitting Diodes”.

So, how Efficient is the Latest Blue LED really to bag a Nobel?

    • Traditional lightbulbs that we have been using since the 18th century are inefficient. How they work is by heating up the flimsy filament inside. It is literally a waste of energy as a substantial amount of heat is lost during this conversion. Fluorescents are more economical, in comparison, but nothing comes close to LED. Digital Electronics videos Tutorial shows that an LED produces light as negative electrons get hooked to “positive holes” It happens in the paper-thin semiconductor layer.
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      Scientists stuck to endless experiments for decades but failed to produce blue-light—the one with the highest detectable frequencies—which if converted into light will turn in more energy-saving that burns brighter with less power consumption. LED advantage is singularly outstanding! While the 19th century light-bulbs shone with 16 Lumen/Watt, the 20th century Fluorescent beat it with 70 Lumen per watt. Digital Electronics videos Tutorial illustrates with diagram that a LED glows with 300 Lumens! Blue LED has been just a distant dream for long. Now it has indisputably turned into reality.

  • Why has it been the stumbling point that blocked the path of energy-efficient Blue LED? While red LED already came to the market around 1960 and lit up digital watches and calculators, scientists kept brainstorming for a better solution. Something more cost-effective and powerful. Green and Red LED possess long and medium wavelength. The hardest part of the experiment was to find a material that would emit light with wavelength as short as blue. No one knew how to modify gallium nitride crystal to coax blue light. But these 3 Physics heroes cracked the hitch by sapphire coating aluminium nitride. What this digital electronics experiment did is to usher in a new era of light.

Know How Cell Phone Detector Works

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Lately googled George Clooney’s wedding? He requested his guests to put off their cells and cams just to place their supremely felicitous photos in ‘Vogue’. Not only celebs, common people want privacy too. A detector saves you of unwanted ogles.

Cell phone is the widespread electronics device—the easiest access to world communication these days. It’s a wonder how rapidly technology has brought it into play. What a mobile phone does is to deliver and accept signals of 0.9- 3 GHz frequency. Electronics tutorials available online shows you how you can detect an activated cell near you if you can design a circuit that can detect signals—it is also called a ‘sniffer’. It can track down a cell phone almost a metre away.

What Do You Need to Detect Cell Phone Signals?

Schottky diode can be used in a circuit to sense the signal transmitted by a cell phone. This diode has the unique potential sense cell signals pretty well, capable of rectifying low frequency ones with lower rate of noise. Electronics video tutorial can give you instructions on how you put an inductor near the source of RF signal, and then due to mutual induction, it can sense the signal. Schottky diode can rectify the signal now.

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      When a metal object is kept in the path where radio wave is passing, EM field induce AC currents of the same frequency of charged electrons.

    • When a mobile is half a metre near the loop, and the cell is being used to put radio wave on the air—that is to say, when it’s making a phone call or texting, the wave comes across the loop.
    • It directs s voltage to cross the antenna of the loop
    • To power the LED, the loop has to be resonant—size of one wavelength.
    • Any expert video tutorial on Electronics can educate you how the appropriate loop causes low reactance and good power between the LED and radio wave
    • As the detector is adequately close, the LED lights up.

Where Do You Need to Trace Cell Phone Signals?

Cell phone detectors have various practical applications.

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        There’s a lot of place that needs participants to remain silent! In exam halls if someone resorts to “unfair means” keeping phone silent to prevent getting caught, this circuit will catch him/her instantly. Even in meeting or a conference which needs to maintain confidentiality, can make use of cell phone trackers.

      • A cell phone ‘sniffer’ can put a stop to unauthorized capture of photo/video. A great aid to prevent piracy.
      • It also helps to trace stolen phones. Even in prisons inmates surreptitiously use cell phones. To get rid of this problem, mobile signal ‘sniffers’ come handy. Online electronics video tutorial can teach you how to get the signal correctly in the antenna.

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Analog and Digital- the basics of the circuits in Electronics

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Electronics branches out with several of its sub-genres such as digital electronics, analog electronics, consumer electronics, and power electronics amongst others. The electronic tutorials on analog and digital circuits are a great help when one is trying to grasp the concepts for practical use.

Taking a look at the basic sub fields of electronics, the analog and the digital, what are the basic components that divide the two? Apart from the basic difference of digital circuits being more flexible than analog ones which are custom made, there is a wide difference between both the forms of circuit. The fundamental components of electronics such as inductors, resistors, diodes, and capacitors inherently function based on the principles of analog electronics. The circuits that work with these electronic parts are mostly analog. If one refers to any analog electronic tutorial, it is evident that these circuits function with the help of continuing signals of value which are termed as analog signals. Analog circuits are either intricately designed or simplistic in nature. Although designing an analog circuit is tougher than a circuit that is digitally designed, many digital components are utilised to ease out the process of designing several analog circuits. But unlike digital signals, an analog circuit does not require signal conversions and an input signal which is analog in nature will automatically produce an analog output. And one advantage this direct input and output procedure provides is that there is no loss of information during the process, unlike the digital circuits. Though an important and a really basic subject form of electronics, analog circuits are more prone to being affected by voltage variations and other sound disturbances.

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Digital circuits however, are a comparatively newer subfield and work using more developed and discrete signals. A combined system of transistors and logic gates and for higher levels of circuits, microcontrollers are used. The most common example of digital circuit functioning is the microprocessor. Tutorials on digital electronics are a better way of studying the subject as they help in understanding the ways in which a digital circuit uses binary signals to process its instructions.

Analog and Digital circuit systems can be combined to facilitate conversions of signals in a better way as in the case of some microcontrollers, who have a digital system in working but have internal circuits that work well with analog signals for conversions from one to the another. One can learn more from the videos on electronic tutorials about the co functioning of analog and digital circuits.

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