搜索 - 科创

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电子元件：1.高压包黑白电视机的5元2.10KΩ电阻2个3.12V稳压管2个4.470Ω4W电阻2个5.107二极管2个6.0.68UF250V电容一个输入电源用老古董，教学演示学生电源，不带滤波的，还需要自己加

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