What are the typical characteristics of thermistors?
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What are the typical characteristics of thermistors?
Thermistor is a type of sensitive element, according to the temperature coefficient is divided into positive temperature coefficient thermistor (PTC) and negative temperature coefficient thermistor (NTC). The typical characteristic of thermistor is that it is sensitive to temperature and exhibits different resistance values at different temperatures. The positive temperature coefficient thermistor (PTC) has a higher resistance value when the temperature is higher, and the negative temperature coefficient thermistor (NTC) has a lower resistance value when the temperature is higher. They are both semiconductor devices.
The common heat-resistant temperature of high-temperature glass is:
300 degrees, 500 degrees, 800 degrees, 1200 degrees. Heat-resistant 300 degrees high temperature glass, the temperature difference between cold and heat fusion is about 180 degrees, generally not suitable for use in biomass pellet furnaces. Heat-resistant high-temperature glass of 500 degrees, the temperature difference between cold and heat fusion is about 300 degrees, and the long-term heat-resistant temperature is within 450 degrees, which can basically meet the use of biomass pellet furnace as window glass. The heat-resistant 800 degrees high temperature glass, the temperature difference between cold and heat fusion is about 700 degrees, and the long-term heat-resistant temperature is within 800 degrees, which can fully satisfy the use of biomass pellet furnace as window glass.
The temperature difference performance of fine-grained high-temperature resistant glass on the same sheet:
The temperature difference performance value of the same sheet is the maximum temperature difference between the center and the edge of the glass sheet, that is, when δma x ≦700℃, it will not be broken due to thermal stress! The thermal shock resistance value refers to the maximum temperature change that the glass sheet can withstand, that is, it will not break due to thermal stress at δma x ≦700°C.
The difference between air fryer and oven appearance:
Air fryer looks more stylish. Not everyone can use air fryer. The selling price of an air fryer is basically around 1,000 yuan, which is not cheap. It can be used and it is definitely fashionable. It's a family, and the general elderly are really not used to using it, and the young people are more comfortable with it.
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