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>ceramic resonator is an electronic component
Electronic component

An electronic component is a basic Electronics element usually packaged in a discrete form with two or more connecting leads or metallic pads....
 that can produce oscillation
Oscillation

Oscillation is the repetitive variation, typically in time, of some measure about a central value or between two or more different states. Familiar examples include a swinging pendulum and Alternating current power....
 at a specific frequency
Frequency

Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency.The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency....
 when combined with other appropriate components. It consists of a voltage variable capacitor
Capacitor

A capacitor or condenser is a Passive component electronic component consisting of a pair of electrical conductor separated by a dielectric....
 that acts in some ways like a quartz crystal. Ceramic resonators are made of high-stability piezoelectric ceramics, generally lead zirconium titanate (PZT) which functions as a mechanical resonator. When voltage is applied, its piezoelectric "vibration behavior" causes an oscillating signal.






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Description

A ceramic resonator is an electronic component
Electronic component

An electronic component is a basic Electronics element usually packaged in a discrete form with two or more connecting leads or metallic pads....
 that can produce oscillation
Oscillation

Oscillation is the repetitive variation, typically in time, of some measure about a central value or between two or more different states. Familiar examples include a swinging pendulum and Alternating current power....
 at a specific frequency
Frequency

Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency.The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency....
 when combined with other appropriate components. It consists of a voltage variable capacitor
Capacitor

A capacitor or condenser is a Passive component electronic component consisting of a pair of electrical conductor separated by a dielectric....
 that acts in some ways like a quartz crystal. Ceramic resonators are made of high-stability piezoelectric ceramics, generally lead zirconium titanate (PZT) which functions as a mechanical resonator. When voltage is applied, its piezoelectric "vibration behavior" causes an oscillating signal. The thickness of the ceramic substrate determines the resonance frequency of the device.

Packages

A typical ceramic resonator package has either two or three connections
Lead (electronics)

In electronics, a lead has two meanings:*An electrical connection consisting of a length of wire or soldering pad that comes from a device. Leads are used for physical support, to transfer power, to probe circuit , and to transmit information....
. They come in both surface mount and through-hole varieties with a number of different footprints. The oscillation takes place across two of the pins (connections) and the third pin (if present) is connected to ground
Ground (electricity)

In electrical engineering, ground or earth may be the reference point in an electrical circuit from which other voltages are measured, or a common return path for electric current, or a direct physical connection to the Earth....
.

Applications

Ceramic Resonators can be seen in many circuit boards as they can be used as the source of the clock signal
Clock signal

In electronics and especially Synchronous logic digital circuits, a clock signal is a Signalling used to coordinate the actions of two or more Electronic circuit....
 for digital circuits such as microprocessors where the frequency accuracy is not of prime importance.

Ceramic resonators are also likely to be found in timing circuitry for a wide array of applications such as TVs, VCRs, automotive electronic devices, telephones, copiers, cameras, voice synthesizers, communication equipment, remote controls and toys. A ceramic resonator is often used in place of quartz crystals as a reference clock
Reference clock

A reference clock may refer to the following:*A master clock used as a timekeeping standard to regulate or compare the accuracy of other clocks...
 or signal generator
Signal generator

A signal generator, also known variously as a test signal generator, function generator, tone generator, arbitrary waveform generator, digital pattern generator or frequency generator is an Electronics device that generates repeating or non-repeating electronic signals ....
 in electronic circuitry because of its lower cost and smaller size. It is used on circuits where frequency specifications aren't highly critical (quartz has a 0.001% frequency tolerance, while PZT has a 0.5% tolerance).

See also

  • Oscillator
  • Electronic oscillator
    Electronic oscillator

    An electronic oscillator is an electronic circuit that produces a repetitive electronic signal, often a sine wave or a square wave.A low frequency oscillation is an electronic oscillator that generates an alternating current waveform at a frequency below ?200 Hz....
  • Crystal oscillator
    Crystal oscillator

    A crystal oscillator is an electronic circuit that uses the mechanical resonance of a vibrating crystal of Piezoelectricity#Materials to create an electrical signal with a very precise frequency....


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