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樓主  發(fā)表于: 2023-11-19 07:49
  
 請問(wèn)各位專(zhuān)家，有沒(méi)有見(jiàn)過(guò)如下的電阻（個(gè)人感覺(jué)像是能耗電阻）是做什么用的？它是在五金制品的碰焊機上使用的，其電路原理是兩相380V電源經(jīng)過(guò)可控硅后給焊接變壓器通電開(kāi)始焊接，然后這個(gè)電阻是不是在焊接結束時(shí)給變壓器儲能釋放用的？誰(shuí)有見(jiàn)過(guò)類(lèi)似的應用？第二張圖電阻上標著(zhù)“PE220，500R”，個(gè)人感覺(jué)應該是功率220W，阻值500Ω吧？

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