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Electromagnetic pollution of electromagnetic interference (ie EMI) is the fourth largest pollution following the air pollution, water pollution and noise pollution, threatening the human health and the safe operation of electrical and electronic equipment. So, to make the EMI filter circuit of electronic ballasts comply with international standards CISPR15-2007 has great practical significance and application […]
1.PCB Board: Actually, the circuit boards available in the market usually contain a certain of residual sulfur element. This is beceuse, although PCB circuit board manufacturers will clean the sheet and eliminate residual sulfur-containing chemical solvents in the production process, but the general production process is quite difficult to clean it clearly. 2.Sulfur Rubber Power […]
In general, when there is LED Sulfuration phenomenon, lighting fixtures plant usually check the production, storage, power, and aging environment firstly, but ignored the lamp’s built-in power supply. LED power supply has thirty kinds of raw materials in which may also contain sulfur, chlorine and bromine. In a sealed, high temperature environment, these sulfur, chlorine […]
Thermocouple is a temperature sensing element, a kind of instrument which can measure temperature directly and turn temperature signal to emf signal, and transformed into the temperature of the measured medium through electrical instrument (secondary instrument). The basic principle of thermocouple temperature measurement is that two kinds of conductors made of different materials constitute a […]