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/37/1137860133.gif');}" onmousewheel="return imgzoom(this);">是电流反射造成电源电压上升吗?(图)
如下图所示,开关电源电压为4.99V,数传电台工作发射时会将电源电压拉低0.1V,而在发送或接收后电压能串到5.47V,还有另外一种情况是用蓄电池加12V-5V的DC TO DC开关电源,同样在收发数据动作后蓄电池端电压竟从12.86V上串到14.37V,不过两者都是瞬态电压,我想这比额定电压多出的瞬态浮动电压是不是因为电流的反射造成的?
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/37/1137860133.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/37/1137860133.gif');}" onmousewheel="return imgzoom(this);">