MihaiGSM Posted March 27, 2007 Share Posted March 27, 2007 salutare! am si eu nevoie de echivalent la tranzistorul BD857 si regulatorul de tensiune KA7808. multumesc Link to comment
lalihifi Posted March 27, 2007 Share Posted March 27, 2007 Sal KA7808 : lm7808 de exemplu sau ceri un stabilizator de tensiune pozitiva de 8v si 1 amper. Link to comment
mircea888 Posted March 27, 2007 Share Posted March 27, 2007 La BD857 nu am gasit nimic despre el, in cazul asta nu stiu cum vei gasi echivalent. :smt005 Link to comment
niq_ro Posted March 28, 2007 Share Posted March 28, 2007 in ce aplicatie ai nevoie de acel BD? ca nici eu nu-l gasesc..dar daca ne dai schema sau macar ne spui aplicatia iti recomandam ceva inlocuitor Link to comment
MihaiGSM Posted March 28, 2007 Author Share Posted March 28, 2007 bd e intr-un stabilizator de tensiune cu tensiune de iesire de la 1,5 v la 12 v cu intrare maxima de la 24 v Link to comment
niq_ro Posted March 28, 2007 Share Posted March 28, 2007 ufff ufff... nu stiam ca te costa literele tastate... curentul nu puteai sa-l spui? daca vrajitoarea mea mai ghiceste bine, ar putea alege ca in schemele din fig.14, respectiv fig.15 din datasheet-ul de la http://www.fairchildsemi.com/ds/LM/LM7812.pdf si atunci ar fi un tranzistor pnp de medie-mare putere deci BD536, TIP42, etc Link to comment
MihaiGSM Posted March 28, 2007 Author Share Posted March 28, 2007 multumesc, o sa incerc cu un bd536 sa vad ce rezolv Link to comment
gelutu Posted March 29, 2007 Share Posted March 29, 2007 salutare! am si eu nevoie de echivalent la tranzistorul BD857 si regulatorul de tensiune KA7808. multumesc Sigur este vorba de "857". Nu cumva este"BD875" ? Link to comment
vsurducan Posted April 1, 2007 Share Posted April 1, 2007 Sau B857 care este de fapt 2SB857. Din astea sunt o gramada prin monitoare. Link to comment
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