I've been reading Gary DeBock's writeups on building that excellent 7.5 inch Ferrite Bar Loopstick. Now that my PL 380 is in shipping from China I am wondering what type of Inductance Meter can be used or purchased to measure and verify the required 1900 uh inductance of the 122 turns of 100/44 Litz wire once its wound on the 7.5 inch Ferrite Bar?

I have 2 older Volt-ohm meters but none of them measure Inductance. There are several Inductance / Capacitance Meters listed on ebay but the Ranges I would need are not too clear. Any replies would be much appreciated.

Jerry

I've mentioned a decent LCR meter I've used, before on this list. Not many ULR folks are interested in measuring inductance, however.
The Chinese DM4070 model LCR meter works well; I've compared it with other much higher quality LCR meters and can recommend it.
This USA seller will get it to you quickly, and with free shipping.
eBay item 380282218601
73,
Steve

Found the DM 4070 on ebay, but unfortunately it looks like it only ships to USA but Not to Canada where I reside.

Jerry - read his description page further down. He ships to Canada for $8.

Steve



WEB - "The VE7SL Radio Notebook": http://members.shaw.ca/ve7sl

--- In ultralightdx@..., <ve7sl@...> wrote:

Found the DM 4070 on ebay, but unfortunately it looks like it only ships to
USA but Not to Canada where I reside.

Jerry - read his description page further down. He ships to Canada for $8.

Steve



WEB - "The VE7SL Radio Notebook": http://members.shaw.ca/ve7sl

Thanks Steve, found it. Hope it measures to 1700 uh. Local Fluke meters here are about $156.00.

--- In ultralightdx@..., <ve7sl@...> wrote:

Found the DM 4070 on ebay, but unfortunately it looks like it only ships to
USA but Not to Canada where I reside.

Jerry - read his description page further down. He ships to Canada for $8.

Steve



WEB - "The VE7SL Radio Notebook": http://members.shaw.ca/ve7sl

Steve, after a detailed look I'm not so sure that the DM 4070 will measure down to 2000 uh? The posted ranges for inductance are: 200 uh, 2 mh, 20 mh, 200 mh, 2h, and 20h. Do you know if the DM 4070 will in fact measure down to 2000 uh which is the range we need to measure the Inductance of 122 turns of Litz wire on a 7.5 inch Ferrite Rod?

Steve, after a detailed look I'm not so sure that the DM 4070 will measure down to 2000 uh? The posted ranges for inductance are: 200 uh, 2 mh, 20 mh, 200 mh, 2h, and 20h. Do you know if the DM 4070 will in fact measure down to 2000 uh which is the range we need to measure the Inductance of 122 turns of Litz wire on a 7.5 inch Ferrite Rod?

no problem Jerry....2000uH = 2.0mH so you could easily measure this on the second or third range (2mH or 20mH)

Steve


WEB - "The VE7SL Radio Notebook": http://members.shaw.ca/ve7sl

Op 19-07-11 22:13, Jerry Popiel schreef:

Steve, got the DM 4070 today - it took about 2 weeks. Only small problem
is those slippery alligator clips on the 2 Leads, its hard to clip them
on anything as they seem to always slide off your fingers. Otherwise all
is well. Thanks for your help & advice.

Last week I ordered from dindin16888/ebay

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemVersion&item=170646265604&view=all&tid=686106551007

more or les the cheapest, and I hope it takes not too much time.


Marc

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