Electronics Engineering

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hey dear, in p-n junction p-type material has more positive charged called holes and n-side having e-in majority... when we apply negative biasing then negative terminal is connected to p terminal then holes are attracted by negative terminal and e's are attracted by positive terminals.....and minority carries are forced towards junction, then at junction electron and hole pair generation occurs. after this at junction charge is accumulated by attraction and junction is get wider by a small amount that is called as depletion layer...... now you can understand how depletion layer is created..

I am not exactly sure why it is said it can't be used, I myslef was searching for an answer when I came across this, I have a general idea about this, why I would like to share.

There can be two possible reasons.

1. The inductor produces a back-emf which opposes any change in current, but in the output of a HWR, the decrease in current and a no current state predominates a increase in current, so the inductor will naturally oppose a increase in current, which will mean a low dc voltage is obtained. [i.e. lower than the peak value]

2. The reactance of inductor increases with increase in frequency, the output frequency of a HWR is half that of a FWR. Thus filtering of higher harmonic waves is favoured.

Please check this out as well. http://books.google.co.in/books?id=FEdLZZgCe6YC&pg=PA85&dq=%22inductor+filter%22+HWR+OR+Half-Wave-Rectifier&lr=&as_brr=3&ei=NlgkSZ3VApHakASXq92BBQ#PPA84,M2

Aghosh Babu Plamkandathil

aghoshx(at)gmail.com

there are different network media,fiber,copper cable etc.to make communication in different media,need the media converter,for example,fiber media converter making the copper ethernet over fiber transmission,E1/ethernet converter making the ethernet over E1 conversion.

It is much easier to build a satellite transponder using different frequencies for the two directions (frequency division duplex, FDD). A single frequency (time division duplex, TDD) satellite link is possible, but then all earth terminal must be carefully synchronized. The satellite transponder and the earth terminals would be more expensive, the whole network would be more complex and less reliable. There is also a historical reason. Frequency bands were allocated decades ago and changing them would be very difficult. FDD and TDD terminals cannot coexist in the same geographical area.

voltage = current x resistance, so:

voltage = 200 x 0.001 = 0.2 volts

ANSWER: The peak to peak voltage can be found by multiplying 120 v AC x 2.82= 339.41

There are two basic types of full-wave rectifier. The older type consists of two rectifier diodes,(diodes). The two anodes are strapped together giving the +ve ouyput;the two cathodes are connected to opposite sides of the transformer secondary. This arrangement has the advantage of needing only two diodes, but the disadvantage of needing a centre-tapped secondary on the transformer which provides the -ve output. The newer type is a bridge rectifier. It consists of four diodes in a ring configuration. diode 1 has its anode connected to the +ve out and cathode to side a of transformer. diode 2 has its anode connected to the +ve out and cathode to side b of transformer. diode 3 has anode to side a and cathode to -ve out. diode 4 has anode to side b and cathode to -ve out. This arrangement has the advantage of not needing a centre tap on transformer secondary. The disadvantage of needing four diodes instead of two is moot nowadays because solid-state diodes are very low cost.

To convert light signals into digitally formatted electrical signals requires a device called a camera.

Also, an optical fiber digital converter in the course of fiber optics. For electrical power transmission, photovoltaic cells convert light into power.

resistance inparallel decrease in value proportionally two resistance can be calculated as R1XR2/SUM OF R1+R2. many values can be calculated as a fraction 1/r+1/r2+1/3 ....and take the total sum reciprocal

Yes and no. If you use a jumping unit, most have a setting that should match your cycle's battery voltage and limit current. You can jump one cycle's battery with another cycle's battery provided they are the same voltage and a rechargable-friendly (for example lead-acid) chemistry.

by using a suitable diagram, explain the one of the operation in microwave energy sources except Guinn Diode.

What will happen to the output ac signal if the dc level is insufficient? Sketch the effect on

the waveform.

highly necessary for iterllectual developnment.

In a microprocessor, field-effect transistors behave as electrically-controlled switches.

With the E-MOSFET, VGS has to be, 'greater than VGS(th) to get any drain current at all. Therefore, when E-MOSFETs are biased, self-bias, current-source bias, and zero bias cannot be used because these forms of bias depend on the depletion mode of operation. This leaves gate bias, voltage-divider bias, and source bias as the means for biasing E-MOSFETs.

Any application that lets you save and retrieve a file. My best guess is that you are looking for database as an answer.

RMS means root mean square of a sinusoidal wave form and the number that describe it is .741 of the peak average is ,639 of the peak

No, a television converter box will not work on a police radio scanner. There is currently no way to make this conversion. One cost-effective method of listening to digital police, fire and other communications without purchasing a digital police scanner is through the download and installation of a free smartphone application which receives digital transmissions. There are many available for both Android and iPhone.

There are many common moisture & water detectors readily available. They work like this: 2 conductors are placed close together but aren't touching. When water (which is electrically conductive, but not as conductive as most people think) contacts the conductors, the circuit is completed, and whatever is designed to happen next, happens. It could be an alarm, light, or a signal to an overall supervisory system such as in a factory basement, or tunnel.

Carthode-ray tube, in short term known as CRT's are used as picture tubes in television receivers and as visual display screens in radar-receiving equipment, computer installation and oscilloscopes.

It's called a 'variable resistor'. However, it can function as a 'rheostat' (to control current) when two terminals are connected, or as a 'potentiometer' (to control voltage) when three terminals are connected. The terms, 'rheostat' and 'potentiometer' do not describe the device itself, but how it is being used.

A circuited switch, which operates with sound of clapping hands or something similar; ie. the switch comes to 'on' position when clapped once or twice, and to 'off' position when again clapped once or twice (depends on circuit design)