Central air conditioning and fresh air systems are systems dedicated to improving indoor comfort. In real life, many people take it for granted that air conditioners can also be used for air blowing. There is no need to match the fresh air system. In fact, central air condition…
Recently, the "Smart Light Industry" Summit Forum and the China Light Industry Top 100 Enterprise Awards Ceremony hosted by the China Light Industry Federation was held in Beijing China Workers' Home. The Vice President of the China L…
First, the measuring range of the Leeb hardness tester
According to the principle of Richter, as long as the material has a certain rigidity and can form a rebound, the accurate value of the hardness can be measured. However, many mate…
The overall ranking of technology company CEOs has declined.
Glassdoor, the latest job search site, announced the results of its annual CEO evaluation. The employees anonymously scored the most popular corporate executives in North America and Europe.
This requirement applies to star ratings (collectively referred to as cinemas) of cinemas, cultural palaces (halls), clubs…
For the purchase of television, these parameters, in fact, I am a complete white. Only know that you want to choose the right size to avoid the bad eyes. On the other hand, Sony Dafa is very good, and the price will buy what you can accept. <…
A temperature transducer is a sensor that senses temperature and converts it into an available output signal. The temperature sensor is the core part of the temperature measuring instrument and has a wide variety. According to the measurement method, it can be divided …
MOSFETs are already the absolute main components in the field of switching power supplies. However, in some instances, bipolar junction transistors (BJTs) may still have certain advantages over MOSFETs. Especially in off-line power supplies, cost and high voltage (grea…