Electronics Engineering

Electrical resistance is opposition to electric current flow. There is a resistance to the flow of current. And a "balance" between applied voltage and resistance determines how much current will flow in a circuit. For a given applied voltage, if we increase the resistance, the current flow will decrease. For that same applied voltage, if we decrease the resistance, the current flow will increase. It's a simple relationship, and it is set down by the following expression: E = I x R We can also write it as I = E / R and R = E / I Voltage (in volts) is E, current (in amps) is I, and resistance (in ohms) is R. In the first expression, voltage is equal to current times resistance. For a constant voltage, any increase in resistance will cause a decrease in current flow. And any decrease in resistance will cause in increase in current flow. Just as cited earlier.

In general, speakers have two connections, and it is important to connect them the "same way" to the amplifier. (Amps also have pairs of output terminals.) We usually designate the terminals of the speaker as positive and negative. (Outputs of amps are usually designated the same way.) It is important to connecteach positive speaker terminal to the positive output of the amp for a given channel, and each negative speaker terminal to the negative output of the amp for a given channel. This way the speakers will be connected in phase. It is possible to reverse all of the connections and not have problems, but it is critical that speakers be connected in phase.

Speakers do not become out of phase or change phase. When they are constructed, their operation is fixed and will not vary during their lifetime. A given polarity of a wave, either positive- or negative-going, will always cause the speaker to move in the same given direction.

A combinational circuit's output depends only on its current inputs. This means, it has a truth table. A sequential circuit's output depends on its previous inputs. This means, it's output will depend on which state it is.

The magnitude of the voltage induced in a conductor moving through a stationary magnetic field depends on the length and the speed of the conductor.

Pretty much all of them. It's almost impossible to be completely impartial.

By Kirchoff's current law, a series circuit has the same current everywhere.

If the laser is in Hollywood it is possible, anywhere else in the world? no, impossible

The application of engineering knowledge to the development of medical products. The engineering disciplines involved range from the traditional engineering fields to software and genetic engineering. The field is broken up into a number of specialty areas as varied as the biological and engineering fields from which they spring.

rms. dat means Vp-p will be 325V.

physical layer

Never heard of a 16 ohm hifi aplifier. All amplifiers have an output impedance of less than 0.1 ohm. We use always impedance matching with a low source impedance to the much higher load impedance.

Scroll down to related links and read "Amplifier, Loudspeaker, and Ohms".

You reduce voltage in a DC circuit with a resistor. If the power demands are high, however, you may need a switching voltage regulator.

MOTHERBOARD MOTHERBOARD

Voltage = resistance X current abbreviated,
V = C * R


If you halve the voltage of the current, then the other side of the equation must also be halved; therefore, you get:


(1/2)V=(1/2)(C*R)


which is the same as:


(1/2)V=(1/2)(C)(R)


which means that either the current or the resistance must be halved as well, and because the resistance stays the same, then the current is halved.

A transformer makes and collapses a magnetic Field inside 60 times a second for home power in North America, 50 times a second in Europe.

The building and collapsing of a magnetic field "Induces" a voltage in another transformer winding.

DC current only creates a stable magnetic field and this will not create or induce voltage in the other winding.

Normally covered in grade 5 science where I live.

A circuit board It is a board containing devices passive and/or active that can be installed on a system to make it whole. Usualy refered a PCB OR PRINTED CIRCUIT BOARD.
its a board of circuits

In order to fabricate the p type and n type semiconductors..... we are doing the doping process.

No, we don not consider the barrier voltage of a diode to be able to act as a voltage source. The barrier voltage arises during construction of the p-n junction, and it results from charge separation. Separating charges results in voltage, but this difference of potential cannot be tapped as a voltage source because it cannot supply current the way we understand conventional voltage sources are able do.

i dont know

1001+1001

- Constructing a BCD-to-excess-3-code converter with a 4-bitt adder we know that the excess-3 code digit is obtained by adding three to the corresponding BCD digit. To change the circuit to an excess-3-to-BCD-code converter we feed BCD-code to the 4-bit adder as the first operand. Then feed constant 3 as the second operand. The output is the corresponding excess-3 code. To make it a BCD to excess-3 converter, we feed the 2's complement of 3 as the second operand. - Constructing a BCD-to-excess-3-code converter with a 4-bitt adder we know that the excess-3 code digit is obtained by adding three to the corresponding BCD digit. To change the circuit to an excess-3-to-BCD-code converter we feed BCD-code to the 4-bit adder as the first operand. Then feed constant 3 as the second operand. The output is the corresponding excess-3 code. To make it a BCD to excess-3 converter, we feed the 2's complement of 3 as the second operand.

1. Provides a high data rate.

2. cost of purchsing towers for transmission is pretty low.

3. small antennas are required.

4. No cables needed

5. Multiple channels available

6. Wide bandwidth

Every line has an upper limit and a lower limit on the frequency of signals it can carry. This limited range is called the bandwidth. The signals ranging within the upper limit & lower limit are called bandwidth signals.

It is a routine in a micro controllers program where the program jumps to after receiving a interrupt on the micro's interrupt pin. Because most micro's can only run one programme at a time, one need a way for the micro to stop doing what it's busy with, to service an outside peripheral that need urgent attention. For instance the micro is running a flashing LED, a push button that one want to use to stop the flashing and start to flash another LED is connected to the interrupt pin of the micro then the program save what it was busy with on a stag and immediately start the interrupt routine.

It can be used any where and it is preferred over PNP transistor because mobility of electron is much greater than hole.
Some applications of NPN transistors
Switching
amplification(audio amplifiers)
In manufacturing of several ICs(including 741,and TTL(74 series)).