Found 993 Articles for Electronics & Electrical

Smartphones are the friendly gadgets which have made everything reachable through a touch. They have occupied such a huge place in our daily lives that it is no wonder that for most of us, a smartphone is the first thing we look at in the morning and it is the last thing we see before going to bed.Now, there will certainly be some advantages and a few disadvantages while using any electronic gadget. Let’s observe them:AdvantagesKeep your loved ones in touch, either through calls, text or images, .which express the feeling in a sweet and amusing way.You may know where ... Read More

A 360-degree photo is which clicks the panoramic view of the whole image that surrounds the place from which the image was taken. These pictures deliver a virtual reality experience that enables the viewer to take a whole look surrounding the entire place shot. The image can be scrolled or swiped up, down, left and right to view the surroundings. It looks something like this:Wide UsageThe 360-degree spherical images are revolutionizing the way pictures are taken. These images are sure to bring a great change in film production, tourism, and wedding celebrations etc. where the audience will have a virtual ... Read More

The Leather is undoubtedly an expensive material as compared to its available counterparts. However, its luster and texture often get ruined with time. But we can avoid it if we handle it with a little care... gentlemen!!1. Let It Breathe: When we purchase a new leather belt, it is often packed in polythene. But once you start using it, use a cloth to cover it and wipe it off with a clean dry cloth.2. Hang Straight: Never swirl and bend your leather belt. Indeed hang it straight onto a hanger.3. Store It In Shade: Sunlight or any harsh radiant light tends ... Read More

LASER is an acronym for Light Amplification by Stimulated Emission of Radiation. The LASER action was first proposed by Einstein.Applications of a LASERA LASER can be used in many fields. Some of its usages are given here.Used In Welding and Melting: The laser beam welding is mainly used for joining components using high welding speeds and low thermal distortion.Used In Holography: The reason that a hologram cannot be made without a LASER source is that coherence length for laser source can be very high due to which sustained interference pattern will be recorded on a hologram. This suggests the indispensable ... Read More

Noise is an unwanted signal which interferes with the original message signal and corrupts the parameters of the message signal. This alteration in the communication process makes the message to get altered after reaching. It is most likely to be entered at the channel or the receiver.The noise signal can be understood by having a look at the example figure below.Hence, it is understood that noise is some signal which has no pattern and no constant frequency or amplitude. It is quite random and unpredictable. Measures are usually taken to reduce it, though it can’t be completely eliminated.Most common examples ... Read More

Among the modulation systems in the communication field, the DSBSC and SSB are the mostly used once till the VSB was invented. If the carrier is suppressed and the power saved is distributed to the two sidebands, such a process is called as Double Side Band Suppressed Carrier system, or simply DSBSC.The process of suppressing one of the sidebands, along with the carrier and transmitting a single sideband is called as Single Side Band Suppressed Carrier system, or simply SSBSC or SSB. In the case of Single Sideband modulation, when a sideband is passed through the filters, the bandpass filter ... Read More

Multiplexing is the process of combining multiple signals into one signal, over a shared medium. If analog signals are multiplexed, it is Analog Multiplexing and if digital signals are multiplexed, that process is Digital Multiplexing.The process of multiplexing divides a communication channel into several number of logical channels, allotting each one for a different message signal or a data stream to be transferred. The device that does multiplexing can be simply called as a MUX while the one that reverses the process which is demultiplexing, is called as DEMUX.Types of MultiplexersThere are mainly two types of multiplexers, namely analog and ... Read More

The FM receiver is the whole unit which takes the modulated signal as input and outputs the original audio signal. Radio amateurs are the initial radio receivers. They had got drawbacks such as poor sensitivity and selectivity.Selectivity is the selection of a particular signal while rejecting the others. Sensitivity is the capacity of detecting RF signal and demodulating it, while at the lowest power level. Both Selectivity and Sensitivity should be high for an FM receiver. To overcome these drawbacks of the ordinary receiver, the superheterodyne receiver was invented. This FM receiver consists of 5 main stages.RF Tuner SectionThe modulated ... Read More

A Magic Tee junction is formed by attaching two simple waveguides one parallel and the other series, to a rectangular waveguide which already has two ports. This is also called an E-H Plane Tee junction or Hybrid or 3dB coupler.The arms of rectangular waveguides make two ports called collinear ports i.e., Port 1 and Port 2, while the Port 3 is called as H-Arm or Sum port or Parallel port. Port 4 is called as E-Arm or Difference port or Series port.The connections are made by the side arms to the bi-directional waveguide to form both the parallel and serial ... Read More

Rat-race junction is a microwave device used when there is a need to combine two signals with no phase difference and to avoid the signals that have a path difference.A normal three port Tee junction is taken and 4th port is added to it, to make this rat-race junction. All of these ports are connected in angular ring forms at equal intervals using series or parallel junctions.The mean circumference of total race be 1.5λ and that each of the four ports is separated by a distance of λ/4. The below figure shows the image of a Rat-race junction.Let us consider ... Read More