本文選題：浪涌 + 開關電源��； 參考：《蘇州大學》2014年碩士論文

【摘要】：當今，電子產品已在通訊、計算機、家電、航空等領域獲得了廣泛應用。為適應電子產品的應用要求，對電子產品的電源性能要求有很高的要求。當電源輸出端超過額定負載或短路時，會對電源造成一定的損壞，使產品系統無法正常工作。浪涌也叫突波，顧名思義就是超出正常工作電壓的瞬間過電壓。本質上講，浪涌是發(fā)生在僅僅幾百萬分之一秒時間內的一種劇烈脈沖。因此增_7開關電源浪涌電流的保護電路研究，可以增_7電子產品功能的可靠度，功能穩(wěn)定性。 本文首先介紹了浪涌電流的發(fā)生原因，分析了浪涌電流的所產生危害。電子產品的開關電源電路工作在高壓和開關電源同時也工作在大電流狀態(tài)下，并且受到浪涌電流的威脅，晶體管和集成電路耐受電、熱沖擊的能力較差，在使用過程中給用戶帶來很大的不便。為了保護開關電源自身和負載的安全，根據開關電源的原理和特點，提出了過熱保護，過電流保護，過電壓保護以及軟啟動保護電路等保護電路。 本文利用開關電路保護原理，對產品應用電路的原理分析，，信號檢測以及實驗數據的驗證，通過對產品電路上濾波移除優(yōu)化使開關電路免受浪涌電流沖擊起到對產品的保護作用。這樣延長電子產品的使用壽命年限，降低產品的維護成本來提高用戶的使用安全和用戶的滿意。
[Abstract]:Today, electronic products have been widely used in communication, computer, home appliances, aviation and other fields. In order to meet the application requirements of electronic products, the power supply performance requirements of electronic products are very high. When the output end of the power supply exceeds the rated load or short circuit, it will cause certain damage to the power supply and make the product system unable to work properly. Surges are also called sudden waves. As the name implies, they are instantaneous overvoltages that exceed normal operating voltages. Essentially, a surge is a violent pulse that occurs in just a few millionths of a second. Therefore, the research of surge current protection circuit can increase the reliability and function stability of the Snap7 electronic products. In this paper, the cause of surge current is introduced, and the harm of surge current is analyzed. Switching power supply circuits of electronic products work in high voltage and switching power supply at the same time in high current state, and are threatened by surge current. Transistors and integrated circuits have poor resistance to electricity and heat shock. In the use of the process to the user caused great inconvenience. In order to protect the safety of switching power supply itself and load, according to the principle and characteristics of switching power supply, the protection circuits such as overheat protection, over-current protection, over-voltage protection and soft start protection circuit are put forward. Based on the principle of switch circuit protection, this paper analyzes the principle of the product application circuit, the signal detection and the verification of the experimental data. The switching circuit is protected from the surge current by the filter removal from the product circuit. In this way, the service life of electronic products is prolonged and the maintenance cost is reduced to improve the safety and satisfaction of users.
【學位授予單位】：蘇州大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM773

【參考文獻】

相關期刊論文 前2條

1 尹令;張麗霞;夏s

本文編號：1783200