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Fast Facts About Crystal Oscillators

Before you get to use crystal oscillators, you have to first know what their functions are. One of the things that you need to know about them is that they are one type of electronic circuit that is capable of producing electrical oscillations as determined by specific frequencies. The frequency that is designed in the process can be determined by what physical characteristics quartz has and other crystals that is found in the circuit feedback loop.

A lot of purposes can be drawn from the use of these crystal oscillators. For both communication and electronic systems, you can use these circuits. Basically, any systems where their function depends greatly on the accuracy of coordination and time measurement will be making the most of this particular type of circuit. They are often used in the provision of stability in generators that utilize time frequency. These generators help in the provision of pilot and carrier signals for use in navigation and electronic communication systems. The clock signals that will be used in any data processing equipment can also benefit from these crystal oscillators. They can also provide references signals that are used for specialized systems. The purpose of these crystal oscillators is what determines how stable and accurate their output frequency is. For simple microprocessor clocks, the frequency can start at 1000 PPM. For systems that require frequency control that is very much precise, about less than 5 PPM frequency is required.

When you look at crystal oscillators, you will see that they come with both an amplifier as well as a feedback network. This feedback network which it contains takes charge in selecting what output of the amplifier must be returned back to its input. There are two key factors that affect how oscillator circuits work. The first one is where the gain loop should be having losses around the oscillator loop that is greater or can be equal to the unity. The second key factor involves the phase shift of the loop being equal to 360 to 0 degrees. The angle shifts of the loop phase are the ones that determine how much frequency is needed for the crystal oscillator to work. With just a small change in the angle that the net loop phase has, you can expect the output frequency of the oscillator circuit to be changed. If you want to make sure that your net phase shifts are minimized, you must make sure that in your feedback loop, you will have a quartz crystal inside.

The use of crystals in these crystal oscillators has become very much beneficial in actual applications include excellent processing ability and high frequency stability and stable temperature characteristics. In addition, crystal oscillators are able to achieve a high degree of frequency stability as well as accuracy that you seldom see in other electronic circuits.

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