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Прекращаемставитьдиод Beyondthe diode
После прочтениястатьио защите электрических схемотнеправильной
полярностипитанияприпомощиполевоготранзистора,я вспомнил о том,что
давно имеюне решеннуюпроблемуавтоматического отключения
аккумулятораотзарядногоустройствапри обесточиваниипоследнего.
Afterreadinganarticle on protectingelectrical circuitsfromreverse
powersupplypolarityusingafield-effecttransistor(FET),Iremembered
my long-unsolvedproblemof automaticbatterydisconnectionfromthe
charger whenthe chargeris disconnectedfrompower.
И сталомне любопытно,нельзялиприменитьподобныйподходвдругом
случае,где тоже испоконвекав качестве запорногоэлементаиспользовался
диод.
So I wonderedif Icoulduse a similarapproachinanotherapplication
where a diode istraditionallyusedasa blockingcomponent.
Эта статья являетсятипичнымгайдом по велосипедостроению,т.к.
рассказываето разработке схемы,функционал которойуже давнореализованв
миллионах готовых устройств.
As such,thisarticle isa typical guide onhowto reinventthe wheel,asit
discussesthe designof acircuitwhose functionalityhaslongbeen
implementedinmillionsof existingdevices.
Поэтомупросьбане относится к данномуматериалу,какк чему-тосовсем
утилитарному.
Therefore,Iwouldsuggestthatyoudonot regardthismaterial as
somethingcompletelyutilitarian.
Скорее этопростоисторияо том,как рождаетсяэлектронное устройство:от
осознания необходимостидоработающегопрототипачерезвсе препятствия.
Indeed,itisjusta storyof howan electronicdevice isborn,startingfrom
recognizinganeedandthenworkingthroughall the obstaclestoa
functioningprototype.
При резервированиинизковольтногоисточникапитанияпостоянноготока
самый простойпутьвключениясвинцово-кислотногоаккумулятора–это в
качестве буфера,простопараллельносетевомуисточнику,какэтоделалосьв
автомобилях допоявленияуних сложных «мозгов».
The most basicway to provide abackupfor a low-voltage DCpower
supplyunit(PSU) usingalead-acidbatteryistoconnectthe batteryas a
buffer— that is,simplymake itparallel tothe off-linesupply,asitwas
done inautomobilesbefore theystartedgettingcomplex "brains".
Аккумулятор хотьиработаетвне самом оптимальномрежиме,новсегда
заряжени не требуеткакой-либосиловойкоммутацииприотключенииили
включениисетевогонапряжениянавходе БП.
While the batteryhere doesnotoperate optimally,itisalwayscharged
and requiresnopowerswitchingwhenthe linevoltage isappliedtoor
removedfromthe powersupplyinput.
Далее более подробноонекоторых проблемахтакоговключенияипопытке их
решить.
Belowisa more detaileddiscussionof some problemswiththis
connectiontype andseveral attemptsatsolvingthem.
Еще каких-то20 летназад подобныйвопросне стоял на повестке дня. Justtwo decadesago,thiswasnot an issue,
Причинойтому быласхемотехникатипичногосетевогоблокапитания(или
зарядного устройства),котораяпрепятствоваларазрядуаккумуляторанаего
выходные цепиприотключениисетевогонапряжения.
since the designof a typical off-line powersupplyunit(oracharger)
preventedthe batteryfromdischargingintothe device'soutputwhen
the line voltage isremoved.
Посмотримпростейшуюсхемублокасоднополупериоднымвыпрямлением: Considerabasic powersupplycircuitusingahalf-wave rectifier:
Совершенноочевидно,чтототже самый диод, которыйвыпрямляет
переменноенапряжениесетевойобмотки,будетпрепятствоватьиразряду
аккумуляторанавторичнуюобмоткутрансформатораприотключении
питающегонапряжениясети.
Clearly,the same diode thatrectifiesthe primaryACline voltagewill also
preventbatterydischarge intothe secondarywindingwhenthe line
voltage isdisconnected.
Двухполупериоднаямостоваясхемавыпрямителя,несмотрянанесколько
меньшуюочевидность,обладаетточнотакимиже свойствами.
A full-wave bridgerectifiercircuit,despitebeingslightlyless
straightforward,sharesthe same properties.
Source:https://geektimes.ru/post/280290/
Copyright© 2016 quwy@ Geektimes.ru
Courtesyof the author

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StopUsingDiode_RuEn

  • 1. Source Target Прекращаемставитьдиод Beyondthe diode После прочтениястатьио защите электрических схемотнеправильной полярностипитанияприпомощиполевоготранзистора,я вспомнил о том,что давно имеюне решеннуюпроблемуавтоматического отключения аккумулятораотзарядногоустройствапри обесточиваниипоследнего. Afterreadinganarticle on protectingelectrical circuitsfromreverse powersupplypolarityusingafield-effecttransistor(FET),Iremembered my long-unsolvedproblemof automaticbatterydisconnectionfromthe charger whenthe chargeris disconnectedfrompower. И сталомне любопытно,нельзялиприменитьподобныйподходвдругом случае,где тоже испоконвекав качестве запорногоэлементаиспользовался диод. So I wonderedif Icoulduse a similarapproachinanotherapplication where a diode istraditionallyusedasa blockingcomponent. Эта статья являетсятипичнымгайдом по велосипедостроению,т.к. рассказываето разработке схемы,функционал которойуже давнореализованв миллионах готовых устройств. As such,thisarticle isa typical guide onhowto reinventthe wheel,asit discussesthe designof acircuitwhose functionalityhaslongbeen implementedinmillionsof existingdevices. Поэтомупросьбане относится к данномуматериалу,какк чему-тосовсем утилитарному. Therefore,Iwouldsuggestthatyoudonot regardthismaterial as somethingcompletelyutilitarian. Скорее этопростоисторияо том,как рождаетсяэлектронное устройство:от осознания необходимостидоработающегопрототипачерезвсе препятствия. Indeed,itisjusta storyof howan electronicdevice isborn,startingfrom recognizinganeedandthenworkingthroughall the obstaclestoa functioningprototype. При резервированиинизковольтногоисточникапитанияпостоянноготока самый простойпутьвключениясвинцово-кислотногоаккумулятора–это в качестве буфера,простопараллельносетевомуисточнику,какэтоделалосьв автомобилях допоявленияуних сложных «мозгов». The most basicway to provide abackupfor a low-voltage DCpower supplyunit(PSU) usingalead-acidbatteryistoconnectthe batteryas a buffer— that is,simplymake itparallel tothe off-linesupply,asitwas done inautomobilesbefore theystartedgettingcomplex "brains". Аккумулятор хотьиработаетвне самом оптимальномрежиме,новсегда заряжени не требуеткакой-либосиловойкоммутацииприотключенииили включениисетевогонапряжениянавходе БП. While the batteryhere doesnotoperate optimally,itisalwayscharged and requiresnopowerswitchingwhenthe linevoltage isappliedtoor removedfromthe powersupplyinput. Далее более подробноонекоторых проблемахтакоговключенияипопытке их решить. Belowisa more detaileddiscussionof some problemswiththis connectiontype andseveral attemptsatsolvingthem. Еще каких-то20 летназад подобныйвопросне стоял на повестке дня. Justtwo decadesago,thiswasnot an issue, Причинойтому быласхемотехникатипичногосетевогоблокапитания(или зарядного устройства),котораяпрепятствоваларазрядуаккумуляторанаего выходные цепиприотключениисетевогонапряжения. since the designof a typical off-line powersupplyunit(oracharger) preventedthe batteryfromdischargingintothe device'soutputwhen the line voltage isremoved. Посмотримпростейшуюсхемублокасоднополупериоднымвыпрямлением: Considerabasic powersupplycircuitusingahalf-wave rectifier: Совершенноочевидно,чтототже самый диод, которыйвыпрямляет переменноенапряжениесетевойобмотки,будетпрепятствоватьиразряду аккумуляторанавторичнуюобмоткутрансформатораприотключении питающегонапряжениясети. Clearly,the same diode thatrectifiesthe primaryACline voltagewill also preventbatterydischarge intothe secondarywindingwhenthe line voltage isdisconnected. Двухполупериоднаямостоваясхемавыпрямителя,несмотрянанесколько меньшуюочевидность,обладаетточнотакимиже свойствами. A full-wave bridgerectifiercircuit,despitebeingslightlyless straightforward,sharesthe same properties. Source:https://geektimes.ru/post/280290/
  • 2. Copyright© 2016 quwy@ Geektimes.ru Courtesyof the author