7B-19.200MAAJ-T Crystals, Oscillators, Resonators

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Crystals

Crystals are solid materials which have a characteristic arrangement of ions, atoms or molecules. Their structure is based on a three-dimensional lattice arrangement of repetitive unit cells which are secured together via strong covalent or ionic bonds. Crystals can be either natural or artificial, inorganic or organic.

The 7B-19.200MAAJ-T crystal is a quartz miniature type crystal unit composed of a quartz oscillator and a ceramic base combined with an electromechanical trimming capacitor and platinum resistor. The crystal is frequency calibrated across temperature and time and provides high frequency stability, excellent quartz performance and low current consumption for a wide range of applications.

7B-19.200MAAJ-T Application Fields

The 7B-19.200MAAJ-T crystal can be used in variety of electronic applications, including frequency control, GPS navigation, weather stations, meters and watch frequencies. It is commonly used in radio and TV receivers, low energy signal control systems, Ultra-Low Power (ULP) battery powered systems and Pulse Mode Digital Apparatus Control Technique (P-MATS) systems.

7B-19.200MAAJ-T Working Principle

The 7B-19.200MAAJ-T crystal oscillator works on a harmonic mode and consists of a quartz crystal enclosed in a resonant cavity, the crystal is given an oscillating electric current and the same current is monitored by the cavity. When the current reaches a certain length, it is able to produces voltage waves which produce a frequency that is amplified by a receiver.

The crystal oscillator also produces a sine waveform and the frequency of the waveform is determined by the structure and material of the crystal. A quartz crystal is usually selected because it displays high stability and accuracy. The smaller the crystal and the more uniform the cell structure, the more accurate the oscillator performance.

A crystal filter is designed to filter out specific frequency variations from a wide range of frequencies. It uses a crystal unit to generate a frequency, filters the desired frequency and then amplifies the resulting signal. The filter-amplifier combination is then used to detect signals and amplify them for further processing.

Crystals are also used for power supply conditioning applications in order to reduce electrical noise and to stabilize voltage. In this application, the crystal is connected to the AC mains to generate a clean, low-noise, sine waveform. This helps to reduce power supply ripple and to ensure a constant voltage and frequency.

In addition, crystals are widely used in oscillator circuits in which they are used to provide an oscillation signal. A crystal-controlled oscillator works by generating an AC voltage and the frequency of the voltage is determined by the selectivity of the crystal and the associated circuit. When the crystal is used in a circuit, it acts as an impedance that is tuned to a specific resonant frequency and generates a sine wave of energy.

Crystals are also used in timers, counters and frequency divider circuits. They can be used to adjust the frequency of digital circuits, in order to create specific timing or count frequency signals or for the division of higher frequency signals into lower frequency signals. The timing of an oscillator circuit can be accurately controlled by a crystal.

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