免费国产gay片在线观看_综合图片区欧美在线观看91AV_免费精品无码AV在线播放_少妇精品无码专区视频在线观看_成人精品一区二区三区在线播放_欧美国产日韩在线_草激情综合亚洲色婷婷五月_99re热这里只有精品66_2020最新国产高清毛片_人妻少妇上班偷人精品免费

Due to the continuous development of the information industry, the demand for related electronic components is also increasing, and patch buzzer is a typical representative. They are generally used in small electronic devices such as Bluetooth, reversing radar, personal medical equipment, and the like. Therefore, in order to ensure the effectiveness of their use, we also need to pay attention to the buzzer in the usual inspection, the following content for everyone to introduce in detail.

The first is the appearance of the test.

1. Buzzer surface is clean, no damage, dirt, deformation and other mechanical damage, uniform color, and has a specification model, polarity identification;

2. The outer box of the patch buzzer should be standardized, clean, and have product identification, and there should be no unfavorable phenomena such as damage or dirt.

3, the product label is clear, the content should indicate the material name, specification model, quantity, production date, product manufacturers and other identification.

In addition to the above three points need to pay attention, in the inspection buzzer, we also need to pay attention to their specifications and the polarity of the logo, try to ensure that the character logo is not less than three quarters of the entire character, no unlabeled, marked Unclear and other undesirable phenomena.

Followed by the size of the test.

When measuring the buzzer size, we can use the caliper tool. Measure the buzzer body size, pin spacing, and pin size with a caliper. After the inspection, complete the test with the corresponding PCB board.

In addition to the above two inspection standards, in the daily use of patch buzzer, but also to ensure that their production date should be within six months, or rejected. Only by fully implementing the above points can we ensure that their use is within the operational specifications.