PTC, or positive temperature coefficient thermistor, is a semiconductor material whose resistance increases with temperature. In 1955, HoHyman et al. of Lamphillipe Company first discovered this material, that is, after adding trace rare earth elements to BaTiO3 ceramics, its room temperature resistivity decreased significantly, and the resistance value increased by several orders of magnitude in a specific temperature range. Over the years, the research of PTC materials has made major breakthroughs, the theory is becoming more and more mature, and the application range is constantly expanding.
Rated zero power resistance refers to the zero power resistance measured at the ambient temperature of 25 ° C. Minimum resistance Rmin refers to the minimum zero power resistance value that a PTC thermistor can have. Curie temperature Tc for the application of PTC thermistors, electricityThe temperature at which the resistance begins to rise steeply is important, and we define it as the Curie temperature. The resistance RTc of the PTC thermistor corresponding to the Curie temperature = 2*Rmin.
The birth of PTC thermistor can be traced back to 1950, barium titanate as the main component of the thermistor appeared in 1954. They have a wide range of applications in industry, such as temperature measurement and control, automotive temperature detection and regulation, and temperature management in household appliances, such as water heaters, air conditioners and cold storage. They are also used to protect appliances such as heaters, motors, transformers and high-power transistors from overheating through their heatResistance characteristics enable automatic regulation and protection.
General conventional hair straightener is mainly composed of three parts: heating element straightener is straightened by high temperature, its core component is the heating element, generally commonly used heating element ceramic heating element, PTC heating element and MCH heating element three kinds, ceramic heating element has the advantage of environmental protection, heating speed is fast, is a more commonly used one.
According to the different materials of the heating plate, the straightener can be divided into: pure ceramic hairHot plate, aluminum plate with ceramic glaze sprayed on the surface, glass-ceramics plate. The advantages of ceramic heating plate are environmental protection, good insulation performance, good safety, the disadvantage is that the processing cycle is long, the processing link is more, and because the edge is difficult to deal with is very smooth, in the process of straightening the hair will slightly pull the hair.
According to the different heating body, the hair straightener is mainly divided into ceramic heating body, PTC heating body and heating wire heating body. Ceramic heating body is known for its environmental protection and rapid heating, usually within 30 seconds to 45 seconds can raise the surface temperature of the splint to 200 degrees. However, because the ceramic heating body is sintered at a high temperature above 1000 degrees, ifIf the circuit is out of control, the temperature may quickly exceed 300 degrees, causing the plastic material fixing the heating plate to burn out, and the heating plate to fall off, which may burn the user.
According to the different materials of the heating plate, the hair straightener can be divided into: pure ceramic heating plate, aluminum plate sprayed with ceramic glaze on the surface, and microcrystalline glass plate. The advantages of ceramic heating plate are environmental protection, good insulation performance, good safety, the disadvantage is that the cycle is long, there are many links, and because the edge is difficult to deal with is very smooth, in the process of straightening the hair will slightly pull the hair.
Tourmaline is just a material added to the aluminum plate, the same as nano silver. Allegedly killedThe effect of bacterial disinfection. As long as the structure of the aluminum plate is good, it will not shave the hair when pulling, that is, the hair does not hurt. Ceramic is said to pull the hair does not hurt the hair, but it is high temperature, how can not hurt the hair, and the ceramic work is almost not perfect, will shave the hair, that is, pull the scalp pull the pain.
1, rated power in 100-160wh (inclusive) can be carried, must be insulated packaging, approved by the airline before carrying. Charging bank over 160wh, not allowedCarry and check. It can be brought back to the pedestrian for temporary storage business. Self-made charging treasure, modified charging treasure, charging treasure insulation packaging or shell damage, do not allow to carry. Unidentified power bank cannot be carried.
2, according to the regulations of the Civil Aviation Administration of China, you can carry a power bank when flying, but you need to comply with the following regulations: Capacity limit: The capacity of the power bank should not exceed 10,000 mAh. Power banks exceeding this capacity are not allowed on board. How to carry: The power bank should be placed in the carry-on baggage, not in the checked baggage. Recommended will chargeThe treasure is kept in a handbag, backpack or hand luggage for easy access.
3, the charging treasure carried by the plane can not exceed 20,000 Ma charging treasure. The Civil Aviation Administration has regulations that you can take a charging bank by plane, but there are certain restrictions on the number of charging banks and the size of energy and carrying, and in special cases you need to go through the Civil Aviation Administration's permission to carry.
Heated surf mode, the strong water column can directly impact the Yongquan point on the bottom of the foot to speed up blood circulationThe speed of... After foot bath, pull the foot bath to the bathroom, open the bottom drain pipe and the plug at the front end to drain water.
It is recommended to follow the instructions, which have detailed steps. HITH intelligent collapsed-foot massagers D3 power cord comes with an innovative anti-leakage protection system, when harmful leakage current occurs in the whole machine, the power cord will cut off the entire circuit system within 0.1S, ensuring that we are safer in the foot bath process, this safety design is not seen in the ordinary foot bath.
There are two rows of touch buttons on the touch screen, five buttons are: timing adjustment, temperature setting, surfing, switchAnd massage. If you want to open any function, you can touch it with your hand. Timing and temperature buttons have a hidden digital display in the middle, showing the current water temperature and other information.
Because the common fault of millet hith foot bath is that the foot bath is not powered, maintenance method: If the foot bath is not powered, you need to check whether the plug of the foot bath is burned out, you can replace other electrical plugs to see if it can be eliminated. Therefore, the fault of Xiaomi hith foot bath is that the foot bath is not powered.
HITH foot bath bucket How about Hith foot bath bucket its soft rubber massage pad massage more comfortable, and the water temperature can be according to their own>