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What kind of indoor temperature and hygrometer is more accurate?
May , 18 2020
There are three kinds of temperature and humidity meters commonly used: 1.the electronic temperature and humidity meter determines the humidity according to the electrical conductivity of the humidity sensitive resistor or humidity sensitive capacitor at different humidity. 2.mercury or alcohol thermometer, the humidity is measured by a thermometer with double glass tubes, one of which has a volat...
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Understand CE certification in one article
May , 25 2020
CE certification, which is limited to the basic safety requirements of products that do not endanger the safety of humans, animals and goods, rather than general quality requirements, the harmonized directive only stipulates the main requirements, which are standard tasks. Therefore, the accurate meaning is: the CE mark is a safety mark instead of a quality mark. It is the "main requirement" that ...
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Understand FDA certification in one article
May , 25 2020
FDA certification: The United States Food and Drug Administration is abbreviated as FDA. FDA is one of the executive agencies established by the US government in the Department of Health and Human Services (DHHS) and the Department of Public Health (PHS). As a scientific management agency, FDA's responsibility is to ensure the safety of food, cosmetics, drugs, biological agents, medical equipment,...
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Pirate King's Wooden Clock Blind Box——Special Present
Jun , 03 2020
Are you still worrying about what to buy for your family or friends? Wine? That’s too expensive Shoes? But the moral is not good So here I would like to recommend a universal gift for giving options -- Wooden Clock Blind Box Amazing? And what is the blind box of wood clock? A creative wood clock with a good quality LED screen on the left side, And a surprise on the right side. What surprises are h...
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The structure and working principle of mechanical clocks
Aug , 17 2020
There are many structural forms of mechanical clocks, but their working principles are basically the same. Clocks and watches are mainly composed of the prime mover system, transmission system, escapement governor, pointer system and winding needle system. The mechanical clock uses a clockwork as the motive force of the driving system, and drives the escapement governor to work through a transmiss...
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What is a micro switch?
Aug , 17 2020
A micro switch is a contact mechanism that has a small contact interval and a snap-action mechanism, and uses a specified stroke and a specified force to switch action. It is covered by a shell and has a drive rod outside of it. Because the contact distance of the switch is relatively small, hence the name micro switch, also known as sensitive switch or snap-action switch. Introduction The micro s...
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Types and Principles of Humidifiers
Aug , 19 2020
Humidity refers to relative humidity. Every time people gets the number from the weather forecast, the percentage to the relative humidity is a measure of air humidity. The lower this number is, the drier the air is, and the low to a certain extent, people will feel uncomfortable. Generally speaking, relative humidity can be understood as the amount of moisture in the air. In summer, the household...
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What you should know about the servo motor?
Sep , 04 2020
Servo motors are micro motors used as actuators in automatic control devices. Their function is to convert electrical signals into angular displacement or angular velocity of the shaft. Servo motor, also known as executive motor, is used as an actuator in an automatic control system. It converts the received electrical signal into angular displacement or angular velocity output on the motor shaft....
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What's the difference between a heat transfer and a water transfer!
Sep , 27 2020
With the improvement of the silicone product industry, many customized silicone gift processing will use the appearance pattern technology, some products choose mold printing patterns, while others choose pad printing processing or heat transfer printing. For soft silicone rubber products, what are the differences between thermal transfer and water transfer? Overview The appearance proce...
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Why does the gyroscope rotate and what is the principle?
Oct , 17 2020
Have you ever played with gyroscopes? This little stuff is like a magic. As long as the center keeps rotating at a high speed, it is a tumbler. If you give it a fulcrum, you can not only tilt it, but also stand on a thin line or even rotate on the tip of a pen. I can play it all day. The history of gyroscopes What we usually say and play with the gyroscope is a simple mechanical...
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What to know about Bluetooth Technology?
Oct , 25 2020
The birth of Bluetooth Technology Bluetooth actually dates back to World War II. The core of Bluetooth is short-range radio communication, which is based on frequency hopping spread spectrum (FHSS) technology. It was proposed by Hollywood actress HEDY LAMARR and pianist George Antheil in August 1942. Inspired by the number of keys on the piano, they control the torpedo by using 88 different...
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Quick Guide To the Moon phases&How the Moon Affects affect us?
Dec , 31 2020
What Are the Moon's Phases?&Lunar phase changes First, from the perspective of our observation of the earth, the phases of the moon are roughly divided into four stages, namely the new moon, the first quarter moon, the full moon, and the last quarter moon. Around the 30th or the first day of the lunar month, the moon is between the sun and the earth. People on the earth just see the dar...
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