Imedence Bridge - diyAudio
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Old 16th February 2007, 09:25 PM   #1
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Join Date: Mar 2006
Location: Cowboy capital
Default Imedence Bridge

Has anyone build an impedence bridge to measure caps and coils?

I'm wondering if the bridge has to be symetric or if I can replace Z1, Z2 and Z3 with precisions resistors, Z4 with a cap or coil to be measured and vary the AC frequency. Once the bridge is balanced I could then calculate capacitance or inductance.

refer to this drawing and article:

Click the image to open in full size.

http://www.allaboutcircuits.com/vol_2/chpt_12/5.html
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