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Influence oscillating circuit three important indicators
There are three important indexes that affect the oscillation circuit: frequency error, negative impedance and excitation level
The relationship and difference of HC-49S HC-49U HC-49SMD in quartz crystal package
First of all, HC-49S, HC-49U, HC-49SMD are the packaging category of quartz crystal, passive crystal series, is now a few products that are widely used in quartz crystal, because of its low cost, precision stability and other in line with civilian electronic equipment, so it is liked by the factory. The piezoelectric properties of the crystal (silica) chip material can convert electrical and mechanical energy into each other to produce a stable frequency.
The difference between metal and glass packaging of quartz crystal
We all know that the chip type of quartz crystal packaging cap materials are divided into metal materials and GLASS materials (also known as ceramic packaging), referred to as SEAM series and glass series.
Crystal oscillator knowledge
In the electronic circuit, if the IC is compared to the brain, then the crystal is the heart. Oscillators with high precision and high stability are widely used in various types of oscillating circuits such as color TVS, computers, remote controls, and communication systems for frequency generators, clock signals for data processing equipment and reference signals for specific systems.
The difference between crystal resonators and crystal oscillators
The quartz wafer, plated with electrodes, is mounted on a stand, and the shell is added to make a quartz crystal resonator (which is what we see with two legs).
