On the 21st local time, Maria Van Kokhoff, the technical director of the WHO's health emergency project, said that Delta, a variant strain of the new coronavirus that was first discovered in India, has now spread to 92 countries around the world. Kokhov pointed out that the Delta variant is spreading rapidly around the world, which [...]
The Uses of ceramic capacitors, this type of capacitors are commonly used in high-frequency circuits and high-voltage circuits, temperature compensation, and high temperature stability circuits. Bypass (decoupling) This is to provide a low-impedance path for some components connected in parallel in the AC circuit. In electronic circuits, decoupling capacitors and bypass capacitors both play an anti-interference [...]
China's economic recovery gives foreign companies confidence Recently, a number of foreign media quoted data released by international economic agencies and pointed out that China's strong economic growth after the epidemic is a reliable locomotive for the global economy. The resilience of the Chinese market gives foreign companies confidence. The strongest year-on-year growth in the first [...]
Important indicators about capacitance Capacity: The capacity of the capacitor, that is, the capacity of the stored charge. The basic unit of capacity is farad (F), but on the motherboard we commonly use units such as microfarads (μF) and picofarads (pF) (the conversion relationship is 1 farad = 1000000 microfarads, 1 microfarad = 1000 nanofarads = [...]
The International Labor Organization established the World No Child Labor Day in 2002, focusing on the global attention to child labor and the actions needed to eliminate this phenomenon. Every year on June 12th, governments, employers' and workers' organizations, civil society, and hundreds of millions of people from all over the world gather to highlight the [...]
General capacitor failure phenomena: capacitor open circuit, breakdown, leakage, breakdown after power-on cause of issue 1. Open circuit of components After the capacitor can be developed open circuit, there is no function of forming a capacitor. After different circuit capacitor open circuit faults occur, it depends on the specific circuit fault phenomenon. .Buzzing, etc. After the [...]
Missing chip! Chip shortage! This domino is being transmitted in the global industrial chain. And every fall of a card causes a new chain reaction. A recent study by Goldman Sachs shows that there are as many as 169 industries in the world that are affected to a certain extent by the shortage of chips, from [...]
The power amplifier power supply filter capacitor has three functions: 1. Filter the pulsed DC power obtained after rectification to reduce AC interference. 2. High-speed power supply. 3. Provide access for audio signals. The filtering effect of the capacitor on the power supply only shows whether there is AC interference to the power amplifier; the energy [...]
May 31. China's vaccination campaign is progressing rapidly. On May 28, China's new crown vaccination dose exceeded 600 million, which is only 5 days after the 500 million dose on May 23. The American "Wall Street Journal" published an article that if China can maintain such a speed, it is expected to change people's expectations of [...]
Common problems in the selection of film capacitors A. improper selection of rated voltage The rated voltage is improperly selected, and the most frequent place is the resonant circuit part (C5). R&D personnel should base on the equipment's rated power, input voltage, circuit topology, inverter control method, load material, load magnetic load rate, circuit Q value [...]