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Guest ppd83

Multiplexor 74hc4052 - tensiune indusa?

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Guest ppd83

Va salut.Am o mica nedumirire/problema cu multiplexorul analogic hc4052. Scenariul: Am doi senzori de presiune (elemente piezo). Pe unul il conectez la intrarea 1Y0 a multiplexorului iar pe celalalt la intrarea 1Y1. Indiferent daca circuitul este alimentat sau nu, in momentul in care actionez senzorul conectat la 1Y0 imi apare o tensiune (indusa?) si pe 1Y1. La fel si invers (actionez senzorul conectat la 1Y1 si apare tensiune si pe 1Y0). Tensiunile sunt de ordinul voltilor.Problema asta nu apare si la hc4053...Aveti idee ce poate fi?Multumesc.

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