<TABLE class=messageheader cellSpacing=0 cellPadding=0 width="100%" border=0>
<TBODY>
<TR>
<TD class=label noWrap>수신:</TD>
<TD>RookCoils@yahoogroups.com</TD></TR>
<TR>
<TD class=label noWrap>발신:</TD>
<TD><A href="http://messenger.yahoo.com/messenger/download/index.html" target=_blank>
<IMG height=12 alt="Send an Instant Message" src="https://img1.daumcdn.net/relay/cafe/original/?fname=http%3A%2F%2Fmail.opi.yahoo.com%2Fonline%3Fu%3Dcasper195200%26m%3Dg%26t%3D0" width=12 border=0></A> "Bill Hebbert" <casper195200@yahoo.com> <A href="xxxxxxjavascript:document.frmAddAddrs.submit()">
<IMG height=16 alt="주소록에 추가" hspace=2 src="https://img1.daumcdn.net/relay/cafe/original/?fname=http%3A%2F%2Fus.i1.yimg.com%2Fus.yimg.com%2Fi%2Fus%2Fpim%2Fel%2Fabook_add_1.gif" width=16 align=top border=0><FONT color=#003399>주소록에 추가</FONT></A><BR><SPAN style="COLOR: #999999">야후! 도메인키는, 이 메세지가 다음 도메인으로 부터 보내진것을 입증합니다 : yahoogroups.com. <A href="xxxxxxjavascript:Help('http://help.yahoo.com/help/kr/mail/context/context-101.html')"><FONT color=#003399>자세히 보기</FONT></A></SPAN></TD></TR>
<TR>
<TD class=label noWrap>날짜:</TD>
<TD>Wed, 13 Jul 2005 14:36:53 -0000</TD></TR>
<TR>
<TD class=label noWrap>제목:</TD>
<TD>[RookCoils] Re: Q-meter..incredible... 1000 of Q</TD></TR></TBODY></TABLE><XFORM name="frmAddAddrs" method="post" action="http://address.mail.yahoo.com/yab/kr?v=YM&.rand=35156&A=m&simp=1">
<P><INPUT type=hidden value=Bill name=fn> <INPUT type=hidden value=Hebbert name=ln> <INPUT type=hidden value=casper195200@yahoo.com name=e> <INPUT type=hidden value=http://kr.f700.mail.yahoo.com/ym/ShowLetter?MsgId=7696_1505354_185974_2878_1161_0_5382_2427_21989315&order=down&inc=&sort=date&view=a&head=b&box=Inbox&YY=68870 name=.done></P>
<P><TT><FONT face=굴림>Park,</FONT></TT><TT><FONT face=굴림></P>
<DIV> </DIV>
<DIV>Yes, Rooks are a bit higher (maybe 10-15%) than a solenoid coil. And <BR>they are removable from the form and look cool.<BR><BR>I have an HP Q meter and it measures Q directly up to 1000. I think <BR>the Boonton Q meter models often go up to 600 and the old Heathkit Q <BR>meters measure up to 300 (as I remember).<BR><BR>In order to measure coils above 1000 Q with an HP, we add a resistor in <BR>series with the coil. Then I do a bunch of computational work to <BR>extrapolate a reading above 1000. My best high strand count litz coils <BR>have been around 1300 Q.<BR><BR>The little Heathkit Q meter is quite inexpensive on ebay ($25). It <BR>might use this resistor technique on regular magnet wire for coils of <BR>400 Q. The Boonton could be used on litz coils but the HP seems to be <BR>the best for over 1000 Q readings. HPs sell for hundreds of dollars on <BR>ebay.<BR><BR>I really like using my Q meter. It is close to real research. I think <BR>you could learn a lot about coil design with a $25 Heathkit meeter and <BR>then look at a bigger unit for litz later. <BR><BR>Good luck on your hunt for a meter.<BR><BR>Bill<BR><BR>> And Would you explain for more detailly informations about Q-Meter?<BR>> I don't know about like a HP Q-Meter.<BR>> ..like mesurement range etc.. </FONT></TT></DIV>
<!-- -->
