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incarcator 8 celule de la 12 volti


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Guest hash84

am facut schema cu un lm 317, dar cand packul de 8 celule sare de 10 volti curentul de incarcare scade aproape de 0....si nu mai incarca. ma poate ajuta cineva?trebuia sa am curent constant... imi trebuie tensiune mai mare? vreau neaparat sa incarc de la o baterie de mashina

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da, asa se intampla normal.Daca te uiti in datasheetul lui LM317 o sa vezi ca are nevoie de o cadere minima de tensiune de 3V. Deci alimentat de la 12V nu prea are cum sa scoata mai mult de 9V la functionare normala.iar pt incarcarea a 8 celule ai neoie de 8*1.4=11.2VAr trebui sa folosesti fie un regulator cu cadere de tensiune mica(low drop) fie o sursa de curent constant in comutatie. Ce sa iti recomand exact nu stiu, dar te poate ajuta altcineva sau sa cauti pe internet.

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