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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

What will happen if crystal frequency of 8085 is increased from 5 to 20 MHz?

Since the 8085 has a maximum clock frequency of 6 MHz, increasing the crystal frequency from 5 MHz to 20 MHz, a corresponding clock frequency change of 2.5 MHz to 10 MHz, the chip would malfunction.

Can you charge your camera with outt the charger and with the batteries?

The camera operates on batteries,weather nicad( rechargeable) or alkaline or lithium.

So no matter what,you must recharge batteries. If you purchase rechargeable batteries

and the charger, you can recharge them outside the camera.

If you don't recharge batteries with the supplied charger,you will shorten the life span of the batteries or kill them.

What is the effect of holding current in SCR?

The effect of holding current (anode to cathode) in an SCR is to retain the turned on state, even in the absence of any gate voltage.

When used as an AC voltage controller, the SCR conducts from the moment the gate and anode goes positive until the anode goes negative on the next zero line crossing, irrespective of any further transistions on the gate.

How do you position the test instruments into the circuit ensuring the correct polarity and without damaging the circuit components?

That's a short question with a long answer.

For example, when observing waveforms in a printed circuit card with a 'scope, I like to use a 10X probe with a sharp needle tip. The 10X probe presents about 10 megohms to the circuit under test, so that it doesn't load it, and the sharp needle tip penetrates conformal coatings.

For example, when measuring voltages, use a 'scope set to DC coupling if accuracy is not critical. If accuracy is critical, I use a FET meter or a differential voltmeter, with a sharp needle probe.

When using a spectrum analyzer, various probe schemes can be used. One of my favorites is a sniffer probe consisting of six turns of #30 wire wound round a 50 ohm quarter watt resistor, on the end of a piece of thin 50 ohm co-ax.

For injecting a signal into a receiver, apply the signal across one of the input decoupling capacitors. The capacitor has enough impedance to allow the signal to be seen.

Each case is different, and it up to the technician to know enough about the situation to create a strategy.

What is the type of current in the maglev train ac or dc?

maglev train works on alternating current..The electric current supplied to the coils in the guideway walls is constantly alternating to change the polarity of the magnetized coils. This change in polarity causes the magnetic field in front of the train to pull the vehicle forward, while the magnetic field behind the train adds more forward thrust.

Who uses pole and transmission line hardware?

Pole and transmission line hardware is purchased by cable television and utility companies

What is the difference between voltage gain obtained with bypass capacitor and without the bypass capacitor?

A: A TRANSISTOR gain is determined by current flow on the collector by adding a resistor to the emitter this current flow is reduced by adding or bypassing this resistor with a capacitor the net effect is that this emitter resistor will be reduced in value as frequency increases therefore change gain as a function of frequency input

The dc output of a controlled rectifier is controlled by?

A: An SCR does not produce DC per say but rather is the result of rectification. THE GATE will turn on the SCR when there is enough current available on the SCR. The SCR will not however shut of when the gate potential is reduced or removed. the two way to shut off an SCR is by removing the gate potential AND reducing holding current OR inverting the potential on the anode

What electronic component will reduce 24 vdc to 9 vdc?

it really takes more than one component.


a circuit called a voltage regulator can do it. versions of this can be purchased as ICs.

What manufacturers make microwavs PCB's?

Some manufacturers that make microwave PCBs include Samsung, Sharp and Panasonic. Each brand has their own production facility that makes microwave PCBs for their consumer product line.

What is the time for the TV signal to come from the TV mast to your TV set?

The signal will move down the cable at from about 1/3 the speed of light to about 9/10 the speed of light, depending on the type of cable used. If there is a booster amplifier in the cable between the antenna and the TV set this will add more delay.

You will need to know the length and types of cable used (and look up their signal propagation speed) as well as the delay of your booster amplifier if your system has one to calculate the answer to your question.

Does a mixer convert analog signals to digital signals?

No, it just combines the selected inputs to form a single output.

There are now both analog and digital mixers, but on a mixer of a given type whatever signal type goes in comes out.

You need a converter to convert signal types.

What is a bicrystal?

A bicrystal is a semiconductor or similar device incorporating a junction of two crystals.

How do you measure a triac?

Using ordinary multimeter A1-A2 should show high or infinite resitance in both ways, G-A1 low ohms, less than 100r

Where can you get your i-pod fixed for a cheap price even when the iPod warranty is finished?

I got my I pod fixed at the nearest Future Shop. They did it for 20$, and they said that it would last me for another couple of years. Totally worth it!

Use junction in a sentence?

Go to the junction of route 25 and route 404 and turn right.

What is Disk de-fragmentation?

Put simply - it's the breaking up of a file into pieces so it can be saved to disk.

When you save a file, Windows simply looks for the first available free-space on the disk. It then saves the file - whether it will fit or not. If the file fits the free-space - end of story. If the free-space gets filled before the file is saved, Windows looks for the next available chunk of free-space and saves what's left of the file. The computer repeats the process until the entire file is saved.

Defragmentation - is a small program that uses existing free-space on the disk to 'join' all the fragments of a file together, before saving the file as one complete 'chunk'. If you have a lot of files on your hard-drive, it's a good idea to run defrag on a regular basis - that will help speed up the time the computer takes to process files.

What is intrinsic inotropy?

Intrinsic inotropy refers to starling's law: the strength of the heart's systolic contraction is directly proportional to its diastolic expansion with the result that under normal physiological conditions the heart pumps out of the right atrium all the blood returned to it without letting any back up in the veins. I.e. it is dependent upon blood volume and venous return. So the greater the blood volume, the greater the venous return and hence the greater the force of contraction.

Why only 60 degrees phase shift in RC phase shift oscillator?

In order for an oscillator to be stable, its total phase shift must be 180 degrees. The most common design of an RC phase shift oscillator is three identical RC stages in series, which means that each stage contributes 60 degrees. For more information, please see the Related Link below.