It has been tossing audio recently, but Bluetooth speakers are rarely involved. It may be due to physical limitations and it is impossible to have too good sound quality output. Therefore, there has been little attention. A few days ago, a friend sent a Bluetooth speaker, the brand is Garinemax, it is said that the sound quality can be seconds out of the market most of the Bluetooth speakers below 300 yuan, so the goods were brought to the interest, the following will take you to see this can be called Second off Bluetooth speaker products below 300 yuan. In order to prevent everyone from saying that I am advertising, there is no over-introduction to the brand of the speakers. We are focusing on the products. As a hundred or so Bluetooth speakers, this package also said in the past, at least very strong, but also very fine. This is the speaker and all the accessories, including a charging cable, a 3.5mm audio cable and a thin manual. The speaker is a rectangle with rounded corners. This speaker gave me a good first impression. The material of the body is metal. The surface is sandblasted. The material is very solid and the workmanship is very fine. From the appearance point of view, it is enough. Compared with the high-end Bluetooth speaker products on the market. The large circular opening on the front of the speaker is beautiful, with the Garinemax brand LOGO in the lower right corner. Control buttons are designed on the right side of the fuselage, TF expansion card, audio input, charging port designed on the left side of the fuselage. There are 2 large anti-slip strips at the bottom to ensure smooth placement on a smooth surface. The back of the speaker is almost exactly the same as the front, except that there is no Garimanex logo in the lower right corner. Is the body very small? We have a good amount of hands in our hands and can be said to be very solid in terms of materials. Take out the music player and turn on Bluetooth. It's easy to pair and connect. The indicator of the speaker lights up when it is working. Play a song and try the sound quality. The first impression of this Garimandex bluetooth speaker was that it was very loud, and it was fully capable of playing on an open field. After all, the cavity of this speaker was not too small. Tri-band performance is more balanced. Although it does not reach the so-called HIFI level, it is more than enough to cope with daily music playback. For the sense of hearing, Garimmanex also gave me a good feeling. When you listen closely, you can clearly feel that multiple sound units work together, and the two low-frequency playback effects behind are really good. As mentioned above, the biggest advantage of this Garimanex Bluetooth speaker is that because of the rear of the separate bass unit, so the low frequency performance is more prominent, full of sense. In the portable Bluetooth speaker is definitely the top ranked, but the disadvantage is that the same "because of structural bass care" in the performance of female voice is not crisp enough. Bluetooth speakers are often used in conjunction with mobile phones. In view of the limitations of Bluetooth transmission bandwidth, it is impossible to perfectly interpret high-rate music files, and the sound quality cannot be compared with professional-grade speakers. However, for everyday use, “the beauty of feeling melody†It is completely sufficient. Even if there is a dial-in call during the playing of the music, you can choose to use the Bluetooth speaker for hands-free listening. At the same time, this Garimandex bluetooth speaker can also be used with a laptop computer, through an audio cable or direct Bluetooth access, which can be used as an effective complement to notebook computers and improve the sound quality of the notebook computer. Putting together with thinkpad not only does not appear to be low-grade, but it has also added a commercial range. The Garimandex bluetooth speaker, whether it is workmanship or sound quality, is among the best in the hundred-dollar class, with two full-range sound units and rear independent woofer configurations, taking into account portability and good sound quality, in addition to desktop placement. Use is also very suitable to go out to play and carry, whether it is on the desktop to connect to a computer, or with wireless devices used to listen to music, is a good choice, and its sound quality is also quite good, as can not seconds off 300 All Bluetooth speakers below the yuan, you see it. Bi Directions Thyristor (Triac) Bi Directions Thyristor (Triac) is equivalent to the antiparallel connection of two unidirectional thyristors, but only one control pole. Bi Directions Thyristor,Electronic Components Triac,Power Thyristor For Inverter,Silicon Power Bipolar Transistors YANGZHOU POSITIONING TECH CO., LTD. , https://www.yzpst.com
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Bidirectional thyristors are made of N-P-N-P-N five-layer semiconductor materials, and three electrodes are also derived from the outside. Its structure is shown in the figure. Bi-directional thyristor volt-ampere characteristic curve Since the forward and reverse characteristics of the bidirectional thyristor are symmetrical, it can be turned on in any direction and is an ideal AC switching device.