Guest Boby Posted April 14, 2007 Share Posted April 14, 2007 Dar sa fie cu tranzistoare bipolare ajutati+ma va rog Link to comment
XAN77 Posted April 15, 2007 Share Posted April 15, 2007 pai intai fi complet in cererea ta, si anume ce fel de sursa ? coboratoare / ridicatoare de tensiune si de la ce la ce tensiune. Si de ce numai cu tranzistoare cat timp un TL494 sau un SG3525 sunt sub 2 lei, asta pentru partea de comanda. Link to comment
Guest Boby Posted April 15, 2007 Share Posted April 15, 2007 as dori o sursa coboratoare de la 220 volti Link to comment
Guest mister_rf Posted April 15, 2007 Share Posted April 15, 2007 Exista cateva topicuri care trateaza acest subiect: http://www.elforum.info/viewtopic.php?t=7596 http://www.elforum.info/viewtopic.php?t=9848 http://www.elforum.info/viewtopic.php?t=8637 citeste si afla cate ceva despre aceste surse in comutatie. Totusi cererea ta nu este completa. O sursa de la 220Vac la ce tensiune? Aici lipsesc datele esentiale: o tensiune si un curent maxim disponibil ... Link to comment
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