LED.MOV

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Uploaded by on Aug 1, 2011

Se attraversato da una corrente elettrica nel senso corretto, un LED (diodo ad emissione luminosa) si illumina; invertendo il senso della corrente (scambiando semplicemente il collegamento con i poli della batteria), come direbbe un mio stimatissimo e venerato professore... la faccenda non funziona.

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Science & Technology

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