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Crystals

Crystals refer to a class of electrical components consisting of several types of electronic components, such as quartz oscillators, crystal oscillators, ceramic resonance components, etc. Crystals are widely used in the fields of electronics and communications.

FA-238 27.1200MB-C3 Application Field and Working Principle

FA-238 27.1200MB-C3 is a crystal oscillator produced by Chugai Electronics Co., Ltd. It is widely used in electronic equipment and communication equipment, such as mobile phones, broadcasting and television equipment and wireless communication. The basic working principle of this crystal oscillator is that when the quartz crystal is connected to the circuit, an LC (inductor-capacitor) resonance circuit is formed, and the resonance circuit brings about a special oscillation method. In this oscillation method, the reactive components of the oscillator are in a predictable oscillation state. Under certain conditions, the oscillation frequency generated by the oscillator is constant, and this oscillation frequency is called its natural frequency or resonant frequency.

In the circuit designed for the FA-238 27.1200MB-C3 crystal oscillator, the oscillation frequency can be changed by changing the capacitance or inductance of the external circuit. This oscillator can maintain a constant frequency over the whole temperature range of -40~+85℃ without considering the environmental changes. The stability of its frequency is achieved by using the ESR (Equivalent Series Resistance) adjustment, which is a special kind of PTC (Positive Temperature Coefficient) adjustment.

The FA-238 27.1200MB-C3 crystal oscillator is mainly composed of quartz crystal, load capacitance and ESR adjustment capacitor. The quartz crystal is a high-quality crystal rod, which has excellent piezoelectric effect and mechanical resonance effect. The load capacitance is composed of lead frame and fixed ceramic plate. The ESR adjustment capacitor is connected in parallel with the load capacitance to adjust the resonance frequency. The miniature package of FA-238 27.1200MB-C3 crystal oscillator can reduce volume and reduce cost, therefore, it is applied in more and more fields.

In summary, the FA-238 27.1200MB-C3 crystal oscillator is a crystal oscillator produced by Chugai Electronics Co., Ltd., which is mainly applied in electronic equipment and communication equipment, such as mobile phones, broadcasting and television equipment and wireless communication. Its working principle is based on the resonance circuit. The quartz crystal is connected to the circuit to form LC resonance circuit, and the resonant frequency generated by the circuit is predetermined. Additionally, the ESR adjustment is used to ensure the stability of frequency over the temperature range. The miniature package of this crystal oscillator can reduce the volume and cost, so it is widely used in many fields.

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