Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of crystal oscillator and parallel connection, which is applied in the direction of power oscillator, electrical components, etc., can solve the problems of damaged crystal oscillator, waveform distortion, and increase the signal amplitude after oscillation, so as to improve the power filter circuit and reduce the ripple voltage , Improve the effect of the DC component
Inactive Publication Date: 2014-09-24
CHENGDU SHIQI ELECTRONICS TECH
View PDF4 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Generally speaking, increasing the current means increasing the power consumption will shorten the start-up time, but at the same time it will increase the amplitude of the signal after the start-up
For the crystal oscillator circuit, if the output signal amplitude is too large, it will not only cause waveform distortion, but also generate too many harmonics, which will affect the performance of the output signal, and the excessive oscillation amplitude will seriously affect the life of the crystal, even Damaged crystal oscillator
In addition, in order to meet the fluctuation of crystal parameters and crystal oscillators of different frequencies, if a fixed current is used to drive the circuit, some crystal oscillators will not vibrate, and some crystal oscillators will have too large amplitude.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0011] The present invention will be further described below in conjunction with accompanying drawing:
[0012] Such as figure 1 As shown, it includes the positive input terminal a1 of the power supply, the negative output terminal a2 of the power supply, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, and the seventh resistor R7 , the eighth resistor R8, the ninth resistor R9, the tenth resistor R10, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the first inductor L1, the second inductor L2 , the third inductor L3, the first transistor VT1, the second transistor VT2 and the crystal oscillator SJT, the power input terminal a1 is connected to the first terminal of the eighth capacitor C8, and the second terminal of the eighth capacitor C8 is respectively connected to the set of the second transistor VT2 The elec...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a parallel-connection type crystal oscillator comprising a power supply positive electrode input end, a power supply negative electrode output end, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first inductor, a second inductor, a third inductor, a first transistor, a second transistor and a crystal oscillator. A power supply filter circuit can be improved, and control of output signal DC level can be realized so that DC level outputting a sinusoidal signal is constantly ensured to be biased at the preset value in the oscillation process of the crystal oscillator, system stability is guaranteed, ripple voltage is reduced and a DC component is enhanced.
Description
technical field [0001] The invention relates to a crystal oscillator, in particular to a parallel crystal oscillator. Background technique [0002] As a basic circuit module, the crystal oscillator circuit is used in the chip to generate a precise clock signal. This clock signal can not only be mixed with the signal after frequency conversion to realize modulation and demodulation; it can also be used as a reference clock for digital modules. Therefore, crystal oscillators exist in almost every chip and have extremely wide applications. [0003] It takes a relatively long time to start the crystal oscillator (low-frequency crystal oscillators usually need hundreds of milliseconds or even seconds). Generally speaking, increasing the current means increasing the power consumption will shorten the start-up time, but at the same time it will increase the amplitude of the signal after the start-up. For the crystal oscillator circuit, if the output signal amplitude is too large...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more