500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/67/2080591215576628.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);">一个555做的升压电路,请大家帮我分析一下,谢谢
一个12V升压到600V的电路,变压器有杂音.请大家帮看看
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小功率的升压用34063岂不是更好,成本和稳定性多不错.
371451224222498.pdf
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371451224222498.pdf
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