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csongore

Probleme cu afisaje IV-22

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Buna! am luat niste afisaje IV-22(VDF) NOS am aplicat tensiune de filament 1.2V intre pinul 12 si 5 si am aplicat o tensiune continua de 25V dar lumineaza slab stiti cumva de ce ?

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Probabil ai lasat grila de comanda in aer...

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Probleme apar daca vreti sa inseriati mai multi digiti si sa alimentati din aceeasi sursa... pot aparea diferente de luminozitate datorita tensiunilor diferite, primul tub are 25-1.25, ultimul va avea 25-1.25*nr.tuburi

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Am gasit o metoda interesanta de alimentare a filamentelor(curent alternativ?) :freaza:

post-11727-139829785357_thumb.jpg

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