| Electronics > Projects, Designs, and Technical Stuff |
| Measuring inductance-LCR meter,Bridge or DMM adaptor? |
| (1/2) > >> |
| djsb:
Hi, Does anyone have any ideas for a simple but accurate way of measuring coil inductance? Is there a circuit I can build that can work with a multimeter? Thanks. David. |
| rossmoffett:
There are DIY circuits around if you search, I just bought a $20USD LCR meter from eBay a couple of years ago. There are several circuits you could build that you could measure with your meter, they're basically LCR meters with no display. :) |
| Zad:
It depends on how many you have to do, how precise you want it, and the approximate value. If you have an oscilloscope, make a parallel resonant circuit with a known capacitor, pulse a low voltage across it and measure the frequency of the sine wave it produces. f=1/(2*pi* sqrt (L*C) ) and rearrange to get the value of L. |
| joelby:
There are plenty of standalone LC meter kits around - you could probably build you own from spare bits. Here's one available in kit form, but the page also has information on the calculations involved: http://www.rfcandy.biz/communication/imp_lc.html |
| Rowland:
Take a look at the ALMOST ALL DIGITAL ELECTRONICS (AADE) website. The L/C IIb meter http://www.aade.com/ I have had my meter for the last 10 years and it is invaluable. Neil has a lot of data about the kit on the site. The kit is full, in that it comes with an enclosure and can easily be built in an evening Regards Rowland |
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