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15th October 2005 22:19 #1
Ùå ñå ñìåíÿò êîíäåíçàòîðèòå íà 8RDA-òî
Äúíîòî âå÷å ñòàíà íà 2,5 ã. è êîíäåíçàòîðèòå â ïî-îòäàëå÷åíàòà ðåäèöà îò ïðîöåñîðà çàïî÷íàõà äà ñå íàäóâàò, êàòî äâà îò òÿõ ñà ïóñíàëè ëåêî åëåêòðîëèò îòãîðå... Òà ùå òðÿáâà äà ãè ñìåíÿì è èñêàì íîâèòå äà ñà ñâåñòíè. Âúïðîñà ìè å îò êîÿ ìàðêà äà òúðñÿ, ÷å íå ñúì çàïîçíàò ìíîãî ñ êà÷åñòâîòî ïðè ðàçëè÷íèòå ìàðêè êîíäåíçàòîðè?
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15th October 2005 22:35 #2
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15th October 2005 22:38 #3
[bg]W Konrad w Mladost 1 (onzi dylyg blok, deto e swyrzan s edin drug blok s ne]o kato tunel, tochno sled mosta sled pliska, posoka Okryvna bolnica) ima dosta dobri, byrzi kondenzatori. Az skoro wzimah ot tam i 5-6 brojki mi izleznaha 1-1.5[/bg]
EDIT: [bg]Opaa. Korekom. Praw si moq gre[ka. Nqma zna`enie. Ina`e za tozi to`no stawa duma.[/bg]Last edited by moridinbg; 17th October 2005 at 11:47.
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16th October 2005 01:08 #4Òîâà íå å ëè ÌÒ1 ÎÎÄ?
Originally Posted by moridinbg
æ.ê. Ìëàäîñò 1
áëîê 30, âõîä "Ä"
(áèâøèÿ ÊÎÐÅÊÎÌ)
http://www.mt1components.com/
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16th October 2005 12:58 #5
Ìåðñè çà èíôîòî. Àç ìàãàçèíè çíàåõ àìà íå ÷àê òîëêîâà
"Áúðçè êîíäåíçàòîðè" - òîâà ïúê êàêâî ùå å
Originally Posted by moridinbg
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16th October 2005 13:08 #6Low ESR (Equivalent Series Resistance) - êîíäåíçàòîðè, ïðåäíàçíà÷åíè çà ðàáîòà ïðè âèñîêè ÷åñòîòè.
Originally Posted by Vince
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17th October 2005 13:28 #7
Êîíäåíçàòîðè, ïðåäíàçíà÷åíè çà ðàáîòà ïðè âèñîêè ÷åñòîòè íÿìà. Êîíäåíçàòîðèòå èìàò êàïàöèòåò è ïðîáèâíî íàïðåæåíèå. Òåçè ñ ïî-ìàëúê êàïàöèòåò ïðîïóñêàò ïðåç ñåáå ñè ïî-âèñîêè ÷åñòîòè, íî òîâà íå çíà÷è, ÷å 3000 ìèêðîôàðàäà êîíäåíçàòîðèòå çà äúíàòà íè ìîæå äà ñà "âèñîêî÷åñòîòíè". Òàçè ñòîéíîñò å ìíîãî ãîëÿìà è ñàìî òîê ñ ìíîãî íèñêà ÷åñòîòà ìîæå äà ìèíå ïðåç òÿõ. îòäåëíî, ÷å òèÿ êîíäåíçàòîðè íà äúíîòî áè òðÿáâàëî äà ñà çà ñòàáèëèçèðàíå íà çàõðàíâàùîòî íàïðåæåíèå íà ïðîöåñîðà, êîåòî å ïîñòîÿííî âúîáùå íÿìàò âðúçêà ñ ÷åñòîòàòà ìó. Ñìåíåíèòå êîíäåíçàòîðè ñ òàêèâà ñ ïî-ãîëÿì êàïàöèòåò ìîãàò äà îñèãóðÿò ïî-ñòàáèëíî íàïðåæåíèå êúì ïðîöåñîðà è îòòàì ïî-âèñîêè ÷åñòîòè.
Equivalent Series Resistance çíà÷è åêâèâàëåíòíî ñúïðîòèâëåíèå íà êîíäåíçàòîðà. Òúé êàòî íå ñà èäåàëíè åëåìåíòè è òå ñè èìàò âúòðåøíî ñúïðîòèâëåíèå. Èìåòî èäâà îòòàì, ÷å êîíäåíçàòîðà ñå ðàçãëåæäà âñå åäíî èìà ñâúðçàí ðåçèñòîð ïîñëåäîâàòåëíî íà íåãî.
http://en.wikipedia.org/wiki/Equival...ies_resistance
http://powerelectronics.com/mag/powe...er_capacitors/
By definition, ESR is a performance characteristic representing the energy losses of the “equivalent” series resistance of a capacitor. It takes into account all of the losses — lead resistance, termination resistance and “plate” resistance, as well as the inherent losses of the dielectric material. It assumes that a single resistance in series with an “idealized” capacitor can represent all the losses.Àêî èìàì ãðåøêè - ïîïðàâÿéòå ìå.The equivalent series resistance (e.s.r.) is made up of several resistive components within the capacitor , including electrolyte, tissue separators, foils etc. The method of construction also plays an important role. For example, the e.s.r. can be significantly reduced in some cases by making multiple connections to the anode and cathode foils.
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17th October 2005 05:27 #8×åòîõ, ÷å íÿêàêúâ ðóñíàê îò overclockers.ru êàòî íå óñïÿë äà íàìåðè êîíäåíçàòîðè ñúñ ñúùèòå ñòîéíîñòè,ïîñòàâèë òàêèâà ñ ïî-âèñîêè ñòîéíîñòè. ðåçóëòàò íà òîâà äúíîòî ìó ïîñòèãàëî ïî-âèñîêè øèíè , íà ïî-íèñêè òåìïåðàòóðè.
Originally Posted by Vince
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17th October 2005 09:53 #9Registered User
Join Date: Apr:2004
Location: Ñîôèÿ
Posts: 222
Äà... Íå çíàì çà ïîâèøåíèòå ðåçóëòàòè, íî ñúñ ñèãóðíîñò ñúì ñè ñìåíÿë êîíäåíçàòîðè, êîèòî áÿõà 1000uF íà 6,3 V ñ 2200uF íà 10V è àêî íå äðóãî, òî äúíîòî çàïî÷íà äà ðàáîòè äîñòà ïî ñòàáèëíî. Ñòàâà âúïðîñ çà ïðåäè 2 ãîäèíè. Âñè÷êî òîâà å íàïúëíî ëîãè÷íî - ôàáðè÷íèòå êîíäåíçàòîðè ñà êîìïðîìèñ ìåæäó êàïàöèòåò è îáåì - àç íîâèòå êîíäåíçàòîðè ñ ðàçíè ìàãèè ãè ñëîæèõ, çàùîòî áÿõà äîñòà ïî-ãîëåìè îò ñòàðèòå.
Originally Posted by WARRIOR
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17th October 2005 13:29 #10Íå å áàø òàêà. Ôèëòðèðàùèòå êîíäåíçàòîðè ñà ñàìî çà òîâà - ôèëòðèðàíå, è çàìåíÿíåòî èì ñ ïî-ãîëÿì êàïàöèòåò ùå ïîìîãíå ñàìî àêî ñè ñ êîôòè çàõðàíâàíå è íåãîâèòå êîíäåíçàòîðè íå ñà äîñòàòú÷íî ãîëåìè. Àìà â òàêúâ ñëó÷àé å ïî äîáðå ïðîáëåìà äà ñå ðåøè îò èçâîðà êàêòî ñå êàçâà
Originally Posted by WARRIOR
Äàæå êàòî ñëîæèø ïî-ãîëåìè êîíäåíçàòîðè íà äúíîòî ïðè áóóò-âàíå èì òðÿáâà ïîâå÷å òîê çà äà ñå çàðåäÿò è òîêó âèæ íåùî ñå ïðåòîâàðèëî è èçãúðìÿëî




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