LCR Meter Basic Circuit Sample

Thread Starter

Engr

Joined Mar 17, 2010
114
Hi Guys. I was looking for a circuit that can measure inductance, capacitance and resistance. A basic or simplified circuit will do. If someone has a knowledge about this circuit, I need help on this one...Thanks
 

someonesdad

Joined Jul 7, 2009
1,583
You can look up the instruction manual for the GR 1650 impedance bridge; it has schematics in it for a manual measuring system. It used variations on the Wheatstone bridge.
 

marshallf3

Joined Jul 26, 2010
2,358
$25 will get you a good LC meter from eBay, look through my previous posts. A DMM can be as cheap as $2.99 from Harbor Freight when they put them on sale and it will even give you an approximate HFE of a transistor.
 

Thread Starter

Engr

Joined Mar 17, 2010
114
You can look up the instruction manual for the GR 1650 impedance bridge; it has schematics in it for a manual measuring system. It used variations on the Wheatstone bridge.
I was searching the internet for a copy of the manual but I only find a file containing the specs, not the manual. It would be great if you can send me a link to this manual....Thanks
 

jpanhalt

Joined Jan 18, 2008
11,087
Did you try Google?

From our own (shared of course) Dick Cappels (includes code):

http://cappels.org/dproj/nlglcm/Pretty Good LC Meter Project.html
http://cappels.org/dproj/EvenBetterLCMeter/Even_Better_LC_Meter.html

Commercial/Kits
http://electronics-diy.com/lc_meter.php
http://my.integritynet.com.au/purdic/lc-meter-project.htm
http://alfaelectronics.com/shop/product_info.php/cPath/27/products_id/54
http://www.elexp.com/tst_b810.htm
http://www.peakelec.co.uk/acatalog/jz_lcr40.html

The DIY kit apparently first appeared as a 16F84 based unit. Unfortunately the links I had were all "updated" to the commercial site that now lacks the source code as best I can tell.
I think I found the code here: http://ironbark.bendigo.latrobe.edu.au/~rice/lc/index2.html

John
 
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