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webmaester

sursa de tensiune reglabila continuu help;;help;;

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Stai ca nu inteleg ce vrei?O sursa de tensiune variabila in curent continuu? Ce tensiune maxima vrei si cam ce curent maxim vrei sa ai? Cea mai simpla solutie e sa folosesti un lm317, schema de principiu o gasesti chiar in datasheetul sau.

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vezi:

- schema de la http://www.niqro.lx.ro/LM317.htm care utilizeaza un LM317 si tranzistoare externe pentru o tensiune intre 1,3-25V si un curent de iesire maxim de 3A

- schema de la http://www.niqro.lx.ro/alimentator.htm care este construita numai cu tranzistoare si are tensiunea de iesire de 1,35-40V la max.2A (s-a discutat despre ea la http://www.elforum.info/viewtopic.php?t=13622 )

 

PS: daca vrei sa ti se raspunda la obiect trebuie sa dai mai multe date: tensiunea ceruta la iesire, curent maxim, etc, iar daca citesti posturile de la aceasta categorie gasesti multe raspunsuri la intrebarile tale :yawinkle:

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