On July 27, local time, the Chinese Embassy in Burundi and the Burundi Ministry of Public Health and AIDS Prevention and Control held a material handover ceremony for the Chinese counterpart hospital in Burundi at the Grand Prince Hospital. This batch of materials is the eighth batch of anti-epidemic materials donated by China. The purpose is [...]
We know that a series of AC coupling capacitors in the series signal can provide DC bias and overcurrent protection, but this will also bring another problem to the link PDJ (Pattern-Dependent Jitter). The placement of AC coupling capacitors has just been solved, and now we have encountered the value selection problem! Obviously, the AC coupling [...]
The Olympics is approaching, Tokyo's security will be raised to the largest scale. The opening of the Tokyo Olympics is just around the corner, and local security work is being promoted intensely. During the Tokyo Olympics and Paralympics, all parts of Japan will send support police forces to Tokyo, and about 60,000 people will be [...]
pregnant women Now, pregnant women should go to get the new crown vaccination. The WHO immunization strategy advisory expert group released the latest vaccination roadmap. This version of the recommendation indicates that pregnant women are at increased risk of serious infections from the new crown. Experts recommend that pregnant women be vaccinated. At [...]
Power supply high frequency filter capacitor selection skills 1) Theoretically, the impedance of an ideal capacitor decreases as the frequency increases (1/jwc), but due to the inductive effect of the pins at both ends of the capacitor, the capacitor should be regarded as an LC series resonant circuit, and the self-resonant frequency is The FSR parameter [...]