集成开关电源L4978

BG5CEH

集成开关电源L4978

<br/>

BG5CAW

为什么叫集成开关？

BG5CEH

<p><span style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: 宋体; LETTER-SPACING: 0.75pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3">开关电源就是用通过电路控制开关管进行高速的道通与截止．将直流电转化为高频率的交流电提供给变压器进行变压，从而产生所需要的一组或多组电压！转华为高频交流电的原因是高频交流在变压器变压电路中的效率要比５０ＨＺ高很多．所以开关变压器可以做的很小，而且工作时不是很热！！成本很低．</font></span></p><p><span style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: 宋体; LETTER-SPACING: 0.75pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3">把＂<span style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: 宋体; LETTER-SPACING: 0.75pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font size="3">开关电源＂做到一个<font color="#000000">集成块内，就叫＂集成开关电源＂</font></font></span></font></span></p>

[此贴子已经被作者于2007-2-11 14:31:56编辑过]