Acima, o transformador toroidal usado como filtro. Veja que os dois enrolamentos já estão separados. Abaixo o filtro em uma fonte de impressora matricial Epson.
Desde 1926
Acima, o transformador toroidal usado como filtro. Veja que os dois enrolamentos já estão separados. Abaixo o filtro em uma fonte de impressora matricial Epson.
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