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Сварочный аппарат ТИТАН МММ250

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Не могу достать схему , На ножках микросхемы uc3846   11 и 14 нету прямоугольные импульсы  а на ножках 1 и 16 - 0 вольт , не могу знать от каго  идет напряжение на 1 и 16 ножек. Прошу помогать.

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Скачай даташит на эту микруху и посмотри ее типовую схему включения, на сварочнике она будет примерно такая же.

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