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Forum Elektroniczne • Zasilanie
Strona 1 z 1

Zasilanie

: pn 14 lis 2005, 0:00
autor: Artii
Potrzebuje zasilanie +12V;-12V;+5V

Czy jesli zrobie to wg schematu to bedzie ok?
Jakie wartosci kondensatorow dobrac aby bylo dobrze?
Czy ten transformator bedzie dobry? TS 2/44 (14V)

: pn 14 lis 2005, 1:43
autor: PI
Witam; taki zasilacz najprosciej wygląda tak:

: pn 14 lis 2005, 10:29
autor: Artii
A czy z tego mojego trafo da rade zrobic cos takiego?

Bo to jest TS 2/44 (czyli 2x7V) ?
Chodzi mi o ta mase bo ona chyba nie bedzie na srodku jak na schem.

Sorki za glupie pytanie :lol:

: wt 15 lis 2005, 0:54
autor: PI
Witam; układ, który przedstawiłem wymaga trafa o symetrycznym uzwojeniu wtórnym 2x12V co najmniej, aby ten zasilacz mógł działac prawidłowo. Na schemacie Kolegi jest kilka drobnych błędów, poza tym tak, czy inaczej z 2x7V nie da sie zrobic +/- 12V. Napiecie przed stabilizatorami musi byc o kilka woltów wyzsze, niz napięcie znamionowe tych stabilizatorów. Trafo TS2/44 to tylko 2VA mocy, zatem można je obciążyc zaledwie ok 0,2A. Czy to napewno tak ma byc?
PI

: wt 15 lis 2005, 17:33
autor: zolty
Robiłem taki zasilacz to przetwornika c/a audio. Moj miał +-9V i 5V. Schemat w zalaczniku.

: czw 17 lis 2005, 12:47
autor: Artii
Moglby mi ktos napisac jaki musze kupic transformator? (2x14V bedzie ok?) Moze ktos zna tym takiego zasilacza?

Dodam ze prady nie musza bys duze bo +12V/60mA, +5V/10mA, -12V/20mA

: czw 17 lis 2005, 21:09
autor: movzx
Chociazby TS6/47 Indela... 15V/0,25A
Zreszta proponuje przejsc sie do najblizszego sklepu elektrycznego/elektronicznego - takie transformatory sa dostepne w bardzo wielu miejscach - niekoniecznie taki jak napisalem.
Pozdr.

: pt 18 lis 2005, 0:55
autor: PI

: sob 19 lis 2005, 15:10
autor: Gość

: pn 12 gru 2005, 1:02
autor: Artii

: pn 12 gru 2005, 22:52
autor: movzx

: śr 28 gru 2005, 12:39
autor: Artii

: czw 29 gru 2005, 20:14
autor: PI
Witam; to bez znaczenia, a dioda Zenera jest tu bez sensu. Wiadomo, że takie seryjne stabilizatory nie są zbyt precyzyjne - nie ma to prawdopodobnie zadnego znaczenia w układzie. Jeżeli jednak, to mozna zastosować np. LM317 (dodatnie) i LM337 (ujemny) i dokładnie, przy pomocy pot. montażowych ustawic napiecia.
PI

: pn 02 sty 2006, 20:46
autor: movzx

: pn 02 sty 2006, 22:33
autor: Artii

: wt 03 sty 2006, 1:11
autor: PI

: wt 03 sty 2006, 21:03
autor: movzx

: sob 07 sty 2006, 12:18
autor: andriusza
"zolty" najpierw naucz się rysować schematy, zanim zaczniesz je tu zamieszczać! Czy słyszałeś o czymć takim jak skrzyżowanie przewodów i punkt połączeniowy? U ciebie widać, że to wszystko wsio ryba! Dla ciebie nie ma to znaczenia czy postawisz punkt, czy też nie. Niech wieśniaki się domyślą! :twisted:

: ndz 08 sty 2006, 0:04
autor: movzx
O tym byla juz mowa, andriusza... nie musisz tego powtarzac, chyba ze bardzo nie masz nic innego do powiedzenia :>
Pozdr.

: ndz 08 sty 2006, 2:28
autor: K.B
Te zasilacze na stabilizatorach są banalnie proste w złożeniu i ja bym sobie nawet bez schematu poradził :wink: , a szczerze mówiąc to wolałbym się pobawić trochę scalakiem LA5617 bo to jest jakiś scalony stabilizator napięć +7,5V i -7,5V w 1 układzie :wink:

zasiłka

: pt 12 maja 2006, 10:12
autor: 4064484