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Guest vasilesas

indicator stare baterie 12v

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Guest vasilesas

Buna ziua,

 

Am nevoie de un indicator cu leduri care sa imi arate cand bateria e fie slaba, de la 13v in jos, fie prea incarcata, de la 15 v in sus.(e vorba de tensiunea la bornele bateriei cand merge motorul pt ca in repaos, 12,7v e bine). Am construit schema de aici:

 

http://freecircuitdiagram.com/2010/06/1 ... y-monitor/

 

Functioneaza cum spun ei: ledul verde se aprinde la peste 13v si cel galben intre 11 - 13v. Cum anume trebuie sa o modific ca sa mi se aprinda ledul verde (pe care am sa il pun rosu) de la 15v in sus? Pastrez ledul galben care functioneaza in intervalul 11-13v.

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Guest vasilesas

AM reusit sa fac sa imi indice tensiunile dorite : ledul rosu se aprinde sub 13v iar cel verde la peste 15v.Am incercat cu mai multe diode. Multumesc de sfat.

 

Acum as vrea sa folosesc un led bicolor pentru a inlocui cele doua leduri. Am leduri cu catodul comun:

 

http://www.muzique.com/news/images/bicolor2.gif

 

Cum fac sa il pot pune in circuit ?

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