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1、平板顯示器電源設計摘要隨著電力電子技術(shù)的高速發(fā)展，電力電子設備與人們?nèi)粘９ぷ魃盥?lián)系日益密切，而電子設備都離不開可靠的電源，進入80年代計算機電源全面實現(xiàn)了開關(guān)電源化，率先完成計算機的電源換代，進入90年代開關(guān)電源相繼進入各種控制設備電器、通訊設備領(lǐng)域，電子檢測設備等都已廣泛地使用了開關(guān)電源，更促進了開關(guān)電源技術(shù)的迅速發(fā)展。開關(guān)電源是利用現(xiàn)代電力電子技術(shù)，控制開關(guān)晶體管開通和關(guān)斷的時間比率，維持穩(wěn)定輸出電壓的一種電源，開關(guān)電源一般由開關(guān)器件（MOSFET、BJT等）構(gòu)成利用脈沖寬度調(diào)制（PWM）控制。開關(guān)電源和線性電源相比，二者的成本都隨著輸出
2、功率的增加而增長，但二者增長速率不同。隨著電力電子技術(shù)的發(fā)展和創(chuàng)新，開關(guān)電源技術(shù)在不斷地創(chuàng)新，使得低輸出電源成本下降，這為開關(guān)電源提供了廣泛的發(fā)展空間。開關(guān)電源的發(fā)展方向是高頻化，因為它使開關(guān)電源向小型化發(fā)展，并使開關(guān)電源進入更廣闊的應用領(lǐng)域，特別是在高新技術(shù)領(lǐng)域，從而推動了高新技術(shù)產(chǎn)品的小型化、輕便化。關(guān)鍵詞：開關(guān)電源，整流，自激式振蕩FlatpaneldisplaypowersupplydesignABSTRACTWiththerapiddevelopmentofpowerelectronics,powerelectronicsequipm
3、entandpeople'sdailyworklivesevercloser,andelectronicequipmentareinseparablefromthereliablepowersupply,computerpowerintothe80'sfullrealizationoftheswitchingpowersupplytechnology,thefirsttocompletethecomputer'spowergeneration,the1990shaveenteredintoavarietyofswitchingpowerelec
4、tronics,electricalappliances,communicationsdevices,electronictestingequipment,controlequipment,etc.havebeenwidelyusedswitchingpowersupply,butalsotopromotetherapiddevelopmentofswitchingpowersupplytechnology.Switchingpowersupplyistheuseofmodernpowerelectronicstechnology,contro
5、lswitchingtransistorturn-onandturn-offtimeratio,tomaintainastableoutputvoltageofapower,switchingpowersupplyswitchingdevicesgenerally(MOSFET,BJT,etc.)constitutetheuseofpulsewidthmodulation(PWM)control.Switchingandlinearpowercomparedtobothofthecostsareincreasedastheincreaseoft
6、heoutputpower,buttheygrowatdifferentrates.Withthedevelopmentofpowerelectronicstechnologyandinnovation,constantlyswitchingpowersupplytechnologyinnovation,makingthelowoutputpowercostsdown,whichistheswitchingpowersupplyprovidesabroadspacefordevelopment.Switchingpowersupplydevel
7、opmentinthedirectionofhigh-frequency,becauseitmakestheswitchingpowersupplytosmalldevelopmentandtoswitchpowertoenterawiderfieldofapplication,especiallyinhigh-techfields,therebypromotinghigh-techproductsofthesmall,lighter.KEYWORDS:SwitchingPowerSupply,BridgeRectifier,Self-exci
8、tation目 錄前 言1第1章開關(guān)電源基本原理21.1開關(guān)電源的組成與工作原理21.1.1開關(guān)電源工作原理21.1.2開關(guān)電源的構(gòu)成31.1.3開關(guān)
