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What is the concept of humidity in the weather forecast? What does it mean if the humidity is 100%?
May , 18 2020
The humidity forecast is mostly relative humidity, such as 100% here. 100% means that 100% of the water vapor can be contained in the air. If water vapor enters the air, it will condense into water. The upper limit of how much water vapor can be contained in the air is affected by temperature. The higher the temperature, the faster the water vapor molecules move and the less likely ...
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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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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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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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