Electronics Engineering

The answer to this question depends on the application. Generally no - manufacturers of devices design the components precisely, and if they've used a 35uf cap, they've probably done it for a reason. In an audio application the change of a capacitor value will give you a different tonal quality compared to the 35uF cap, though this isn't always a bad thing, though I wouldn't recommend changing it unless you're sure of the effect on the signal. In a power supply application, the capacitors are used to limit something known as ripple current. In this application the higher the capacitor value the lower the ripple current, which is something that is usually a good thing. If you want a more detailed answer i'd need to know more about the circuit you are working on.

An LED is a Light Emitting Diode. It is a semiconductor device designed to produce a certain type, wavelength, etc. of light.

As opposed to an LCD which is a Liquid Crystal Display, does not emit light of any real intensity, although excitation methods have been developed for use in TV's, cellphones, etc. More common now than LED's. The major difference is that LED's have to have power all the time to emit. LCD's just need power to change. So, they are more energy efficient.

a conductor which doped interncily i.e doped externaly is semiconductor

m=1/1-(v/vbd)n

m=multipulfactors

v=applied revese voltage

vbd=break down reverse voltage

n= emperical constant

n=4 for n-type si

n=2 forp-type si

An Analog Signal is a continuous signal, just like an electric current that flows through the copper cables when your electrical appliances are turned on. This continuous signal represents physical measurements. An example of this would be with an analog audio signal, the voltage amount of the signal changes continuously with the change in sound waves. Analog Signals are normally represented as electrical signals, but there is also Classical Mechanics, Pneumatics, and Hydraulics technique's that can be used in analog signals.

there is difference between doping levels.In normal PN junction diode we add 1 impurity for 108 atoms where as in tunnel diode we add 1 impurity for 103 atoms.there is a probability that electrons may penetrate through barrier.So will not disappear

in tunnel diode we get maximum current before barrier disappear where as we get maximum current after break down(there is no barrier)

this effect lies within a certain voltage limit of 0.4V.

When we consider the energy band structure in case of PN junction diode the fermi level lies inside the forbidden energy gap.In case of tunnel diode,the fermi level lies outside the forbidden energy band.

In tunnel diode, there is a topic about negative resistance region where as we cannot discuss it in PN junction diode.

ur friend,

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No. It means it has a resistance of 2,200,000 Ohms. Plus or minus the tolerance.

Fairly certain Beryllium Oxide is an extrinsic semiconductor with band gap 10.6 eV.

Otherwise the answer is Boron Nitride (6.36 eV)

Both alternating current (AC) and direct current (DC) describe the nature of the current in terms of its direction. DC describes when the flow of electric charge goes in a constant direction whereas AC describes when the flow of electric charge constantly reverses; in other words, the electrodes of the power source constantly switch between positive and negative.

Glass has a higher conductivity than thin plastic but,it is still lower than metal so metal may be a better conductor

Not similar at all. They are opposites.

A large enough body from space (comet, asteroid, meteor) that did not break up when coming through the Earth's atmosphere; a large sun flare or coronal blast; and a nuclear weapon detonation all have the ability to destroy entire cities and impair electronic communication systems.

If emitter-base is reverse biased then there will be no amplification effect on collector-emitter. If collector-base is forward biased, it will act like a diode, but without emitter-base current, that is meaningless.

A resistor will not change its value, unless the voltage exceeds the designed power capacity of the resistor. As the voltage increases, the current will increase, if the current gets too high it will cause the temperature of the resistor to increase, if the temperature exceeds the power rating of the resistor then the resistance WILL change. If it goes too High in temperature the resistor will open and current will no longer flow. A resistor is used to control current, and indirectly the .voltage depending on the application. Hope This helps. You must use Ohms Law to see the relationship.

The voltage gain of a common emitter transitor amplifier is (inverted) collector resistor divided by emitter resistor, unless this would exceed hfe or the transistor is operating in non-linear mode.

1. Fusion splices: Use an arc to melt and connect two fibers.

2. Connectorised splices: Use various types of connectors like BNC, ST, etc. These can either be straight- or diagonal-cut fibers.

3. Epoxy splices: Here fibers are joined with the help of refractive index matching glue and guiding sleeves or jackets.

Ohm's Law is a law of constant proportionality, and only applies to circuits in which the ratio of voltage to current is a constant over variations in applied voltage. Such circuits are called linear or ohmic circuits, and include most metals. However, in the case of metals such as tungsten, for electronic devices such as diodes, and for electrolytes, Ohm's Law does NOT apply, and we call such circuits 'non-linear' or 'non-ohmic'. For linear circuits, Ohm's Law simply states that the current flowing through that circuit is directly proportional to the voltage applied across its ends. The equation R = V/I is not, as many think, derived from Ohm's Law, but from the definition of the ohm.

Some of the topics for the similar on satellite communication related to IEEE are Intelligent mobile robot navigation technique using RFID Technology, Neural network based steam temperature control system, and GSM mobile phone based automobile security system. Some other topics are Smart card based Prepaid electricity system and Controlling a large data acquisition system using on industrial SCADA system.

If the garage door opener worked ok the last time you used it, maybe the battery inside the remote has just gone flat and needs to be replaced? <><><> Also, make sure the two are compatible. If either one is new, you have to make sure they code the same (dip switch or rolling) and that they transmit on the same frequency. If they are not compatible, think about replacing the remote as changing the opener is much harder. Just figure out the two things mentioned earlier for your opener and find a remote that matches those. For further advice see web sites such as the Related Link below.

The circuit voltage or the resistance of the individual bulb is needed to answer this question.

Divide the total power (400 W) by the supply voltage.

Atomic number of silicon is 14. So the electronic configuration is 2,8,4. So there are 4 electrons in outermost orbit. So to complete the octet, it has to get 4 electrons causing much electro negativity or to give 4 electrons causing much electro positivity. So it is reluctant to give electrons unless larger force is applied. So for the same reason carbon and germanium having 4 electrons in outer orbit are semiconductors of electricity. So when we add trivalent impurity (like aluminium ) to silicon it promote electrical conductivity and if we add pentavalent impurity ( like phosphorus) we get flow of electricity from trivalent plus silicon to pentavalent plus silicon. This is the basic principle used in electronics.

A cable tray is a rigid structure to support electric cables.

A Thermistor Is essentially a variable resistor. The resistance of the thermistor changes with temperature. They're often used to regulate heating elements - like those found in cookers.

Let us look at a black box with two external terminals and the black box is composed of only passive elements.

Conservation of charge means that what goes in one terminal has to exit the other terminal, or else electrical charge will accumulate or deplete inside the black box.

Current is just charge per unit time. Current going in one terminal has to exit without loss the other terminal.

Resistors are passive element. In this situation, we have two black boxes, each is composed of one resistor. What goes in = what comes out --> the current is the same in both resistors.

The voltage drop in a line can be decreased by