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danutzu

invertor sudura

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Buna seara,as dorii sa inreb daca detine cineva o schema de la un invertor de sudura model TELWIN FORCE 145 sa pot sa vad ce integrat foloseste pentru formarea de impulsuri la comanda partii finale adica fet-ul care lucra cu traful din grilele finalilor,nu pot distinge ce scrie pe el si semnificatia pinilor, are doar 8 pini.Aparatul mai are un integrat LM324 4 operationale intr-o capsula smd si celalalt tot smd este.Aparatul are doua led-uri unul verde care palpaie si unul galben care este eprins tot timpul nu reusesc sa imi dau seama de ce nu pot obtine o tensiune de alimentare corespunzatoare pe intrarea LM7815 care ar trebui sa fie de 24v sa imi alimenteze releul de pornire si culerul

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E foarte probabil ca integratul mic sa fie un microcontroler ieftin, de exemplu PIC 12F675, programat sa dea impulsurile necesare.

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