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What is graphene heating? Is the graphene heating effect good?
May , 11 2021
Heating demands for the coldest winter from December to February is a life concern for everyone. However, not just indoor heating, people nowadays pay more attention to mobile heating. What are those mobile heating products? Is the heating effect good enough? Go ahead and read this article. In the past years, we all used to warm up our body with electric blanket during the coldest m...
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Is white noise harmful?
Feb , 20 2021
We always say that noise makes people sleepless and upset, but there is a kind of noise that has a complete "reverse effect". It can make most people sleep sweeter, more concentrated and emotionally stable. So what kind of noise can have such a magical effect? It is the sound of falling rain on a rainy day, the sound of running water in the mountains, the sound of birds in the forest...
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What is Electromagnetic Waves&How do electromagnetic waves travel?
Jan , 15 2021
Many people have questions about the relationship between electromagnetic wave frequency (wavelength) and signal coverage. Some people say that the higher the frequency of electromagnetic waves, the weaker the penetration, so the coverage is poor. So some people ask, X-rays and γ-rays are high in frequency, aren't they used for medical photography and metal equipment flaw detection? Some people ha...
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What is DCF signal?
Jan , 15 2021
Introduction of DCF Code The flingDCF transmission tower and spare transmission tower are located in Mainen (latitude: 50°01' N, longitude: 09°00' E), about 25km southeast of Frankfurt. Since 1959, DCF77 has served as a standard frequency. Since 1973, time and date information has been added. The DCF transmission power is 50kW and the transmission frequency is 77.5kHz. The DCF signal is tran...
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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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What is a decibel (dB)?
Dec , 23 2020
Many people may think that the decibel is a volume unit. However, decibels are more than just used to indicate volume. In addition to dB, other units such as dBV, dBu and dBFS, etc, they seem to be related to decibels, but what they are and what’s the difference? Here comes the answer below help you figure it out. The relationship between volume and decibels In daily life, when we talk about...
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Introduction to SLA 3D printing&how does SLA work?
Nov , 13 2020
What is 3D printing? Three-dimensional light-curing 3D printing (often referred to as SLA) is one of the most popular and common technologies in the field of additive manufacturing. It works by using a high-power laser to harden the liquid resin in the container to produce the desired 3D shape. In short, the process uses low-power lasers and photopolymerization to convert photosensitive liquids in...
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What is Type-C and why you’ll want it?
Nov , 06 2020
In recent years, Type-C has attracted much attention due to its "fast, strong, and small" characteristics. Now more and more products begin to adopt Type-C interface, and in the future, Type-C will also unify the interface world. So, what exactly is this Type-C? What is Type-C? Type-C stands for USB Type-C interface, which is a form of USB interface. After USB Type-C was launched in 2014, it was f...
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How does the light guide plate work？
Oct , 08 2020
Principle of light guide plate LCD light guide plate lighting technology was first invented by Japan mingtuo company in 1986, known as edge light, which is the mainstream method of notebook computer LCD backlight lighting. Its working principle is that the pure white light emitted by the cold cathode fluorescent tube (line light source) is introduced from the end face of the transparent plate and ...
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How do the backlight function of LCD clock work？
Sep , 30 2020
The above picture is the backlight driver circuit diagram of a display screen (AUO M190ETN01.0 ,19") I designed before. This article is going to take this as an example to explain how to design an LED backlight driver circuit and the related principles behind it. 1. Basic principle analysis Large-size display screens are currently mainly LCDs. The LCD itself does not emit light. If you want t...
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