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So far xiang xaunsn has created 140 blog entries.

Capacitor step-down principle

The principle of capacitor step-down is not complicated. His working principle is to use the capacitive reactance generated by a capacitor at a certain AC signal frequency to limit the maximum operating current. For example, under 50Hz power frequency conditions, the capacitive reactance generated by a 1uF capacitor is about 3180 ohms. When 220V AC voltage [...]

By |2021-04-12T02:04:13+00:00April 12th, 2021|Knowledge|0 Comments

What are the main uses of capacitors?

There are many uses of capacitors, mainly as follows: 1. DC blocking: The function is to prevent DC from passing and allow AC to pass. 2. Bypass (decoupling): Provide a low-impedance path for some components connected in parallel in the AC circuit. 3. Coupling: As a connection between two circuits, allowing AC signals to pass through [...]

By |2021-04-09T06:32:42+00:00April 9th, 2021|Knowledge|0 Comments

The impact of the blockage of the Suez Canal on the world economy

The impact of the blockage of the Suez Canal on the world economy "Ships, containers, and cargo are all in the wrong place!" In recent days, practitioners in every link of the global supply chain have expressed similar sighs. A 400-meter-long heavy-duty container freighter flying the Panamanian flag has been blocked in the Suez Canal channel [...]

By |2021-03-29T01:37:27+00:00March 29th, 2021|News|0 Comments

Application of Super Capacitors in Automobile Control

A super capacitors is a very large capacitor with a capacitance of up to thousands of farads. According to the principle of the capacitor, the capacitance depends on the distance between the electrodes and the surface area of ​​the electrodes. In order to obtain such a large capacitance, it is necessary to reduce the distance between [...]

By |2021-03-25T02:42:19+00:00March 25th, 2021|Knowledge|0 Comments

Fire in Japanese semiconductor giant factory

Shibata Hideri, president of Japanese semiconductor giant Renesas Electronics, said on the 21st that a fire broke out in an important factory of the company, which may have a very large impact on the supply chain. The company will do its best to restore production to the affected factories within one month. According to the news [...]

By |2021-03-22T01:42:04+00:00March 22nd, 2021|News|0 Comments

What is a trimmer capacitor and its application

The trimmer capacitor is actually a variable capacitor, but the range of capacitance change is small, usually only a few picofarads to tens of picofarads. Trimming capacitors are divided into mica trimming capacitors, ceramic-mediated trimming capacitors, film trimming capacitors, pull-line trimming capacitors, and so on. It is often used as a compensation capacitor or correction capacitor [...]

By |2021-03-20T01:58:26+00:00March 20th, 2021|Knowledge|0 Comments

Germany’s economic growth forecast for this year is lowered

The German Economic Advisory Committee issued a report on the 17th that due to the continued fermentation of the new crown epidemic, the committee lowered its forecast for German economic growth in 2021 from 3.7% in November last year to 3.1%. The report said that in view of the new increase in the number of new [...]

By |2021-03-18T02:12:45+00:00March 18th, 2021|News|0 Comments

How to choose a filter capacitor?

The filter capacitor plays a very important role in the switching power supply. How to choose the filter capacitor correctly, especially the choice of the output filter capacitor, is a problem that every engineering and technical personnel is very concerned about. The ordinary electrolytic capacitor used in the 50Hz power frequency circuit has a pulsating voltage [...]

By |2021-03-15T01:32:52+00:00March 15th, 2021|Knowledge|0 Comments

The U.S. China’s Medical Products from tariff exemptions

The U.S. China's Medical Products from tariff exemptions According to an announcement issued by the Office of the United States Trade Representative in the Federal Register, the official publication of the US government on the 10th local time, the Biden administration will extend tariff exemptions for approximately 99 medical products from China until September this year. [...]

By |2021-03-12T01:32:29+00:00March 12th, 2021|News|0 Comments

mica capacitors the structure and characteristics

The medium of mica capacitors is mica sheet, and the electrodes are metal foil type and metal film type. Earlier mica capacitors consisted of metal foil or silver sprayed on the surface of the mica sheet to form electrodes, and then laminated them according to the required capacity and then diffused and pressed them into a [...]

By |2021-03-10T02:35:25+00:00March 10th, 2021|Knowledge|0 Comments