Wanted: Inductance meter, inductors.

Spasticteapot · 28th October 2007, 08:05 PM

I'm looking for an inductance meter so that I can make my own inductors. Anyone got them?

I also need inductors of the following values:
0.4mH
1.5mH

john65b · 29th October 2007, 04:45 AM

Go to APEX jr - they has a nice L-C meter that is cheap - $50 I think...

Nordic · 29th October 2007, 07:19 AM

If its not too urgent, I plan to release an inductor-meter kit over the next month or so. Should be well south of $50. It also measures capacitance up to about 800nf when it hits the math limit of the PIC. Accuracy, +-1%

es44 · 29th October 2007, 07:33 AM

Quote:

Originally posted by Nordic
If its not too urgent, I plan to release an inductor-meter kit over the next month or so. Should be well south of $50. It also measures capacitance up to about 800nf when it hits the math limit of the PIC. Accuracy, +-1%

Hi Nordic.

Looking forward to that kit. I guess a lot of people could use en LC-meter

Have a nice day
Ebbe

Geek · 29th October 2007, 08:41 AM

Hi,

If the inductors are for crossovers, until you get your meter, this calculator is rather accurate I've found:

http://geek.scorpiorising.ca/calculator.html

Cheers!

es44 · 29th October 2007, 02:11 PM

Thanks a lot Geek.

But it's also for unknown inductors. I'm messing a bit with HF/VHF equipment too, and sometimes it would be nice to know if one of the coils just laying around can be of any use.

Best regards
Ebbe

Geek · 30th October 2007, 01:24 AM

Hi Ebbe,

Quote:

Originally posted by es44
... I'm messing a bit with HF/VHF equipment too, and sometimes it would be nice to know if one of the coils just laying around can be of any use.

For VHF inductors, I found a dip-meter with the unknown coil shunted by a known value cap to be most accurate. Even the most expensive digital L/C meters seen to tank in accuracy with values below 1uH or so.

Cheers!

Conrad Hoffman · 30th October 2007, 01:41 AM

Geek's method is also fine for audio. Just use a meter and signal generator and resonate the inductor with a known cap, like a 1% silver mica.

Geek · 30th October 2007, 04:30 AM

Hi Conrad,

Quote:

Originally posted by Conrad Hoffman
Geek's method is also fine for audio. Just use a meter and signal generator and resonate the inductor with a known cap, like a 1% silver mica.

You speak of the choke method on this page?
http://geek.scorpiorising.ca/windingchokes.html

Cheers!

Elvee · 30th October 2007, 12:49 PM

Quote:

Originally posted by es44
Thanks a lot Geek.
But it's also for unknown inductors. I'm messing a bit with HF/VHF equipment too, and sometimes it would be nice to know if one of the coils just laying around can be of any use.

Best regards
Ebbe

You can find a simple multimeter inductance add-on here:
http://forums.futura-sciences.com/post1035173-2.html
It isn't very accurate, but it's simple and cheap, and is suitable for for VHF coils <1µH.
LV

28th October 2007, 08:05 PM	#1
Spasticteapot diyAudio Member Join Date: Jan 2006 Location: Wisconsin....what did you expect?	Wanted: Inductance meter, inductors. I'm looking for an inductance meter so that I can make my own inductors. Anyone got them? I also need inductors of the following values: 0.4mH 1.5mH

29th October 2007, 04:45 AM	#2
john65b diyAudio Member Join Date: Jan 2005 Location: Chicago	Go to APEX jr - they has a nice L-C meter that is cheap - $50 I think... __________________ Pillage Before You Burn.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
inductance meter from a cheap meter?	jarthel	Parts	3	22nd September 2006 06:37 AM
Inductance Meter	gmilitano	Multi-Way	15	3rd October 2004 08:53 PM
High inductance inductors	GuitarDan	Parts	7	27th April 2003 12:53 PM
Inductance Meter	RobPhill33	Equipment & Tools	4	29th March 2003 08:45 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

29th October 2007, 07:19 AM	#3
Nordic diyAudio Member Join Date: Sep 2005	If its not too urgent, I plan to release an inductor-meter kit over the next month or so. Should be well south of $50. It also measures capacitance up to about 800nf when it hits the math limit of the PIC. Accuracy, +-1%

29th October 2007, 08:41 AM	#5
Geek diyAudio Member Join Date: Sep 2004	Hi, If the inductors are for crossovers, until you get your meter, this calculator is rather accurate I've found: http://geek.scorpiorising.ca/calculator.html Cheers!

29th October 2007, 02:11 PM	#6
es44 diyAudio Member Join Date: Apr 2005 Location: Fredericia, DK	Thanks a lot Geek. But it's also for unknown inductors. I'm messing a bit with HF/VHF equipment too, and sometimes it would be nice to know if one of the coils just laying around can be of any use. Best regards Ebbe

30th October 2007, 01:41 AM	#8
Conrad Hoffman diyAudio Member Join Date: Mar 2007 Location: Canandaigua, NY USA	Geek's method is also fine for audio. Just use a meter and signal generator and resonate the inductor with a known cap, like a 1% silver mica.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)