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ELFORUM - Forumul Electronistilor
alin 105

lipsa eticheta in si out la traf electronic , cum il leg?

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Salutare,

 

Am cumparat petarda asta:

 

https://www.lohuis.ro/transformatoare/893-transformator-electronic-230v-12v-50w-5948668004563.html

 

Intrun capat al trafului ies patru fire: 2 negre si 2 albe,nu exista nici o eticheta , inscriptie care sa ma dumireasca care trebuie legat la 220 v si care este iesirea.Am o vaga banuiala ca firele albe sunt OUT-ul si cele negre sunt IN-ul, dart astept o parere avizata.Multumesc in avans

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Desfă carcasa și vezi ce fire intră într-o punte redresoare (patru diode 1N4007) și acolo este alimentarea la 230Vc.a.

Ieșirea de 12V este de pe secundarul unui mic transformator toroidal.

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daca suni firele albe intre ele ar trebui sa ai o rezistenta foarte mica si atunci sti ca sant firele de la secundar.

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La 12 V trebuie sa fie fire mai groase decat la 220.

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