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Electronics Engineering

Electronics Engineering is a branch of engineering that deals with practical applications of electronic components, devices, systems, or equipment. Electronics are devices that operate on low voltage sources, as in electron tubes, transistors, integrated circuits, and printed circuit boards and use electricity as part of its driving force.

24,372 Questions

Difference between potential transformer and current trasnformer?

The difference between current transformer and potential transformer is that the secondary of a current transformer can not be open circuited while under service whereas that of the potential transformer an be open circuited without any damage to the transformer.

What is the function of vom in electronics?

Measure voltage, resistance, and on some meters current. Typically used as a troubleshooting aid.

Can electronics in standby mode consume same energy or power?

Generally, no; most electronic devices only consume between 5% and 20% of their normal operating power when in standby. Some devices like copiers or laser printers only consume a couple of percent of their normal power because printers consume a LOT of energy in normal use to fuse the toner to the paper.

How much would you sell an 20 inch Emerson Used Television Model EWF2004 for?

Considering the small screen size and the fact that it uses a CRT not a flat panel display, its unlikely anyone would agree to give more than $5 for it at this time. It might just be easiest to turn it in to an electronics recycler. Don't throw it in the trash, as this is illegal in many cities!!

What bands did the ATT Long Lines microwave tower 'wide-band' horn antennas operate on?

KS-15676 horns used were broadband 3.6-12 GHz. According to the actual specs; manual., they were designed to work between 3700 MHz to 4200 MHz. 5925 MHz to 6425 Mhz and 10,700 to 11,700 MHz on common carrier bands.

Why voltage gain is high in op amp?

A practical opamp is designed to approach the characteristics of the ideal opamp as closely as possible. The open loop voltage gain of an ideal opamp is infinite, so while this is actually impossible to achieve practical opamps are built with as high an open loop voltage gain as possible.

How many watts are required to start a 7 HP 12 VDC motor you want to start the motor on solar panel?

For calculation purposes 1 HP is equal to 746 watts. So you have a total of 746 x 7 = 5222 watts. The amperage will be A = W/V = 7222/12 = 435 amps. You can not start the motor directly off of the solar panel. You would need a large 12 VDC parallel connected battery bank to obtain the amperage capacity to start the motor. The solar panels would be connected to the battery bank and used to charge the batteries after the start.

Why is gold used as the reflective surface of some solar panels?

A thin layer of gold that is transparent to visible light but reflective to infrared light is used to keep the temperature of the panels down. This is important in space where the atmosphere does not block solar infrared light, but not needed on the surface of earth.

Why an ideal voltage regulation of a device has zero value?

An ideal regulator would hold the thing it is regulating (e.g. voltage, current, water pressure, motor speed) absolutely constant, or in other words with zero variation of that parameter. The quality of regulation in actual regulators however can only approach this ideal of zero variation.

Why do you need a clean room for integrated circuit design?

You don't need one for the design, but for the fabrication. The tiniest amount of dust can contaminate the substrate or create a short across microscopic circuits.

The reduction of airborne particulates in sensitive materials manufacturing is comparable to the reduction of living things (germs, microbes, viruses) in medical and pharmceutical environments.

How can you use an analog telephone signal to activate a digital relay?

There are many different ways this could be done depending on the purpose and exactly which analog telephone signal is to be used.

  • ring signal, this is a 120VAC 5Hz pulsed signal present between tip & ring when the phone is on hook and being called; a high voltage insulated optocoupler must be used to trigger a oneshot or flipflop that will control a relay driver to operate the relay
  • on/off hook switching, when on hook 48VDC is present between tip & ring, when off hook this voltage drops below about 10VDC; these states are probably best sensed using a level detector on a floating power supply (to protect against damage by the ring signal) and a high voltage insulated optocoupler must be used to control a relay driver to operate the relay
  • AF tone signal, this is a signal somewhere between 50Hz and 3KHz; a 600 ohm to 600 ohm transformer should be used to block the ring signal and DC on/off hook voltages, this transformer should drive an amplifier (and maybe a clipper) the output of which goes to one or more phase locked loops set to specific frequencies, the phase locked loop outputs each control separate relay drivers to operate the relays

Note: these are not the only way to accomplish this, in fact commercial off the shelf phone interface modules are available that will handle the ring and hook signals for you (maybe even including the relay drivers or even actual relays) and provide the AF signal ready to feed to the phase locked loops. Such modules may actually be the best way to start if you don't want to run the risk of a mistake that might cause the phone company to disconnect service for a detected fault that could damage their equipment.

Where can someone buy VOX amplifiers?

Vox amplifiers can be purchased at a variety of locations both online and in local stores. Music Arts, Musicians Friend, and Amazon offer Vox amplifiers for purchase online. Guitar Center is also a well-known musical gear store than offers these amplifier online or in-store for your convenience.

What is the super famous national semiconductor?

The famous national semiconductor was a manufacturer of semiconductors, with a specialty in analog devices and their subsystems. In 2011, the company became part of Texas Instruments.

What service does Gate 1 provide?

Gate 1 is a company which provide a travel service. They offer package holidays to popular holiday destinations around the world, as well as sea cruises and river cruises.

Where could a person buy amplifiers by Orange?

A person can buy amplifiers by Orange directly from their official website, Orange Amps. The products can be accessed under the Official Shop tab on the home page.

How expensive is a set of Crown amplifiers?

Crown amplifiers differ in price range depending on what kind you want. If you were to buy a new, small crown amplifier it would cost around 1000 dollars while a new, larger crown amplifier would cost around or above 2000 dollars. Crown amplifiers that are not new will likely cost less than a thousand depending on how complex and large the amplifier is.

What types of electrical waveforms do a function generator generate?

Function Generators is a type of electric equipment that generates waveform from 0.1 Hz to 111 MHz. Some function generators can also generate Am and FM frequencies.

Why you use mega ohm resistance in small electronics circuits?

Each resistor in a circuit performs a well defined function and its resistance is calculated by the circuit designer as the voltage across it divided by the current through it. Sometimes the value of resistance required is over 1,000,000 hms.

What TV shows are shown on G4 TV?

Some of the television shows on G4 TV include: Bomb Patrol Afghanistan, Campus PD, The 100 Video Games of All Time, X-Play, Cops, Heroes, Knight Rider, and Quantum Leap.

What can a communication degree be used for?

There are many career paths one may take after receiving a degree in communications. These include Broadcasting Station Manager, Advertising Sales Coordinator, Actor, Comedy Writer, Sports Caster or a Talk Show Host.

What does 425 VA refer to in electronics?

'425 VA' is short-notation for '425 Volt-Amps'. This value gives the number of Amps against the number of Volts, but referring to this as just 'Amps' is perfectly acceptable.

Why is amplitude of demodulated FM signal much less than modulated signal?

because demodulated FM is an audio signal, which the frequency is much smaller that is why it can be transmitted alone. It need carrier which has large frequency. Modulated signal is an audio signal + carrier that is why the amplitude is higher.

How can one get PCB design jobs?

Well firstly one would need a college education in computer software design. It may be called a Bachelors in science. The degree must specify computer technology, or software design. Then a person would need to create a resume with all of the experience with other companies if applicable. Send said resume to the HR department of PCB and wait. If PCB likes said resume the person would be called in for an interview.