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which is better AM or FM and why?

;kHz" represents a kilo Hertz, or 1000 oscillations per second. The AM Amplitude Modulation method involves the encoding of the original sound through modulating or changing the amplitude of the radio signal, which. These are electromagnetic waves with frequencies between 535 kHz and 1605 kHz where a "kHz" represents a kilo Hertz, or 1000 oscillations per second. The AM Amplitude Modulation method involves the encoding

Posted in Computers & Technology by Nawraj at 6:32 AM on June 25, 2008
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What are the different types of Crystal Oscillators?

ATCXO analog temperature controlled crystal oscillator.CDXO calibrated dual crystal oscillator .MCXO microcomputer-compensated crystal oscillator. OCVCXO oven-controlled voltage-controlled crystal oscillator .OCXO oven-controlled crystal oscillator. RbXO rubidium crystal oscillators RbXO, a crystal oscillator. can be a MCXO synchronized with a built-in rubidium standard which is run only occasionally

Posted in Computers & Technology by Neethali at 7:13 PM on December 12, 2007

Clock Cycle

well, In a computer, the clock cycle is the time between two adjacent pulses of the oscillator that sets the tempo of the computer processor.The number of these pulses per second is known, the clock cycle is the time between two adjacent pulses of the oscillator that sets the tempo of the computer processor.The number of these pulses per second is known as the clock speed, which is generally

Posted in Computers & Technology by Sid at 7:42 PM on May 29, 2008

What are cavity resonators?

behavior, that is, it naturally oscillates at some frequencies, called its resonance frequencies, with greater amplitude than at others. Although its usage has broadened, the term usually refers to a physical object that oscillates at specific frequencies because its dimensions are an integral multiple of the wavelength at those frequencies. The oscillations or waves in a resonator can be either

Posted in Electronics & Gadgets by Raksha at 11:12 PM on April 09, 2008

how an oscillator produces oscillations without source voltage?

One of the most commonly used oscillators is the pendulum of a clock. If you push on a pendulum to start it swinging, it will oscillate at some frequency -- it will swing back and forth a certain number of times per second. The length of the pendulum is the main thing that controls the frequency.For something to oscillate, energy needs to move back and forth between two forms. For example, in a

Posted in Computers & Technology by mukesh kumar at 6:13 PM on March 14, 2008

1.what is a smith chart used for?

, the remainder is still mathematically relevant, being used, for example, in oscillator design and stability analysis....The Smith Chart, invented by Phillip H. Smith 1905-1987,[1...][2...] is a graphical aid mathematically relevant, being used, for example, in oscillator design and stability analysis....well Nawraj, Using the Smith Chart,we will investigate some of the application and uses of theSmith Chart

Posted in Computers & Technology by Nawraj at 8:38 AM on June 26, 2008
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What are cavity resonators?

resonator is a device or system that exhibits resonance or resonant behavior, that is, it naturally oscillates at some frequencies, called its resonance frequencies, with greater amplitude than at others. Although its usage has broadened, the term usually refers to a physical object that oscillates at specific frequencies because its dimensions are an integral multiple of the wavelength at those

Posted in Electronics & Gadgets by ritu.dhawan at 12:59 AM on February 29, 2008

What is the "Coherent-on-receive" operation?

An improvement in a pulsed radar system providing coherent-on-receive signals utilizing digital techniques. The phase of the transmitted signal is compared to the phase of a stable local oscillator the phase relationship to the stable local oscillator and the amplitude of the return video signal. The digitized received signals are then digitally phase corrected to provide coherence using the stored

Posted in Computers & Accessories by Kaushal at 12:08 PM on October 24, 2008

Oscillator crystal are made of a. Siliconb. Germaniumc. Quartzd. None

A crystal oscillator is an electronic circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a very precise frequency/receivers....well, A crystal oscillator is an electronic circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a very precise frequency

Posted in Computers & Technology by Nawraj at 9:37 PM on June 26, 2008

What are electro magnetic radiations?

Electromagnetic EM radiation, also called light even though it is not always visible, is a self-propagating wave in space with electric and magnetic components. These components oscillate at right may be imparted when it interacts with matter.Electromagnetic waves can be imagined as a self-propagating transverse oscillating wave of electric and magnetic fields. This diagram shows a plane linearly

Posted in Electronics & Gadgets by ritu.dhawan at 12:57 AM on February 29, 2008

What is meant by the term Polarisation?

polarization setting to match the transponder orientation....PolarizationLight is a transverse wave, meaning that it oscillates in a direction perpendicular to the direction in which it is traveling. However, a wave is free to oscillate right and left or up and down or at any angle between the vertical and horizontal.Some kinds of crystals have a special property of polarizing light, meaning that they force

Posted in Electronics & Gadgets by rajiv at 8:46 PM on February 13, 2008

The wein bridge uses only - a Inductors b Capacitors c Resistors d Capacitors and Resistors.

.answers.com /topic/wien-bridge-oscillator...d Capacitors and Resistors....The wein bridge uses only in Capacitors and Resistors...well, Capacitors and ResistorsSource Site could give you more information :www.answers.com /topic/wien-bridge-oscillator...well, Capacitors and ResistorsSource Site could give you more information :www.answers.com /topic/wien-bridge-oscillator...he wein bridge uses only d Capacitors and Resistors

Posted in Computers & Technology by Nawraj at 10:27 PM on June 26, 2008

Define the term Low noise Block down converter?

satellite television carriers, typically 27 MHz wide, the accuracy of the frequency of the LNB local oscillator need only be in the order of 500 kHz, so low cost dielectric oscillators DRO may be used. For the reception of narrow bandwidth carriers or ones using advanced modulation techniques, such as 16-QAM, highly stable and low phase noise LNB local oscillators are required. These use an internal crystal

Posted in Computers & Technology by operator at 9:24 PM on November 12, 2007
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Define the term Low noise Block down converter?

Noise Amplifier and thence to the Mixer. At the Mixer all that has come through the band pass filter and amplifier stage is severely scrambled up by a powerful local oscillator signal to generate a wide range of distorted output signals. These include additions, subtractions and multiples of the wanted input signals and the local oscillator frequency. Amongst the mixer output products are the difference

Posted in Computers & Technology by low noise block down converter at 9:24 PM on November 12, 2007

Oscillator crystal are made of ?

Quartz

Posted in Exams, Education & References Anonymously at 6:29 PM on October 13, 2009
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