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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

Which protocol is used for serial communication?

There is a wealth of protocols used with serial communication. For example, USB, SATA, or Firewire are all well-established serial protocols, mostly aimed at master-slave communications between a master device and peripherals.

RS-232 (EIA-232) or RS-485 are probably expected to be included in this listing, as they are very long-standing serial forms of communication and typically combined with the . In the context with protocols, it is however important to note that these only define the physical layers, the means of moving one byte from A to B, but do not define any of the logical layers (how to interpret the data).

Most network adapters such as an Ethernet adapter work serially (bits are transmitted and received one by one, not multiple at the same time), so these could be considered a serial protocol.

Countless other forms of asynchronous and synchronous serial communication exists and are in use.

How do you write each power as a product of the same factor?

The exponent tells you how many times the base is used as a factor.

10^4 = 10 x 10 x 10 x 10

What is the absolute value of -13?

The absolute value of a fraction would be done by this:

ex. 3/10 is equivalent to .30 or just .3 the absolute value of .3 is .3 because an absolute value is the number of spaces it takes to get to zero on a number line. KILL ME

What is the difference between electronic switch and electronic relays?

In an electronic switch there are no mechanical/moving parts - the switching action is achieved entirely within the electronic components. Electronic relays are generally a mechanical switch controlled by electronics.

Why inductance should be low in decoupling capacitors?

Inductance should be low in decoupling capacitors because the purpose of the decoupling capacitor is to absorb voltage transients due to suddent shifts in current due to switching activities, such as in a logic gate or high speed op-amp. If significant inductance were present, the power pin on the device would be allowed to dip or rise in voltage, potentially destabilizing the circuit. As circuit switch time becomes less and less, decoupling becomes more and more important. Even a short wire has inductance, and at the higher frequencies encountered in high performance circuits, that inductance becomes a critical factor. As a result, decoupling capacitors are place right next to the device being protected, often right across the power pins.

What observation is made when using a bigger value for a capacitor in a full wave bridge rectifier?

bigger capacitor value will make the discharge taking longer time and that is willmake the curve is closer to dc line which means the higher capacitor value will help to have a closer signal to the dc and reduce the ripple voltage

How do you find the secondary to primary transformer voltage ratio?

Turns Ratio = (Primary turns / Secondary turns) To calculate the turns ratio you have to actually know the number of turns or wraps on the primary and secondary coils. Nobody knows that usually the manufacture of the transformer doesn't even know. So what you can use as and equivalent is to calculate the voltage ratio. So what you typically need to look for is the Input voltage and divid it by the output volatge. Usually that would be as follows; (Primary Voltage/Secondary Voltage) = Voltage Ratio

Full form of Ce related to electronics?

For the chemical view: Ce means Cerium, element number 58, symbol Ce (second of the Lanthanides):

Electron configuration: (K,L,M,N,O,P) 2, 8, 18, 19, 9, 2

If one of three lamps blows out when connected in parallel what happens to the current in the other two?

If three lamps are connected in parallel and one blows out, the current in the other two does not change. This assumes that the net change in total current does not cause the power source to change voltage.

What is leakage resistance in RC circuit?

Leakage resistance in any circuit is resistance less than infinity where it is not expected, such as across an insulator. In the ideal sense, all circuits have leakage resistance because no insulator is perfect, but we usually ignore this except in special situations because it does not normally matter in real applications. In an RC circuit, leakage resistance would most typically be across the capacitor.

How DC is converted to square pulse?

The easiest way to convert the DC Voltage to pulse is simple astable multivibrator. This can be achieved either directly by astable multivibrator ic's or using normal transistor and resistor combination circuits or by using 555 as astable multivibrator.

Which element is not suitable to dope silicon to produce an n-type silicon?

Hydrogen, Helium, Lithium, Beryllium, Oxygen, Fluorine, Neon, Magnesium, Iron, Cobalt, Cadmium, Ruthenium, Iodine, Xenon, Iridium, Platinum, Uranium, Plutonium, Americium, and many more.

The only four elements that are suitable are easier to list: Nitrogen, Phosphorus, Arsenic, and Antimony.

How is the white spot formed on the screen of a cathode ray oscilloscope?

The screen is coated in a thin layer of phosphorous. This glows when bombarded by electrons.

What property of the materials used in computer chips makes them useful as switches that turn electric current on and off?

They are semiconductors and their electrical properties can be very precisely controlled by adding dopant impurities to create a wide variety of components integrated into one chip. Transistors of various types created by this doping process can act as switches or amplifiers depending on the other components integrated around them and connected to them.

I have a Hitachi 50VS69A television how to get the video setting to 1080I?

It's not a 1080i tv. That is why there is no 1080 selection, or whatever you are doing. You should probably pay attention to things before you go spending your money.

Actually the answer above is very wrong, The hitachi ultravision 50vs69a does produce a picture up to 1080i

I have owned one for 2 years now and it's bar none the best tv I have ever had. If you can't set your definition to 1080i it's probably because your component out does not offer that options. If the connected device does not go to 1080i it will not appear as an option. Now if it does then your tv is screwed up so call a repair service. This is not a joke the Hitachi 50vs69a is 1080i

Please ignore the Einstien above that offered that first ridiculous answer, he doesn't know what he's talking about

Where can you find a manual for the military PSM-6 multimeter?

It is now online under google books, and is available for free. Both the users manual and the depot maintenance manual

Can active speakers be used with an amplifier?

Yes, there are many types and models of amplifiers. Some have built in LINE OUT options and others require work. Active speakers are just speakers with their own built in amplifiers that supply power only to their own speakers or additional Sub Woofer.

With some Guitar AMPS it is necessary to daisy chain (Think Jimmy Hendrix) the input jacks from one amplifier and bridge the guitar signal from one channel to the input of the second amplifier via a jumper cable. Phase (Timing of the speakers) becomes a challenge or in Hendrix case an asset, but it works.

When you have only one channel jack and no Line Out options you can simply MIC the speakers of the first Amp and play the sound through a second (PA) amp.

What are the effects of under voltage?

The effects on what, exactly. I can tell you the effect on an incandescent light bulb. If an incandescent light bulb is supplied with a lower voltage than its design voltage, then the light will not be as bright or as white as the designer intended. But maybe you weren't asking about a light bulb. What were you asking about?

What does MRI scans features so periventricular leukomalacia means?

My son's MRI impression reads -MRI scans features s/o periventricular leukomalacia. The Neurologist told me it is a scar of brain. I want more explanation on this regard. While my son was under going treatment for ALL, he had high fever due to infection. One night he had convulsion followed by coma. The doctors told me he had no chance of survival since he had brain remarriage .It was their fault because instead of giving him platelates prescribed by the relived doctor, the reliver doctor had given him plasma. CTscan could not be done at that time because my son had allergic to a tranqualiser.He was two yrs old. Since he is having petit mal now at the age of 15,we consulted a Neurologist who advised for MRI and EEG.

Definition of low impedance medium impedance and high impedance?

For instance: A microphone rated at 150 ohms to 300 ohms is considered low impedance. About 600 to 2 000 ohms is medium impedance, and 10 000 ohms or more is high impedance.