📄 无标题文档.htm
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<TD bgColor=#cccccc colSpan=6> <FONT face=??ì? color=#0000ff
size=2> <A
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<TBODY>
<TR>
<TD width=152 background=无标题文档.files/temp-bgL.jpg height=558> </TD>
<TD width=628 background=无标题文档.files/dack5.gif>
<P class=unnamed1 align=center><FONT color=#00cccc
size=3><STRONG>用LM389制作的远程FM发射电路</STRONG></FONT><BR>下图为用美国国半的集成电路制作的一款远程无线发射电路,它配合良好的调频收音机可以发射1KM的距离,电路中的电感用直径0.50mm的漆包线绕成直径6mm的空心线圈,其中心抽头.具体是L1,L3均为6匝,中心抽头.
L2为3匝,中心抽头.其性能要比晶体管制作的电路较稳定.以下是实际制作的图片和电路原理图.爱好者可以自已动手制作.<BR><IMG
height=441 src="无标题文档.files/LM389-SCH.gif" width=472> </P></TD></TR>
<TR bgColor=#ffffff>
<TD colSpan=2><IMG height=20 src="无标题文档.files/bottom%20-L-bg.gif"
width=780></TD></TR>
<TR bgColor=#00ccff>
<TD colSpan=2>
<TABLE cellSpacing=0 cellPadding=0 width=780 border=0>
<TBODY>
<TR>
<TD> </TD></TR>
<TR bgColor=#cccccc>
<TD> <FONT color=#0033ff>All the copyrights ©2003
reserved</FONT></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE><!-- InstanceEndEditable --><!-- InstanceEnd --></BODY></HTML>
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