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ELFORUM - Forumul electronistilor

Regulatoare liniare cu functia on/off pe iesire


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Păi și LM317 se poate comanda OFF prin aducerea pinului Adjust la potențialul masei (real 0,6V) prin șuntarea cu un tranzistor sau optocuplor.Ieșirea va scădea la 1,2V tensiune care nu mai permite practic funcționarea aparatelor ce necesită peste 5V.Am folosit varianta asta la comanda iluminatului CCFL într-un TV LCD.

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