搜尋結果
2018年9月20日 · 什麼是PFC. PFC（功率因數校正）是指改善功率因數，並使功率因數接近1。 這是通過使功率因數角（相位角）接近0°，從而減小電壓與電流的相位差，使視在功率接近有效功率。 同時抑制諧波電流。 諧波抑制在國際標準IEC61000-3-2中已經分類限值並規定了最大額定諧波電流，對應的電子裝置基本上都配備PFC。 單級PFC與Interleaved (交錯式)PFC. PFC的基本工作是使電感電流呈三角波狀，並控制電流使其平均值為正弦波，從而校正電壓和電流的相位差。 下面是以單級和交錯式為例的PFC基本電路。 顧名思義，單級PFC由1組開關（電晶體）、二極體、電感構成，而交錯式PFC由2組構成，開關以180°相位差進行驅動。
- 臨界模式
該電路是液晶電視的PFC單元，是單級PFC的臨界模式（BCM）控 ...
- 臨界模式
PFC Choke 功率電感器 - 引線式 在Mouser Electronics有售。Mouser提供PFC Choke 功率電感器 - 引線式 的庫存、價格和資料表。
Dynamic Characteristic Data (PFC QN series) TDK has developed a high-performance ferrite material best suited for choke coils for PFC (Power Factor Correction) circuits. The standard range includes products with original core shape and sufficient DC overlay characteristics to meet miniaturization.
- The Need For Power Factor Correction (PFC) in AC/DC Power Supplies
- Harmonics and The Fourier Transform
- Power Factor
- What Is Power Factor Correction (PFC)?
- Summary
As discussed in our previous article, an AC/DC power supply is made up of several circuits that transform an input AC voltage into a stable DC voltage at the output. The most essential of these circuits is the rectifier, which is responsible for transforming the AC voltage into a DC voltage; however, this circuit alone is not enough to ensure adequ...
Most of the electric waveforms you have seen up to now are sine waves. However, waves often stop being purely sinusoidal, especially when reactive components (capacitors, inductors) or nonlinear components (transistors, diodes) are present. These waves are defined by different, often complex mathematical functions. This could make the analysis of t...
There are three types of AC power. The first is called active power, and is usually referred to as real power, or P. This represents the net energy that is transferred to a load. If the load is purely resistive, all power in the line is active power, and the voltage and current oscillate in phase with each other. Second, if the load is purely react...
Power factor correction (PFC) is a series of methods that manufacturers of electronic devices use to improve their power factor. As previously mentioned, a low power factor is caused by the presence of displacement or distortion in the signal. The negative effect of displacement on the power factor is relatively simple to solve, because capacitors ...
Power factor is a key element to take into account in the design of any electronic device, but especially in the case of AC/DC power supplies. However, the selection of the right PFC circuit means analyzing the different tradeoffs available. First, detect whether the origin of your low power factor is due to displacement or distortion. Then, depend...
How to Design an Efficient and Cost-Competitive Choke in PFC Applications.
其他人也問了
What are the benefits of PFC chokes?
What is the production of PFC chokes?
What is power factor correction (PFC)?
What is RF choke?
TDK开发了一种非常适合PFC（功率因数校正）电路扼流圈应用的高性能铁氧体材料。 为了满足各种电子设备的小型化、薄型化、占板面积最小化的要求，我们在标准产品阵容中增添了具有良好直流 叠加特性的原创磁铁芯形状产品。 这些产品设计支持自动化绕线生产，相比于传统产品结构，其通过轻微改动保证了稳定的生产交付。 新闻. 2023年8月25日 已公开游戏/周边设备应用指南。 2023年8月10日 已更新基础设施电源应用指南。 2023年7月3日 2023年7月3日 关于提供远程EMC测试服务的通知. 2023年4月3日 EMC测试服务: 修订了“电磁兼容检测”、“试验设备与试验内容”以及“收费表”的内容。 2023年1月6日 通知：“EMC测试服务取消政策”修订. RSS. All News. 首页.
產品搜尋方法. 網站地圖. PFC Choke 電感器、扼流圈和線圈 在Mouser Electronics有售。 Mouser提供PFC Choke 電感器、扼流圈和線圈 的庫存、價格和資料表。
