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/68/1686151218118971.gif');}" onmousewheel="return imgzoom(this);">半桥波形怎么了?
向各位高手请教:PC电源,494次级用推动变压器驱动,13009两管中间波形怎么会是这样呢?关断后那个正弦反电压是不是应该被吸收掉一点呀,现在次级-12V电压超高.头痛呀!可它和+12V同一挠组呀,而且现在要带+12V两倍载才可以认它稳在-12V左右.请各位大侠们多多指教呀!哪出问题了?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/68/1686151218118971.gif');}" onmousewheel="return imgzoom(this);">
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大侠们!看完中国1-1打平了新西兰了,请上电源网来给小弟看看这个波吧!再有这个波波是把戏-12V从+12V绕组拿掉后的,好像这个负电压是更厉害了呀,各位高人哪?帮帮忙吧!
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/68/1686151218120678.gif');}" onmousewheel="return imgzoom(this);">
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/68/1686151218120678.gif');}" onmousewheel="return imgzoom(this);"> 0
