Electronics Engineering

studying about stable objects. i think

8255 is a programmable peripheral device, a chip used to control peripheral devices connected to/with in a computer in the 8086 based machines. It's a general purpose i/o controller, produced by Intel. More details: http://www.electronics.dit.ie/staff/tscarff/8255PPI/8255.htm http://www.wantronix.de/pdf/decision/8255pci.pdf

A wideband amplifier is an electronic circuit providing constant amplification with a ratio of its low corner frequency to its high corner frequency of more than an octave.

The widwband amplifier is complementary in concept to "audio amplifier" (20Hz-20KHz) and "video amplifier" (15KHz to 4.8MHZ).

The "opposite" concept is the narrow-band or tuned amplifier.

There's a new wideband amplifier technology called PowerBand from TriQuint Semiconductor.

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4017 IC is a counter, divider integrated circuit. It is a decade counter that has 10 different decode outputs and is commonly called a CMOS.

depending on the amount of the load of transformer as well as the power factor of it, there is a transformer specific voltage drop at its terminals, due to the internal impedances. The on-load tap changer can / will be used to compensate this voltage drop or rise.

these are essential for circuits which are current sensitive, it regulates the amount of current which serves as protection for circuits. it is commonly used in Laser diode applications.

Rectifiers are electrical parts, all electrical parts are rated for 3 things.

1) voltage

2) current

3) temperature

Exceed any of these things and the electrical part will fail.

It's not really necessary to have a girl friend,but it teaches you how to maintain your relationship later in life.

A resistor does not only decrease current in a circuit it can also reduce tension(voltage) if connected in series.

it is a capacitor created with a cmos transistor where the source, body and gate are tied together to ground and the drain is tied to the source voltage.

Limit effects (heat loss) caused by eddy currents

"Circular" means the variance of the real and imaginary parts are equal.

"White" refers to the fact that the power spectral density of the noise is flat across the whole frequency spectrum. This means that its autocorrelation is a Dirac-delta at t=0 (so its covariance matrix will show noise powers on the diagonal elements and zeros elsewhere).

"Gaussian" means the probability distribution of the amplitudes of the noise samples is Gaussian.

It just does what it do's

Thermocouple is one example.

A thermistor is thermoresistive.

in a CRO ,fast moving electrons coming from cathode tube strikes the screen .This is seen as a single dot,but for viewing a waveform it is required that the electrons should move both horizontally as well as vertically. For that purpose a horizontal deflection plate is provided in the cro. This deflection plate is supplied with voltages , so that the electrons passing through these plates get deflected horizontally.due to alternating voltages these electrons deflect right & left very quickly, that we humans fell it is a straight horizontal line due our perception. THE voltages is provided by sweep generator,which produce ramp voltages WHICH IS AMPLIFIED & PROVIDED TO HORIZONTAL DEFLECTION PLATES in a CRO ,fast moving electrons coming from cathode tube strikes the screen .This is seen as a single dot,but for viewing a waveform it is required that the electrons should move both horizontally as well as vertically. For that purpose a horizontal deflection plate is provided in the cro. This deflection plate is supplied with voltages , so that the electrons passing through these plates get deflected horizontally.due to alternating voltages these electrons deflect right & left very quickly, that we humans fell it is a straight horizontal line due our perception. THE voltages is provided by sweep generator,which produce ramp voltages WHICH IS AMPLIFIED & PROVIDED TO HORIZONTAL DEFLECTION PLATES

The advantages of wattmeter include adequate for low frequencies, easy to operate and better technology. There are different types of wattmeter and each has specific advantages.

Well VHF is more for long distance and has a longer wavelength. So, it would logically require more power. UHF is more line of sight and has good in building penetration and doesnt require the transmit power that VHF would require.

Capacitors are used to limit the frequencies sent to speaker units in multiple speaker applications.

As the frequency increases, so does the effective resistance of the capaitor. (known as reactance)

For instance, tweeters only work efficiently with high frequencies. Applying low frequencies to these devices is inefficient and could cause harm to the unit. Putting a capaitor in line with it will only allow high frequencies through. Using a combination of capacitors and coils, in parrallel to form filters, can make only desired frequencies pass to the correct driver unit. Each speaker can then work most effeciently with the desired frequency. This is a fine art, to make sure that the sound is pure and not coloured or distorted and has to also match the cabinet in which the drivers are mounted.

A monolithic IC is a type of "integrated circuit" electronic device (commonly referred to as a "chip") that contains active and passive devices (transistors, diodes, resistors, capacitors) that are made in and on the surface of a single piece of a single crystal semiconductor, such as a Silicon (Si) wafer. A process called "planar technology" must be used in the single block (monolith), and be interconnected to the insulating layer over the same body of the semiconductor to produce a solid integral monolithic-IC. If the devices are interconnected by bonding wires dangling above the chip, is not a monolithic-IC; it is a hybrid-IC. In monolithic-ICs, the devices (transistors, diodes, resistors and capacitors) are fabricated on the same single chip of a single Silicon crystal by PLANAR technology, and have ISOLATED p-n junctions, and have interconnections adherent to the insulator layers without shorting to the adjacent areas and each other.

Answer It is the about the same as a stunt gun or a protter that output a high voltage with very little current when used to rejuvenate a tube it is connected to the tubes cathode and the high voltage pulls remove the scale that is formed on the cathode over years and one can say that it open the way for the electrons to flow easer from the cathode to the anode, and yes it can be used for catching snakes but not to be tried if you don't know what you are doing, it can be lethal.

It is only a LED and a light sensitive transistor in one package. The light from the LED activates the transistor so there is optical communication between the input and output but no electrical contact. This provides exceptional electrical isolation between the two circuits involved.

An application that is most common is in a switched mode power supply, or a pulse width modulated power supply, if you prefer. These are exceptionally common in almost all contemporary AC adapters for TVs, monitors and other electronic devices.

THE MAIN ADVANTAGE OF THE UNIVERSAL LOGIC GATES IS THAT IT CAN BE USED TO MADE ANT KIND OF LOGIC GATE .......BY USING IT . NAND AND NOR ARE CALLED AS UNIVERSAL GATES ARE USED TO MAKE ANY GAATES AS OR ,AND, XNOR,NOT. logic gates are used in many everyday electronic devices such as tv's, computers and telephones.

Only 35 single-word instructions to learn All single-cycle instructions except for program branches, which are two-cycle Operating speed: DC - 20 MHz clock input DC - 200 ns instruction cycle Up to 8K x 14 words of Flash Program Memory Up to 368 x 8 bytes of Data Memory (RAM) vUp to 256 x 8 bytes of EEPROM Data Memory Pin out compatible to other 28-pin or 40/44-pin PIC16CXXX and PIC16FXXX micro controllers