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Едно бързо питане !

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 old4
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http://vbox7.com/play:a2a7f19f sb .


 
Posted : 17.03.2014 19:29
evgevg
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1)Черешарите трябва да се отличаваме! dnd
2)Изобщо не ме плашиш!Ракия и вино имам!Кафе и безалкохолно-също!И черешката е пуснала пъпки
, ама е малка още-не става за качване! dnd
Форум


Форум

 
Posted : 17.03.2014 19:36
Щирлиц
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И ти се изкалепса и вадиш компромати от моето посещение преди 5 години при теб . sb Пък на туй отгоре ти показвам и чалъм как се правят телевизори.Форум


Синджира си идва а козата я няма....

Форум

 
Posted : 17.03.2014 19:55
Форум
(@pamporov)
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Какъв е изгорелия елемент? Предполагам транзистор:

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Означенията му са DA/RS.


 
Posted : 17.03.2014 21:42
galiani
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Щом е маркиран с "Q" требе да е транзистор .На платката трябва да има още някой друг такъв измери с фазомера и ще разбереш какъв е.

DA BCW67A SGS N SOT23 pnp 32V 0.8A hfe 100 min

това излезе от някакъв каталог за СМД в нета


Никой не е по голям от хляба

 
Posted : 17.03.2014 21:48
evgevg
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Да не е BA/RS?


Форум

 
Posted : 17.03.2014 21:57
zapad
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2SC4919


 
Posted : 17.03.2014 22:04
Форум
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Както и да е, шибнах му един n-p-n транзистор и заспа. Обаче го товари драйвера на CD-то, та ще търся сега BA5810FP.


 
Posted : 17.03.2014 22:06
zapad
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Я, академиите да се по напънат и да кажат какво представлява това напрежение-7Vrms .това е максимален вход на честотомер


 
Posted : 17.03.2014 22:36
Noel
 Noel
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Най общо казано от пик до пик


"Ако не мога да го поправя значи не е развалено" но......живота крие изненади

 
Posted : 17.03.2014 22:39
vladimirstanoev
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Или по-точно за синусоида Vrms=0,7Vp-p dndf


 
Posted : 17.03.2014 22:47
Noel
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Да , но в конкретния случай според мен са казали че не бива да превишава 7 волта на входа. Иначе трудно се смята 0,7 от 7 волта.


"Ако не мога да го поправя значи не е развалено" но......живота крие изненади

 
Posted : 17.03.2014 22:48
zapad
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Горе-долу разбрах, че мога да меря синосуида около 5в


 
Posted : 17.03.2014 22:55
vladimirstanoev
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Що да се смята трудно, бре? 7Vrms=0,7.10Vp-p sbbsfd
ПП. Нищо не си разбрал Форум


 
Posted : 17.03.2014 23:10
DeepFish
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Горе-долу разбрах, че мога да меря синосуида около 5в

Едва ли ще мериш единствено СИНУСОИДА. За другите форми коефициентите са други.
По-важен е друг показател при честотомерите - входната чувствителност - аджеба колко най-малък сигнал ще ти хване. Затуй сложи сондата някъде в близост до разклонителя и виж дали ти показва 50 херца - ако да - уреда си заслужава уважението!


 
Posted : 17.03.2014 23:21
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