Electronics

Leaving a receptacle energized will not consume power, some things left plugged in while not in use will consume power.

Plasma is a state of matter in the same way that solids, liquids and gases are also states of matter. Plasma is found in fluorescent light bulbs and is used to generate images in a plasma television. So, a television has the same kind of plasma as a light bulb but applied in different ways.

Different methods for different circuits. In a simple RC filter with a series R and shunt C, the time-constant T is equal to RC. The cutoff frequency is given by 1/(2.pi.T).

So with 1 k-ohm and 0.1 uF the time-constant is 1000 x 1E-7 or 100 microseconds, so the cutoff frequency is 10,000/2pi which is 1592 Hz.

Elijah McCoy invented the automatic oil cup so you can pour oil onto moving parts of a automotive. Elijah Mccoy also invented the Automatic Engine Lubricator,Lawn Sprinkler, and Folding Iron Board.

The strobe pin on the LM311 is used to disable the output, so that multiple 311's can be ganged together, with only one being turned on at a time. It is also used to adjust the balance of the device.

While Voltage and Resistance typically remain constant in incandescent lamps: P (Power in Watts) = I (Current in Amperes) times E (Electrostatic energy in Volts [AC and DC]).

P=I*E - when P (Watts) goes up so does I (Amps).

Counter is a digital circuit which is able to count from a specific number to another specific number (according to the requirement). Depending upon the counting style the counters can be divided into two.

i) UP counter- which increment one by one (eg. 0,1,,2,3,4,5............15) for a 4 bit counter

ii) Down counter- which decrements one by one (eg. 15,14,13,12,11,10,9,8................0) for a 4 bit counter.

A simple apllication of a counter is a diigital clock, having 3 counters. One for counting the seconds, another for counting the minute and the last one for counting the hour.

A silicon chip is a structure created by people using machines. The structure consists of a base, made of silicon with a small amount of other elements added, so this part is a mixture. The chip also has wiring and transistors printed on it, thus making the entire chip a structure rather than a mixture or pure substance.

You can reduce the voltage fluctuations by first determining what is causing them, then counteracting this cause. In small circuit designs with multiple switching amplifier and ICs, the power or ground lines may become noisy due to this switching. Placing capacitors at the ICs power and ground can reduce this to manageable levels in most cases. Sometimes it can become necessary to isolate specific circuit's power and ground from the system using small inductors as well. If you are designing a power supply, zener diodes, and isolated power outputs (at the same or different voltages) can be used.

R=V/i

That is 1000 ohm.

The higher voltage source forces current backwards into the lower voltage source, which can damage it or even cause it to explode.

You use a half-wave rectifier where the system design does not require a full-wave approach.

Half wave rectifier output is used for running ac motors.

to produce sustained oscillations without any ac input.it is nothing but an amplifier with positive feedback and without input.it just converts the noise in the circuit and amplifies it to produce oscillations.

Of or pertaining to an electron or electrons.

CRT is a mature technology, less expensive, higher contrast, and still produces brighter pictures than a flat-panel display of the same display area. These advantages are slowly being eroded with better flat-panel technology. The cons are more than offsetting its pros. Since CRT uses accelerated electrons and a phosphor screen, it has a little more harmful radiation (if not properly shielded), it uses more energy and generates more heat, and at the end of its life, produces more hazardous materials, not to mention that it occupies a larger footprint and weighs more than a flat-panel display.

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Gunn diodes are used in GUNN oscillator over high frequency application. its work on the transfer electron effect TET and the scientist J.B Gunn observe it so the phenomenon is named by gunn effect. the diode are made from GaAs material.because silicon is not suitable low forbidden energy gap 1.21eV only.

HTML stands for Hyper Text Markup Language. It is used to code (program) the basic elements of the web and webpages. Basically, it is a way to set the basic blocks for other languages (like Javascript and CSS) to manipulate. HTML stands for Hyper Text Markup Language. It is used to code (program) the basic elements of the web and webpages. Basically, it is a way to set the basic blocks for other languages (like Javascript and CSS) to manipulate.

A volt meter is used to measure volts.

So what are volts???

Volts are what a volt meter measures.

Imagine water being pushed through a pipe. If the water in the pipe is falling from a container at a higher place, it goes through the pipe at a higher pressure... sort of like volts.

A larger pipe allows more water through, sort of like amps.

although the AC signal is rectified the output which we get is the pulsating DC which is not desired because many appliances wok on plain DC voltage . The pulsating DC can be viewed as AC + DC component of the signal

ripple factor of a rectified circuit is the ratio of AC component of signal to the DC component of the same rectified output signal. higher the ripple factor says that the signal is not smooth so lesser is its application.

the components used to smooth these type of signals or to remove the 'ripple voltage' as called filters

The quoted value is usually RMS value, i.e it is lesser than the peak value of the voltage, therefore the peak value is sqrt(2) times the quoted value. (it is a sine wave)

Advantage

1. Different waveform upto mhz freq. Can be generated

2. it can be used to generate square, sine, triangular and sawtooth waveforms

3. calibration is internal.

Disadvantage

They are usually not suitable for applications that need low distortion or stable frequency signals.

Electrical and Electronics engineering

Series resonant circuits have their lowest impedance at the resonant frequency. Parallel resonant circuits have their highest impedance at the resonant frequency. This characteristic is exploited in the design of filters, oscillators and other circuits.

A resistor reduces the flow of current between two terminals and thus reduces voltage. this is achieved through electrical resistance. All electrical conductors are resisters, some more resistant than others. The less resistance offered by a conductor, the easier it is for electricity to flow, thus the higher the current. Thus resisters allow circuit designers to control the flow of electricity.

A register is a small unit of storage used by a digital processor. Computers typically have a relatively large array of working memory, however all the actual processing is done via a small set of registers. Registers work in much the same way as main memory, typically using a capacitor and transistor pair to denote each bit, however registers are significantly faster. Some registers are used for housekeeping purposes such as to keep track of the next instruction and for marking the top of the program stack, while other are used to provide input and output for the current instruction. In order for an instruction to process a value that value must first be moved to a register, typically one of the accumulator registers. If the instruction requires another operand, it must be moved to another register, typically a user register. After processing, the accumulator's value is moved back to main memory, either by the instruction itself or by a subsequent instruction.

I think it is to determine how powerful you have to make your power supply to run the current demand load continously with a margin for error on the plus side. A 12 volt car battery has a low load resistance and needs some heafty components in a battery charger. A charger (or supply) for a 12 volt boom box with a high load resistance may be the size of a small paper cup. They both supply 12-15 volts but the load resistance is very much different E=IR I=E/r R=E/i