reverse battery protection
Reverse battery protection was to prevent damage to the circuit that used the battery as the power source when the battery was connected in reverse in the direct current system. The following are a few common battery protection methods: ** 1. Use a relay and a relay to make a reverse protection circuit ** 1. ** Circuit Connection and Working Principle ** - He connected the battery to the relay and the coil, connected the battery to the relay, and connected the battery to the relay coil. He used a light bulb to replace the circuit. - When the positive and negative poles of the battery were correctly connected, the positive voltage passed through the relay coil through the relay coil, then passed through the coil to the negative pole, and then the contact was pulled in. The circuit obtained a positive voltage and worked normally. - When the positive and negative connections were reversed, the relay coil would have no current, so it would not be pulled in, and the circuit would not supply power to protect the circuit components behind it. After the positive and negative were reconnected, the circuit would continue to work. ** 2. Use MOS tubes as reverse protection for the battery ** - ** P-Channel Metal-Coupled Devices ** - ** Basic Connection **: The MOS tube is connected to the positive pole of the battery (drain-the positive pole of the battery, power supply-the positive pole of the power supply, grid-the negative pole of the battery, or ground). - ** Principle of operation **: When the battery voltage is present, the current will flow to the Body Diode. If the battery voltage is higher than the forward bias voltage of the body, the body will be turned on. At this time, the voltage level in the source of the Metalifu is the battery voltage minus the body voltage drop. Since the gate of the Metal-Channel Devices is connected to the negative terminal of the battery or to ground, the voltage applied to the gate-to-source will be negative. Once the gate-to-source voltage requirement of each Metal-Channel Device Data Table is met, the P-Channel Metal-Channel Devices will activate, the channel will be closed, and the current will flow to it instead of to the Body Diode. - ** Basic requirements **: - The basic electrical connections must be made according to the recommendations. - In terms of gate-source threshold voltage, in order to turn on the P-channel semiconductor, the difference between the battery voltage and the body conductor had to be higher than-1V (different mosfetts had different requirements). For low-voltage systems, it was best to choose a mos with a very low gate-to-source threshold voltage. - The maximum gate-source voltage specifications of the Metalgate must not be reached, or it will be damaged. - The drain current rating of a consecutively connected drain must be higher than the actual current flowing into it. - In terms of rated power, the calculated power consumption must be lower than the rated value of the device (for example, a device with a rated power dissipation of 8.3W at 25°C, the actual calculated power consumption must be lower than this value and leave a margin). At the same time, pay attention to the operating temperature range. - ** N-Channel Metal-Coupled Devices ** - ** Basic Connection **: The Ruoyun is connected to the negative pole of the battery (drain-the negative pole of the battery, source-the negative pole of the device or ground, grid-the positive pole of the battery). - ** Working principle **: During the circuit start-up period, the current flows from the positive terminal of the battery to the device, then to the body junction, and finally to the negative terminal of the battery. The body junction is turned on when it is forward-biased. At this time, the gate-source voltage is positive, and the Ruoyun begins to turn on, and the current will flow to the channel instead of the body junction. - ** Basic requirements **: - The basic electrical connections must be made according to the recommendations. - In terms of gate-source threshold voltage, it was not enough to just use a positive voltage to bias the gate to the source. It must meet the required level. For low-voltage systems, it was best to choose a Metal-Doped Circuit with a very low gate-to-source threshold voltage. - Pay attention to the maximum grid-source voltage rating. - The current rating shall meet the requirements of the data sheet. ** 3. Other methods ** It can also use series connection of the two, the rectify bridge, and the MOS protection.(specify gate, source, drain), fuse +TVS (When the voltage is greater than a certain value, such as 5.6V, it can dissipate a large amount of power and absorb the instantaneous high current caused by the instantaneous high voltage pulse. The fuse can choose a self-restoring fuse. When the current becomes very large, the resistance will also become very large, and it will recover after a period of time.) Connecting a large capacity at the back end could prevent the back-end circuit from being impacted (for example, when the 5V circuit suddenly connected to the 12V power supply, there was a time difference in the TVS's connection, and the large capacity could make the voltage slowly climb). Read more exciting novels for free
Spilling juice on homework
I have spilled juice on my homework. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
A platform to earn US dollars
The following is some download information related to the platform that earns US dollars: - Everve: You can register an account on its official website (requires scientific internet access). The specific download method is not mentioned. It is speculated that the registration process may include relevant download content. - The app can be downloaded directly from the mobile phone, but the specific download channel is not specified. It may be found in the mobile app store (such as the Android app store or the Apple App Store). Different platforms had different download methods and requirements. When downloading and using it, one had to pay attention to its legitimacy, security, and protect personal information. The novel "Small Business" is equally exciting. Everyone is welcome to click and read it!
Fight Through the Firmament, Hall of Souls, Old Man Mu Gu
Old Mu Gu was the villain in the fantasy novel Battle Through the Heavens and its derivative works written by Tian Can Tudou. He was a tier eight alchemist and possessed the strength of a peak three star Dou Zun. His status in the Hall of Souls was revered and he was respected as an elder. He was highly regarded by the hall chief. He was the junior brother of Yao Chen, the venerable Yao. After he was expelled from the sect, the two of them fell out. Old Mu Gu had become enemies with the main character, Xiao Yan, many times in the novel. He had attempted to frame Yao Chen and sow discord. He had even chased after Xiao Yan many times in an attempt to snatch the 'Heavenly Flame' and 'Flame Secret' treasures. However, he had failed. He had been rescued by Xiong Zhan when he was chasing after Xiao Yan in the Pill Realm. He had failed to use the Pill Gathering to snatch the "Three Thousand Burning Flame". He currently possessed the Sea Heart Flame that Han Feng offered. Xiao Yan had appeared during the great battle in the Death Soul Mountain Range. After which, he had successfully rescued Yao Chen and escaped from the Hall of Souls. After that, he was arranged by the chief of the Hall of Souls to head to the other continents (excluding the northwestern continent) to collect spirit bodies in the Man Hall. In the end, Xiao Yan forcefully stripped away his Sea Heart Flame when Xiao Yan's group massacred the Man Hall, one of the three halls of the Hall of Souls. He wanted to self-destruct in a furious manner, but he was killed by Xiao Yan with a single strike. Old Mu Gu was extremely powerful. His Spiritual Strength was also unfathomable. He had already stepped into the Spirit Realm. His Spiritual Attack was something that many experts in the Dou Qi domain found difficult to block. Hurry up and click on the link below to return to the original classic, Battle Through the Heavens!
What song did Liu Xingyu sing on the Avenue of Stars?
Liu Xingyu had sung " My Future Is Not a Dream " and " The Red Flag Flutters " on the Walk of Fame. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The picture of the fox demon's little matchmaker bamboo industry chapter
You can view the pictures of "Fox Demon Little Matchmaker Bamboo Industry" in Duitang (Meitu Wallpaper Community). Duitang has billions of high-definition high-quality pictures, which are shared by tens of millions of users. You can download the beautiful pictures with one click. Watching "Fox Demon Little Matchmaker: Bamboo Industry Chapter" was not enough. Everyone is welcome to click to read the novel!
Hetian jade shop recommendation
Here are some recommendations for Hetian jade shops: - On Taobao, Jade Cuixuan had a rich line of Hetian jade products, from entry-level to high-end collectibles. The shop owner was passionate and professional, with thoughtful and patient service, and the suggestions he gave were very relevant. The flagship store of Jinshiyuan mainly sold Hetian jade jewelry and ornaments. The price was close to the people, and the details were paid attention to. Every item had been carefully polished. The Xinjiang Treasure Hall mainly sold Hetian jade produced in the country of origin, including bracelets, necklaces, rings and other jewelry, jade pendants, playthings and other categories. The shop owner was generous and never bargained. - If you travel to Xinjiang to buy jade, you can choose the regular old shop, the National Jade League, the World Jade. Its quality is assured and there is after-sales guarantee. There is also a museum of Hetian jade on the second floor of the shop, where you can understand the historical development and cultural spirit of Hetian jade. - If one wanted to purchase Hetian jade seeds, one could head to the second-floor raw material market of the Prince of Xiang's Jade Market on Shiquan Street. This was currently a famous distribution center for Hetian jade raw stones in the mainland, as well as a famous trading center for top-grade raw stones. The novel "Ledge" is equally exciting. Everyone is welcome to click and read it!
Beautiful woman met a mountain bandit on the roadside novel, free to read
The following were some novels that involved beautiful women encountering bandits on the roadside: - In a certain novel, there was a scene where the female protagonist was panting after getting rid of others. She met a man carrying a machete with her companions. The man's lecherous eyes darted around the female protagonist's body. He even said," I opened this road and planted this tree. I want to pass by and leave behind money to buy the road." He even wanted the female protagonist to be his wife. - There were also stories in which the main character was a bandit. For example, in Indestructible Diamond Bandit Lord, the pig's trotter spirit transmigrated into the game world and became a bandit. In such novels, there might be scenes where the bandit met a female character by the roadside. In Sky Robber, the main character was a bandit. The novel had a rich plot, and there might be scenes like a beautiful woman meeting a bandit. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Baoding Soaked Alkaline Melting Reaction Kettle
The production principle of the soda ether equipment was dissolving, not a chemical reaction. Using the drum-type soda ether reaction kettle as an example, a certain proportion of raw materials and water were added into the drum, and then heated and pressured. When the temperature reached about 165 degrees Celsius and the pressure was about 8 kilograms, the soda ether began to dissolve. The drum kept rotating the cylinder to heat the raw materials more fully, thus accelerating the dissolution, and finally obtaining the liquid soda ether. This process was like using a pressure cooker to make porridge, adding rice and water, then heating it up. After the temperature reached, it would dissolve for a period of time. Although the production process had high temperature and high pressure, similar to the working principle of a reactor, it was actually a simple dissolving process. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Shima150600 camera to Fujifilm xt3
At present, Sima did not produce the 150 - 600 lens with the Fuji mount, but the 150 - 600 lens could be transferred to the Fuji XT3 body through the transfer ring. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Meicheng weather forecast 15-day forecast query
If it was Meicheng Town, Minqing, Fujian Province, the 15-day weather forecast was as follows: 10/26 today cloudy 19 - 26 ° C;10/27 tomorrow moderate rain to light rain 20 - 28 ° C;10/28 the day after tomorrow light rain 21 - 23 ° C;10/29 Tuesday cloudy to overcast 18 - 25 ° C;10/30 Wednesday cloudy 14 - 26 ° C;10/31 Thursday light rain to cloudy 14 - 25 ° C; 11/01 Friday heavy rain 17 - 25 ° C;11/02 Saturday moderate rain to light rain 15 - 24 ° C;11/03 Sunday light rain to moderate rain 14 - 23 ° C;11/04 Monday cloudy to overcast 15 - 22 ° C;11/05 Tuesday light rain 17 - 20 ° C;11/06 Wednesday heavy rain 14 - 18 ° C;11/07 Thursday cloudy to cloudy 11 - 14 ° C; 11/08 Friday cloudy 10 - 14 ° C;11/09 Saturday sunny to cloudy 10 - 14 ° C. The 15-day weather forecast for Meicheng, Meizhou, Guangdong Province was not found, so it could not be provided accurately.