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crystal Units are Electronic parts which can range widely in performance specifications. These specifications include resonance frequency, resonance mode, load cpacitance,series resistance, holder capacitance, motional iductance and capacitance, and drive level. Crystal Units are widely used in telefommunications, household, commercial and industrial electronic equipments.
Clock oscillator is a device that sonsist of a crystal and oscillation circuit providing an output waveform at a specified frequency. For it is widely used in circuit for clock generator made in called clock oscillator. Now you can select DIP14,DIP8,SMD7x 5 and 5 x 3.2 type. Supply voltage 1.8,2.5,3.3V and 5V. With high stability, low power consumption and easy application, it is widely used in telecommunication, computer and peripheral, house electronic equipment, spaceflight etc.
VCXO consist of a crystal and a network including transistor and varactor Diode. Its output frequency can be changed or modulated by direct applications of an external control voltage. For this characteristic it is widely used in ADSL, Cable Modem, cellulare base station and navigation etc.
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