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zasilanie diody nadawczej IR napieciem ujemnym? - Forum Elektroniczne

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zasilanie diody nadawczej IR napieciem ujemnym?

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kisiel20
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zasilanie diody nadawczej IR napieciem ujemnym?

Postautor: kisiel20 » wt 27 sty 2009, 21:20

Witam. Mam pytanie dotyczące zasilania diody IR gdyż nie jestem aż tak biegły w elektronice. Mam taki schemat jak w załączniku. Jest to enkoder do galv. Z tego schematu wynika że dioda IR zasilana jest napięciem ujemnym (katoda idzie do masy)czy to jest prawidłowy montaż?Czy można diodę IR (nadawczą) zasilić napięciem ujemnym?(dokładnie -15 V)(jest do tego wykorzystane napięcie stabilizowane).Jakie wartości mogą być rezystorów (2szt przed anodą) i(1szt za katodą)diody nadawczej IR? Rozumiem również że katoda fotodiod odbiorczych idzie do TL084 a anoda do zasilania -15V. Czekam na Waszą pomoc.
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Postautor: TanTan » wt 27 sty 2009, 21:38

Zajrzałem w załącznik ale nie mogę sie tam doszukać schematu, jest co prawda rysunek płytki i troche tulejek ale podejrzewam że nie ułatwi on w ocenie sytuacji komuś kto mógłby pomóc
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Postautor: kisiel20 » wt 27 sty 2009, 22:24

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Postautor: ^Target » śr 28 sty 2009, 2:47

chciałeś zrobić wzmacniacz, a wyszedł jak zwykle ... mieszacz :/

"Eksperci nie mają monopolu na dobre rady" - Bob Pease
nie jestem żadnym specjalistą
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Postautor: kisiel20 » czw 29 sty 2009, 21:13

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