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delusb

Verificare IGBT

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Buna ziua, cine poate sa-mi explice si mie cum se pot verifica modulele IGBT doar cu ajutorul multimetrului (nu detin osciloscop). Multumesc anticipat.

In prima faza masoara cu multimetru pus pe "diode" toate cele trei picioare, in mod normal aparatul nu trebuie sa indice nimic, altfel e strapuns.
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Pai daca ai circuitul, poti sa-ncerci sa le testezi cu multimetrul in locul osciloscopului, folosind semnale ceva mai "lente". Adica verifici ca daca pui tensiune suficienta pe poarta se deschide (ar trebui ca tensiunea colector-emitor sa fie mica) si daca pui masa pe poarta se blocheaza. Nu?

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