You regard the bidirectional thyristor as a switch, and when selecting, consider its rated current, withstand voltage and trigger voltage.
Close the power switch S, the small bulb is not bright, indicating that the thyristor is not conducting; Press the button switch SB again, input a trigger voltage to the control pole, and the small lamp lights up, indicating that the thyristor is conducting. What does this demonstration teach us? This experiment tells us that to make the thyristor open, one is to apply A forward voltage between its anode A and cathode K, and the other is to input a forward trigger voltage between its control pole G and cathode K.
inYou can hardly feel the weight on your hands, so you can achieve a light wearing experience. After the headset is fully charged, it can also last about 8 hours of continuous music, and it can be used for about 24 hours with the charging bay. The appearance design of the headset is a flexible U shape, which is relatively simple.
2, South Carolina OE MIX as a hundred yuan level Bluetooth headset, considering the sound quality and comfort, delay of these three points, is definitely the most worthy of choice in the hundred yuan level Bluetooth headset. It is not only the main cost-effective products of South Carolina, but also has reached the high-end flagship level standards in terms of configuration and adjustment technology, which can be called the leader in affordable headphones.Since the launch of the South Carolina headset, it has continued to receive praise from users and professionals.
3, South Carolina bone conduction headset -- Runner Pro4S is perfectly adapted to swimming needs, thanks to the integration of new waterproof materials in its surface material, and the overall material is covered in the form of full wrap. This allows the headphones to play the best waterproof performance, in addition to the underwater exclusive sound function, so that we feel more three-dimensional underwater sound quality effect, to achieve excellent swimming experience.
4, when choosing a Bluetooth headset that does not hurt the ear, open headphones are a good choice, becauseThey are designed to be inaudible, allowing you to enjoy the music while still maintaining a sense of your surroundings. Here are some popular open headphones recommendations: South Carolina 00 pressure open headphones - a professional veteran that often blows up the digital market and is considered one of the best open headphones to use.
5, Bluetooth headset sound quality is best and does not hurt the ear Bose, Sony, Sennheiser, JBL, Jabron, Rambler and so on. Bose Select Bose headphones and earbuds for both performance and comfort. Choose from a wide range of Bluetooth headsets and earbuds to get closer to your favorite music.Sony uses the DSEE Extreme digital sound enhancement engine for better audio, and listening to music is always enjoyable.
View the mobile phone manual In the specification parameters of the manual, there will be a relevant introduction to mobile phone wireless charging. If the phone supports wireless charging, it will be clearly explained in the manual. View Phone Settings In your phone's Settings, you can find options such as battery or wireless and networking. If the phone supports wirelessCharging, wireless charging Settings are usually provided in these options.
One: Test with a wireless charger This is the most simple and direct method, put the phone on the wireless charger, if the charging is displayed, it means that the wireless charging function is not supported. This test is because the current wireless charging mobile phones and chargers on the market are compatible with the QI protocol, and can be charged immediately.
Check the mobile phone manual: If there is still a mobile phone manual, or the mobile phone has internal instructions, you can check whether the mobile phone has the introduction of wireless charging function in the function parameters. Wirelessly chargeElectrical test: This is the most simple and direct method, put the mobile phone on the wireless charger, if the charging is displayed, it means that the wireless charging function is not supported.
Check your phone's manual If you're not sure if your phone supports wireless charging, check your phone's manual. In the specification parameters of the manual, there will be a relevant introduction to wireless charging. If your phone supports wireless charging, this will be clearly stated in the manual. Check your phone's Settings If you have purchased a phone but don't know if it supports wireless charging, you can check your phone's Settings.
Contactless IC card reader can not give their own IC card money (2) reason: ic card is just a number, is never changed, the number and my identity is associated, there is a database, the key place in the card reader connected to the server database. Contactless IC card: (1) Also known as contactless IC card or RF card, is a new technology developed in the world in recent years.
Non-contactID card reader, rely on the antenna to generate electric field to communicate. There is a built-in antenna somewhere on the reader, usually a coil, or a coil on the circuit board. The IC card surface is also a built-in coil, and then there is a chip in one corner, but it does not come with a power supply. When the IC card and the reader are close to a certain distance, the two coils interact to generate an electric field, and then the two sides can communicate with each other after matching the password.
First of all, insert the memory card into the card reader, and the computer will be connected in the lower right corner of the direction to show the discovery of new hardware (XP automatic installation program), installed after the prompt can be used. When I turn on my computer, there will be a display of ICONS. Just put the things you want to install in the appropriate folder.
Adds and subtracts data on the card directly through the card reader. Well, if you want to communicate as your first saying, so many buses have to communicate with the host, that is troublesome.
is actually very simple. First you need to find the narrow slot in the card reader which is the SD card slot. Then insert the SD card into the card slot. Then plug it into the USB port of your computer for connection. After inserting the card reader, double-click on the computer to open "My Computer" to enter. thisYou can see the USB flash drive of your card reader. Finally, double-click to enter the SD card and start the operation by yourself.
Contactless card reading: Place the IC card chip face up in the main booth until the "Card" indicator lights up. Select the corresponding card on the host computer for operation. When the card is reading or writing, the "Run" indicator lights up. Do not remove the card or turn off the power. After reading and writing, press the card reader button to remove the card. If the primary card fails, you can enable the emergency standby card.