What is the difference between crystal oscillator and Tao Zhen? What is the difference between a cry

The role of the crystal oscillator is to provide the basic clock signal to the circuit*. It is a vibrating device for integrated circuits, with different frequencies, which can make the circuit work within a stable frequency range. It is often used in conjunction with phase-locked loop circuitry to provide the clock frequency required by the system.

The frequency stability of the crystal oscillator is high, and the frequency determines the accuracy, which can provide accurate clock signals for the system. If necessary, different subsystems may require clock signals of different frequencies, which can be provided with different phase-locked loops connected to the same crystal oscillator. It is the pace benchmark, stable frequency, and selected frequency, and crystal oscillator can be used in almost all industrial, technology, automotive, digital, electronic and other fields.

TROQ crystal oscillator brand is the leading independent domestic brand of Jinhua Chuangjie Electronics, with more than 50 years of scientific research and technical experience, 2...

Crystal oscillator. The difference with Tao Zhen:

1. Volume: The crystal oscillator can't do a very low frequency because of the packaging volume, but Tao Zhen can, and the volume of Tao Zhen is larger;

2. Cost: Generally speaking, crystal oscillator is more expensive than Tao Zhen;

3. Accuracy and temperature stability: Quartz crystal oscillator has higher precision and better temperature stability than ceramic crystal oscillator.

Extension of knowledge points:

In terms of technical parameters, quartz resonators can replace ceramic resonators, but ceramic resonators may not necessarily replace quartz resonators, ceramic resonators are mostly in TV remote controls, toy products and other products that do not require high accuracy, and in consumer electronic products such as instrumentation and communication communications, quartz resonators are required where accuracy is required.

Hello! "Tao Zhen"Full name"Ceramic crystal oscillator".It is an important electronic component that provides a fixed oscillation frequency to a circuit.

It works using the principle of piezoelectric effect of ceramic crystals. Electrical energy and mechanical energy are periodically transformed during operation. This periodicity is very stable and provides an accuracy close to that of a crystal oscillator (quartz crystal oscillator).

Generally 4 trillion and 8 trillion are common.

"Crystal oscillator" has different use requirements and characteristics, and is generally divided into the following categories: ordinary crystal oscillator, temperature-compensated crystal oscillator, voltage-controlled crystal oscillator, temperature-controlled crystal oscillator, etc. The DC power supply supplied during testing and use should not have a ripple content sufficient to affect its accuracy, and the AC voltage should have no transient process.

The test instrument should have sufficient accuracy and reasonable wiring arrangement to minimize the impact of the test and peripheral circuits on the crystal oscillator index.

To put it simply, crystal oscillators include Tao Zhen!

The values of c0 and c1 are different, resulting in different frequency selection accuracy;

The Q value is not the same, resulting in a different equivalent impedance!

1. Volume: The crystal oscillator can't do a very low frequency because of the packaging volume, but Tao Zhen can, and the volume of Tao Zhen is larger;

2. Cost: Generally speaking, crystal oscillator is more expensive than Tao Zhen;

3: Performance: The crystal oscillator is more stable than the Tao vibration, and the service life is longer.

The difference between an oscillator and a crystal oscillator.

Crystal oscillator is an electrical component made by using the characteristics of quartz, the main role is to control the time pulse, to achieve the role of timing, the oscillator is a waveform amplification element, the two things are different in effect. Your external clock frequency does not necessarily mean that the working frequency of the single-chip microcomputer is 40, but just an additional clock signal to control the timing.

The difference between an oscillator and a crystal oscillator.

2. How does an oscillator generate alternating current.

DC > oscillation circuits > transformers (isolation, transformer) > AC output.

1. Use DC power supply to drive DC motor --- mechanical transmission to alternator to generate alternating current; This is one of the oldest methods, but it is still in use today, and is characterized by low cost and easy maintenance. It is still used in high-power conversion.

2. Use an oscillator (that is, the inverter on the current market); This is a relatively advanced method, with high cost, and is mostly used for low-power conversion;

3. The principle of mechanical oscillator converter is to make the DC current intermittent, and after passing through the transformer, it can output alternating current at the secondary stage of the transformer, which is a relatively old method and has basically been eliminated.

A quartz wafer, plated with electrodes, mounted on a bracket, and added to the housing, becomes a quartz crystal resonator (the thing you see with two legs). The quartz crystal resonator plus the oscillation, amplification or shaping circuits, packaged into a metal shell, becomes a quartz crystal oscillator, generally with four terminals (power terminal, ground, output, and a voltage control or floating terminal). Quartz crystal resonator is referred to as crystal, and quartz crystal oscillator is referred to as crystal oscillator.

The quartz crystal must be connected to the oscillation line to have a signal output, and the crystal oscillator itself has an oscillation circuit, so there is a power supply to have a signal output.

Crystal oscillator, i.e., crystal oscillator.

There are some electronic devices that require AC signals with a high frequency stability, while LC oscillators are less stable and prone to frequency drift (i.e., the frequency of the AC signal produced is prone to change). A highly stable signal is generated by the use of a special element in the oscillator, a quartz crystal, which is called a crystal oscillator.

1.Shapes, structures and pictorial symbols.

Cut a thin slice on the quartz crystal in a certain direction, polish and coat the two ends of the thin slice and coat it with a conductive silver layer, and then connect two electrodes from the silver layer and encapsulate it, so that the component is called a quartz crystal resonator, referred to as a quartz crystal.

2.Characteristic.

Quartz crystals have two resonant frequencies, namely fs and fp, with fp slightly larger than fs. When the frequency of the signal applied to the quartz crystal is different, it exhibits different characteristics.

When f=fs, the quartz crystal is resistive, which is equivalent to a resistance with a small resistance.

When fs when f fp, the quartz crystals are capacitive, which is equivalent to capacitance.

3.Circuit symbol: Crystal oscillator is one of the most commonly used electronic components in electronic circuits, generally represented by the letters "X", "G" or "Z" in Hz.

4.Composition: The crystal oscillator is mainly composed of crystals and peripheral components.

5.Working principle: The crystal oscillator has a piezoelectric effect, that is, the crystal will be deformed after the voltage is applied to the two poles of the wafer, and in turn, if the external force deforms the wafer, the metal sheet on the two poles will generate voltage.

If an appropriate alternating voltage is applied to the wafer, the wafer will resonate (the resonant frequency is related to the inclination angle of the quartz bevel, etc., and the frequency is constant). Crystal oscillators use a crystal that converts electrical and mechanical energy into each other, and can provide stable and accurate single-frequency oscillation when operating in a resonant state. Under normal operating conditions, the absolute accuracy of ordinary crystal frequency can reach 50 parts per million.

Taking advantage of this feature, the crystal oscillator can provide relatively stable pulses, which are widely used in the clock circuit of microchips. Most of the wafers are made of quartz semiconductor material, and the shell is encapsulated with metal.

Quartz crystal oscillator is a quartz crystal resonator made of quartz material, commonly known as crystal oscillator. It plays the role of generating frequency, has stable and good anti-interference performance, and is widely used in various electronic products.

Although quartz crystal oscillators have been used for decades, they have always occupied an important position in the field of electronics because of their high frequency stability. In particular, the rapid development of the information technology (IT) industry has made this crystal oscillator full of vitality. Quartz crystal oscillators are used as standard frequency sources or pulse signal sources in long-range communications, satellite communications, mobile systems, global positioning systems (GPS), navigation, remote control, aerospace, high-speed computers, precision measurement instruments and consumer civil electronic products, providing frequency references, which are irreplaceable by other types of oscillators.

Miniaturization, chip, low noise, high frequency precision, high stability and high frequency are the requirements of portable products represented by mobile and antenna pagers for quartz crystal oscillators. In fact, in the development of quartz crystal oscillators, there are also potential threats and challenges to circuits such as frequency generators. Only by continuously innovating in technology can such oscillators extend their life cycle and have an advantage over the competition.

Oscillation mode. Quartz crystals offer two resonance modes, a series resonance consisting of C1 and L1, and a parallel resonance consisting of C0, C1 and L1.

For typical MHz-class quartz crystals, the series resonance frequency is generally several kHz lower than the parallel resonance frequency. Quartz crystals with frequencies below 30 MHz usually operate at frequencies between series resonance frequencies and parallel resonance frequencies, and quartz crystals exhibit inductive impedance. This is because the capacitance on the external circuit will lower the oscillation frequency of the circuit.

When designing a quartz crystal oscillation circuit, the total stray capacitance and applied capacitance on the circuit should be the same as the load capacitance used by the crystal manufacturer, so that the oscillation frequency can accurately meet the manufacturer's specifications.

Quartz crystals with frequencies above 30 MHz (to 200 MHz) typically operate in series resonance mode with the lowest impedance, equivalent to RS. These crystals are usually labeled with a series resistance (<100 instead of a parallel load capacitance. In order to achieve a high oscillation frequency, the quartz crystal oscillates at one of its harmonic frequencies, which is an integer multiple of the fundamental frequency.

Only odd harmonics are used, such as 3x, 5x, and 7x harmonic crystals. To achieve the desired oscillation frequency, additional capacitors and inductors are added to the oscillation circuit to select the desired frequency.

It is also generally called an active crystal oscillator or crystal resonatorThe full name is quartz crystal oscillator, which is a high-precision and high-stability oscillator (a kind of electromechanical device), and the quartz crystal with little electrical loss is made by precision cutting and grinding and electrode plating and welding leads. With certain external circuits, a sine wave with stable frequency and peak value can be generated.

When the single-chip microcomputer is running, it needs a pulse signal as a trigger signal for its own execution of instructions, which can be simply imagined: the single-chip microcomputer receives a pulse and executes one or more instructions.

It refers to cutting a thin slice (referred to as a wafer) from a quartz crystal at a certain azimuth angle, and the quartz crystal resonator is referred to as a quartz crystal or crystal and crystal oscillator; The crystal element that adds an IC to the inside of the package to form an oscillation circuit is called a crystal oscillator. Its products are generally packaged in metal shells, but also in glass shells, ceramic or plastic packages.

Application 1A general-purpose crystal oscillator used in a variety of circuits to generate oscillation frequencies.

2.Quartz crystal resonators for clock pulses are widely used in digital circuits in conjunction with other components to generate standard pulse signals.

3.Quartz crystal resonator for microprocessor.

With a quartz crystal resonator.

5.Quartz crystal oscillator for clocks.

Crystal oscillator is a kind of frequency element, the material is quartz or crystal, and it is called crystal oscillator because of its unique oscillation function. It is divided into quartz crystal oscillator, ceramic crystal oscillator, SMD crystal oscillator, plug-in crystal oscillator, active crystal oscillator, passive crystal oscillator, and temperature-compensated crystal oscillator. The general crystal oscillator is to produce oscillations, and the crystal oscillator has different frequencies to make the circuit work within a stable frequency range.

Crystal oscillator is a kind of frequency element, the material is quartz or crystal, and it is called crystal oscillator because of its unique oscillation function. It is divided into quartz crystal oscillator, ceramic crystal oscillator, SMD crystal oscillator, plug-in crystal oscillator, active crystal oscillator and passive crystal oscillator, as well as temperature-compensated crystal oscillator. The general crystal oscillator is to produce oscillation, the crystal oscillator has different frequencies, which can make the circuit work within a stable frequency range, it is a starting device for integrated circuits, and the crystal oscillator is the pace benchmark, stable frequency, and frequency selection.

Crystal oscillator can be used in almost all industrial, technology, automotive, digital, electronic and other fields.