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Crystal oscillation detection circuit and crystal oscillation detection device

A detection circuit and detection device technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of high cost, low cost, and low detection efficiency

Inactive Publication Date: 2013-09-18
OCEANKING DONGGUAN LIGHTING TECH +2
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Problems solved by technology

[0003] Based on this, in view of the problems of high cost and low detection efficiency of using a multimeter to detect crystal oscillator components, it is necessary to provide a crystal oscillator detection circuit with low cost and high detection efficiency

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  • Crystal oscillation detection circuit and crystal oscillation detection device
  • Crystal oscillation detection circuit and crystal oscillation detection device
  • Crystal oscillation detection circuit and crystal oscillation detection device

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Embodiment Construction

[0019] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0020] Crystal oscillators are widely used in the electronics field. Whether the crystal oscillator starts to oscillate in the circuit is directly related to the entire circuit. Therefore, it is necessary to test the crystal oscillator before the crystal oscillator is connected to the circuit or before the circuit test to test whether the crystal oscillator can start-up.

[0021] Such as figure 1 As shown, the crystal oscillator detection circuit provided in this embodiment includes an oscillation generation unit 100, a detection unit 200, and an indication unit 300.

[0022] Such as figure 2 As...

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Abstract

A crystal oscillator detection circuit comprises an oscillation generation unit, a detection unit and an indication unit, wherein the oscillation generation unit is provided with a crystal oscillation accessing end and is used for accessing crystal oscillation to generate an oscillation signal, the detection unit is connected with an output end of the oscillation generation unit and is used for picking up and rectifying the oscillation signal, and the indication unit is connected with an output end of the detection unit and is used for indicating whether crystal oscillation starts. According to the crystal oscillator detection circuit, when crystal oscillation starts normally, the detection unit detects an oscillation signal generated by the oscillation generation unit, rectifies the oscillation signal into a direct-current signal and outputs the direct-current signal to the indication unit, and the indication unit indicates that crystal oscillation is normal; and when crystal oscillation cannot start normally, the oscillation generation unit cannot generate an oscillation signal, the detection unit has no output, and the indication unit has no indication. The crystal oscillation detection circuit can be used for controlling to indicate whether crystal oscillation is normal or not just by using the low-cost detection unit and is low in cost and high in detection efficiency compared with a method in which detection is carried out by using an oscilloscope.

Description

【Technical Field】 [0001] The invention relates to the field of electronic device detection, in particular to a crystal oscillator detection circuit and a crystal oscillator detection device. 【Background technique】 [0002] Usually, electronic components need to be tested before they are welded or tested. When testing the quality of crystal components, special oscilloscopes are usually used. However, oscilloscopes are expensive and not easy to carry around, so there is a high cost. And the problem of low detection efficiency. [Content of the invention] [0003] Based on this, in view of the high cost and low detection efficiency of using a multimeter to detect crystal oscillator components, it is necessary to provide a crystal oscillator detection circuit with low cost and high detection efficiency. [0004] A crystal oscillator detection circuit includes: [0005] The oscillation generating unit has a crystal oscillator connection terminal for connecting the crystal oscillator to ge...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 周明杰郑平
Owner OCEANKING DONGGUAN LIGHTING TECH
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