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Crystal oscillators are electronic circuits that utilize the mechanical resonance of a vibrating crystal, typically made from piezoelectric material, to generate an electric signal with a precise frequency. This frequency is often used in quartz wristwatches to keep time, in digital integrated circuits to provide a stable clock signal, and to stabilize frequencies for radio transmitters and receivers.
The primary reason crystal oscillators are so widely used is their ability to provide highly stable and accurate frequency signals. They remain unaffected by minor temperature shifts and other environmental changes, making them perfect for various applications, including clocks, computers, telecommunication devices, and GPS systems.
A crystal oscillator operates based on a property known as the Piezo-electric effect. When voltage is applied to the crystal, it vibrates at a unique frequency, its resonant frequency. This vibration produces an electrical signal equivalent to the same frequency, offering a stable timing reference.
Quartz is the most commonly used material in crystal oscillators due to its piezoelectric properties and natural abundance. However, other materials like Rochelle salt or tourmaline can also be utilized.
Crystal oscillators find uses across various sectors. They provide a stable clock signal in digital integrated circuits, aid in celestial navigation and space tracking, and feature in measuring instruments, among other uses. You can find them on wristwatches, computers, and smartphones.
In a crystal oscillator, load capacitance (CL) represents the capacitance seen by a crystal or oscillator in its operating circuit. This parameter is crucial as it affects the crystal&#;s resonant frequency. A frequency shift can occur if the circuit&#;s load capacitance doesn&#;t align with the crystal&#;s specified load capacitance. Hence, ensuring that the total capacitance seen by the crystal matches the specified load capacitance when designing a circuit with a crystal oscillator is vital.
When choosing between a crystal and an oscillator, design considerations often include size, cost, performance, and power consumption. Crystals are typically smaller, more affordable, and consume less power than oscillators, but they need additional external circuitry to operate and might offer different performance stability levels than oscillators.
A crystal oscillator functions on the principle of inverse piezoelectric effect. When an alternating voltage is applied to a quartz crystal, it vibrates at its natural resonant frequency. This vibration generates an electrical signal with a precise frequency, which can synchronize operations in electronic devices.
When choosing a crystal oscillator, several factors should be considered, including operating frequency, frequency stability, size, power consumption, temperature range, and cost. The specific requirements of your application will dictate which factors are most important.
Crystal oscillators offer numerous advantages:
Established in , Harmony Electronics Corp (H.ELE.) has been manufacturing quartz crystal frequency electronic components for various applications, including crystals for cars, consumers, and industries. Our collaboration with Japan&#;s Daishinku Corp (KDS) has bolstered our research capabilities. Through our production sites in Taiwan, Thailand, and China, we supply crystal oscillator and resonator products with wide operating temperature ranges and focus on miniaturization trends. Our global sales team effectively communicates with customers worldwide. As a company, we are committed to corporate social responsibility and strive to provide value to our global society and customers. H.ELE. is a trusted global supplier of high-quality crystal frequency components.
For additional information, contact Harmony Electronics to discuss our crystal devices and how we can assist with your quartz frequency component needs. We encourage you to explore our website to learn more about our company, applications, and product offerings.
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Contact us to discuss your requirements of quartz crystal oscillator parameters. Our experienced sales team can help you identify the options that best suit your needs.