Electronics Engineering

One way to increase the range of a walkie talkie is to increase the elevation of the set. Climbing a tree or a hill can increase the range significantly.

With the increase in temperature, the concentration of minority carriers starts increasing. Eventually, a temperature is reached called the critical temperature (85° C in case of germanium and 200° C in case of silicon) when the number of covalent bonds that are broken is very large and the number of holes is approximately equal to number of electrons. The extrinsic semiconductor now behaves essentially like an intrinsic semi-conductor.

coaxial cable

If two 1-ohm resistors are connected in parallel, their resistance is 0.5 ohms. If they are connected in series, their resistance is 2 ohms. It is not possible to connect only two resistors in series parallel.

Truth table of 'NOR' is 0 0 - 1 0 1 - 0 1 0 - 0 1 1 - 0 NOR is just opposite of OR as the name itself suggest NOR is the not of OR. Whole XOR is 1 for different outputs and 0 for same outputs.

1. By using transformer oils.
2. By nitrogen or sulfur hexaflouride gases.
3. By using flourinated hydrocarbons
4. Case is wide corrugated
5. Case is provided with radiators

CMRR stands for Common Mode Rejection Ratio, and it is a measure of how well the amplifier rejects signals that appear on both leads. The idea is that an amplifier should amplify the (Differential Mode) signal, but not any noise (Common Mode) that might appear on the lines, perhaps due to induction from nearby AC power sources. Since induction will show up on both leads, a high CMRR amplifier will have a greater signal to noise ratio overall

Because it is the top operating speed for that IC

In measuring high AC currents a current transformer with a suitable rating say 100/5 or 1000/5 are used. The secondary current is usually 5 amps when the fulload current of 100 or 1000 as the case may be is flowing in the mains. It is the univerasl practice to use CT's for measurement of AC currents. In DC circuits the transformer method will not work, so to increase the current that you can measure you can allow a known amount of current to bypass the ammeter and recalibrate the ammeter. In other words, put a shunt in parallel with the ammeter.

contains only a heated electron-emitting cathode and an anode. Electrons can only flow in one direction through the device—from the cathode to the anode. Adding one or more control grids within the tube allows the current between the cathode and anode to be controlled by the voltage on the grids.[5]

discrete because the signal of an alarm is periodic.

If I am not wrong then you have asked about a transformer. And its a current transformer. By theory of voltage transformer we know that

Vs/Vp = Ns/Np

So for answering your question we need the value of number of turns in primary and secondary coil. But you can use this equation to find your answer if you have other values. By using ohmic law you can convert voltage to current.

Its 50-0.7=49.3V

Using this Formula :

PIV Rating = Vout - 0.7V

the three legs in a transistor are known as E B and C. They stand for Emitter, Base and collector.

Two of them are input and one is an output. so you have two going into the component and one that goes out.

hope this helps i am also doing an assignment on this and found this out.

It isn't.

If you print something on acid-free paper, it will be easily readable in 200 years.

A harddisk, on the other hand, rarely last longer than 5-10 years even under the best conditions. A CD or DVD may last 50 years, but no one knows for sure yet.

Even putting physical reliability aside, it is not at all obvious that the programs we use in a few hundred years will be able to read the data formats we use today.

Compare to punched cards: They were a primary digital storage medium as recently as 40-50 years ago, but you will be hard put to find a punched card reader for a computer bought today. And possibly even harder put to find software that knows what the data means, especially for binary data.

Digital technology has its big advantages in operating on data - whether summing or copying, the computer is much less likely to make errors than a human - and in searching. Finding anything specific among millions of printed pages can be a hopeless task, while searching the same volume of digital data is trivial.

Digital technology has several massive advantages, but storage reliability is not one of them.

The back to back connected zener diodes can be used as an AC regulator producing what is jokingly called a "poor man's square wave generator". Using this arrangement we can clip the waveform between a positive value of +8.2V and a negative value of -8.2V for a 7.5V zener diode. If we wanted to clip an output waveform between different minimum and maximum values for example, +8V and -6V, use would simply use two differently rated zener diodes.

http://www.electronics-tutorials.ws/diode/diode_7.html

Slope overload distorsion - is caused by use of step size delta which is too small to follow portions of waveform that has a steep slope.

Can be reduced by increasing the step size.

Granular noise - is caused by too large step size in signal parts with small slope. It can be reduced by decreasing the step size.

Electronsflow from areas of lower to higher voltage, while Current flow from areas higher to lower voltage.

4

In an underground cable, the distortion in the transmission of carrier frequency can be eliminated using inductive loading. This distortion causes a delay which will result into a variance of frequencies.Ê

a schematic circuit is a diagram that show you how a particular circuit works

Its cheaper, smaller in size, and lighter weight than transformer coupling in most cases, while still providing DC isolation between stages. Direct coupling, another alternative, cannot provide DC isolation and therefor tends to make the design of bias circuits more difficult.

emitter follower is a type of negative feedback ,

As far as I know, radar was invented by a Hungarian scientist named Zoltan Bay. That radar was first used in World War II by the British troops.