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	Crystal oscillator - Wikipedia, the free encyclopedia
		Quartz timing crystals are manufactured for frequencies from a few tens of kilohertz to tens of megahertz.
		The rate of expansion and contraction of the quartz is the resonant frequency, and is determined by the cut and size of the crystal.
		The output frequency of a quartz oscillator is either the fundamental resonance or a multiple of the resonance, called an overtone frequency.
	en.wikipedia.org /wiki/Quartz_oscillator (1250 words)

	Quartz clock - Wikipedia, the free encyclopedia
		A quartz clock is a timepiece that uses an electronic oscillator which is made up by a quartz crystal to keep precise time.
		In modern quartz clocks, the resonator is tuning fork shaped, laser-trimmed or precision lapped to vibrate at 32,768 Hz.
		If a quartz wristwatch is "rated" by measuring it against an atomic clock's time broadcast, and worn on one's body to keep its temperature constant, the corrected time can easily be as accurate as 2 seconds per month, more than good enough to perform celestial navigation.
	en.wikipedia.org /wiki/Quartz_clock (734 words)

	Oscillator Technology
		Quartz crystal oscillator is a timing device consisting of quartz crystal resonator and an oscillation circuit to generate an output waveform at specified frequency.
		In a well-designed oscillator the frequency stability vs. temperature is determined primarily by the temperature characteristic of the crystal, and the oscillator manufacturer must select the crystal characteristics that conform to the oscillator circuit to insure that the intrinsic stability of the crystal is not degraded.
		A VCXO is a quartz crystal oscillator that includes a varactor diode and associated circuitry allowing the frequency to be changed by application of a voltage across that diode.
	www.4timing.com /techoscillator.htm (4739 words)

	Crystal oscillator -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-08)
		This property is known as (Electricity produced by mechanical pressure on certain crystals (notably quartz or Rochelle salt); alternatively, electrostatic stress produces a change in the linear dimensions of the crystal) piezoelectricity.
		However, quartz oscillators are also found inside test and measurement equipment, such as counters, (Click link for more info and facts about signal generator) signal generators, and (Electronic equipment that provides visual images of varying electrical quantities) oscilloscopes.
		A quartz oscillator is often used by (Click link for more info and facts about microcontroller) microcontrollers, which can be optimized for (Click link for more info and facts about system on chip) system on chips.
	www.absoluteastronomy.com /encyclopedia/c/cr/crystal_oscillator.htm (1075 words)

	Quartz watches
		Quartz is a crystalline mineral, silicon dioxide, that is found in abundance in the earth's crust and is the principal component of sand.
		The oscillator in a grandfather clock, for instance, is a pendulum.
		That's because the oscillator of a quartz watch, the little piece of quartz, is a much steadier oscillator than the balance wheel of a mechanical watch.
	www.bidtheewell.com /whatsnew/quartz.html (1622 words)

	here you get quartz oscillator
		QUARTZ OSCILLATOR Quartz oscillators are often referred to as quartz crystal oscillators.
		Here's how it works: I. The quartz oscillator receives an electrical charge from an integrated circuit, which gets its power from the watch...
		Categories of Quartz Crystal Oscillators Quartz crystal oscillator is a timing device consisting of quartz crystal resonator and an oscillation circuit to...
	www.khornes.de /quartz_oscillator.html (267 words)

	Introduction to Quartz Frequency Standards - Oscillator Circuit Types (Site not responding. Last check: 2007-10-08)
		Of the numerous oscillator circuit types, three of the more commonly discussed ones, the Pierce, the Colpitts, and the Clapp, consist of the same circuit except that the rf ground points are at different locations, as shown in Figure 13.
		The gate oscillator is a Pierce-type that uses a logic gate plus a resistor in place of the transistor in the Pierce oscillator.
		The choice of oscillator circuit type depends on factors such as the desired frequency stability, input voltage and power, output power and waveform, tunability, design complexity, cost, and the crystal unit's characteristics.
	www.oscilent.com /esupport/TechSupport/ReviewPapers/IntroQuartz/vigtypes.htm (433 words)

	Quartz Oscillator
		The output frequency of a quartz oscillator is either the fundamental resonance or a multiple of the resonance...
		High Q, BT-type, quartz oscillator High Q, BT-type, quartz oscillator The design of a BT-type quartz oscillator, operating on the third overtone and having a Q value of 2 × 106 at a frequency of 15 Mc/s, is described.
		Quartz crystal oscillator is a timing device consisting of quartz crystal resonator and an oscillation circuit...
	www.about-gemstones.com /quartz/Quartz-Oscillator.shtml (728 words)

	Agilent \| Timebase Oscillator Cal
		Agilent oscillators with a daily aging rate specification use ovens that sufficiently buffer the oscillator from the environment.
		In theory, a time system based upon a quartz oscillator or a rubidium standard of known drift rate can be kept within prescribed limits of error with infrequent adjustments through a systematic approach.
		Crystal oscillator frequency is also influenced by line voltage changes (often because the instrument's power dissipation increases, which causes the temperature inside of the instrument to rise).
	metrologyforum.tm.agilent.com /xtals.shtml (2347 words)

	minblep oscillator
		HOSONIC Crystal clock oscillator, Surface Mount Oscillator, Quartz...
		The oscillator's sensitivity to market movements can be reduced by adjusting the time period or by taking a moving...
		OSCILLATOR designs L-C, transmission line, SAW and bulk quartz-crystal oscillators using either a Bode open-loop or a negative resistance analysis.
	www.smartsmokers.de /minblep_oscillator.html (235 words)

	importer oscillator (Site not responding. Last check: 2007-10-08)
		Oscillator, Crystal Clock Oscillator, Crystal Units, Crystal Filter "Hartech Plastics Pvt Ltd" Hppl Is Pioneer In...
		A higher frequency clock oscillator is used in the mk2 and is synchronised with...
		In 1929 a clock driven by a quartz crystal oscillator was developed as a...
	importeroscillator.flogoscillator.com (848 words)

	Prometheus Bound [11/23/01] - TimeZone
		While often despised by connoisseurs, it is the quartz oscillator which is the basis of horology today, not the pendulums and balance wheels of the past.
		The heritage of piezoelectric quartz crystal timekeeping is a short one: First harnessed in 1928 by Bell Labs, clocks with quartz oscillators slowly displaced pendulum regulator clocks as the reference standard in the 1930s and 1940s.
		These quartz modules are the pinnacle of performance available today, and most handily surpass their claimed accuracy specifications, but they are all still 3rd generation and no more advanced that those of the late 1970s the Oysterquartz is our living witness.
	www.timezone.com /library/cjrml/cjrml0001 (2996 words)

	crystal oscillator design (Site not responding. Last check: 2007-10-08)
		Quartz Pro's unique crystal and oscillator design results in a clock with excellent retrace characteristics.
		A crystal oscillator, chip-form balun and RF antenna filter are also needed, along with a TriCome surface...
		Under proper conditions, quartz can be used to stabilize the frequency of an oscillator circuit.
	crystaloscillatordesign.flogoscillator.com (880 words)

	crystal clock oscillator (Site not responding. Last check: 2007-10-08)
		To avoid the buffer either emptying or overflowing, with resultant glitches in the sound, the master-clock crystal oscillator was locked to one of 256 rates closest to the long-term average clock...
		RXD Technologies, L.L.C. RXD's emphasis is in the microprocessor crystal and clock oscillator field including many 5x7 mm and smaller varieties.
		Oscillators Shine At High Frequencies May 2005 Reporting a revolutionary breakthrough in crystal-clock oscillator technology that improves reliability at higher frequencies, the S1614XP and S1613XP...
	crystalclockoscillator.flogoscillator.com (811 words)

	quartz crystal oscillator Search : Products, Services, Companys, Resources, News and Information about quartz crystal ...
		Quartz crystal oscillator is a timing device consisting of quartz...
		A VCXO is a quartz crystal oscillator that includes a varactor diode...
		...characteristics of the quartz crystal the crystal oscillator may be held to extreme.....characteristics of the quartz crystal the crystal oscillator may be held to extreme.....the...
	www.uwbtalk.com /archive/quartz-crystal-oscillator.html (326 words)

	Quartz, quartz rock, quartz oscillator (Site not responding. Last check: 2007-10-08)
		Quartz is a glass that exhibits unique properties which make it ideally suited for applications where high purity is required or where the use temperature...
		Quartz crystals are mined in the Ouachita Mountains and are used in...
		Optically, crystalline quartz is used extensively as a wave retardation medium, using the birefringent properties for use in quarter-wave plates and in...
	www.spasage.com /quartz.html (953 words)

	get: how a quartz oscillator clock works
		Quartz watches actually use quartz crystals to keep time.
		Therefore, a quartz crystal clock oscillator can be used to pass FCC regulatory EMI test requirements by reducing EMI peak...
		For example, a quartz watch uses a quartz oscillator to keep track of what time it is. An AM radio transmitter uses an oscillator to create the carrier...
	www.steinerarchiv.de /how_a_quartz_oscillator_clock_works.html (268 words)

	[No title]
		The oscillator has been developed for applications where it is critical to maintain comparable performance parameters of a Rubidium oscillator without the higher cost and inherent wear-out phenomena which may be a detriment to system design goals.
		Two parameters where the quartz oscillator does not yet match the performance of a Rubidium oscillator, however, are aging and warm-up.
		For applications where a low aging rate is essential, a primary frequency standard such as a Cesium, Loran C or GPS may be utilized to discipline the quartz oscillator and compensate for this characteristic.
	www.mti-milliren.com /docs/abstract.doc (829 words)

	Quartz Crystal Oscillator: Information on oscillator
		Measuring 4.0 x 6.5 x 2.0 mm, oscillator operates at any voltage from 1.5-6 V with temperature range of -40 to +85and#176;C. Frequency stability is +30/-150 ppm and frequency tolerance at 25and#186;C is +30/0 ppm.
		Information and Description A quartz clock is a timepiece that uses an electronic oscillator and a quartz crystal to keep precise time.
		This frequency is electronically divided down and used in a feedback control circuit ("servo-loop") to keep a quartz crystal oscillator locked to a frequency of 5 megahertz (MHz), which is the actual...
	quartzcrystaloscillator.fopsoscillator.com (1551 words)

	ultrasonic oscillator (Site not responding. Last check: 2007-10-08)
		The bat calls are picked up by an ultrasonic microphone and mixed with the output of a high frequency oscillator in such a way that the result is the sum and difference of the two frequencies.
		It was built to show that it is possible for a six legged machine to walk using a single oscillator.
		There is an on-board oscillator that significantly reduces the burden of the...
	ultrasonicoscillator.flogoscillator.com (840 words)

	quartz oscillator (Site not responding. Last check: 2007-10-08)
		Receive filter and transmit tones frequencies are synthesized from a quartz oscillator under microprocessor control, assuring high stability and 1.0 Hz resolution.
		This oscillation of a quartz crystal is called the Piezoelectric effect, and the quartz crystal and the electric circuits within a clock are generally referred to as a quartz oscillator.
		According to Louis Essen's laboratory notebook the first measurements of the caesium standard's frequency against the frequency of the NPL quartz oscillator standard, which was related to the length...
	quartzoscillator.flogoscillator.com (950 words)

	Quartz Resonator & Oscillator Tutorial (Site not responding. Last check: 2007-10-08)
		Ambient pressure change (as during an altitude change) can change a crystal oscillator's frequency if the pressure change produces a deformation of the crystal unit's or the oscillator's enclosure (thus changing stray capacitances and stresses).
		Vig and F. Walls, "Fundamental Limits on the Frequency Instabilities of Quartz Crystal Oscillators," Proc.
		Brendel, “Influence Of a Magnetic Field on Quartz Crystal Resonators,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol.
	www.ieee-uffc.org /freqcontrol/tutorials/vig/vig_tutorial1_files/slide0214.htm (641 words)

	low jitter oscillator (Site not responding. Last check: 2007-10-08)
		A custom-manufactured low-jitter crystal oscillator at its heart, Voyager's master clock actually stores the signal long enough to realign data, correcting raw data as it comes from the disc.
		The goal is to extend the low jitter oscillator design methodology in several ways: Higher Speed: 2.5 GHz oscillator design As stated earlier, investigation into 622MHz operation is a short term goal...
		it is necessary to lock a local oscillator to another frequency source, such as a clock recovery circuit.
	lowjitteroscillator.flogoscillator.com (989 words)

	voltage controlled crystal oscillator (Site not responding. Last check: 2007-10-08)
		Voltage Controlled Crystal Oscillator (VCXO) is a crystal oscillator whose frequency can be tuned by a control voltage on one of the oscillator package pins as designated.
		Voltage controlled crystal oscillator (VCXO) This is a crystal oscillator that allows you to tune its frequency using an external voltage control.
		VCXO Introduction A VCXO (Voltage Controlled Crystal Oscillator) is a crystal controlled oscillator where the frequency changes in direct proportion to the application of a control voltage.
	voltagecontrolledcrystaloscillator.flogoscillator.com (834 words)

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