 Problems measuring an inductor
|
|
|
Avi
|
|
Registered Member #580
Joined: Mon Mar 12 2007, 03:17PM
Location: Melbourne, Australia
Posts: 410
|
Good work with the helix. Do you know what was wrong the first time? No, I'm not sure, but its only the 2nd time I have tried the parallel resonance method.
As for the spiral coil, you didn't say it was a foil coil. I had interpreted the 2.5-mm primary thickness as an axial dimension (i.e. wire diameter) instead of the radial thickness of 11 turns. Is the 2.5-mm a measured value, so thickness per layer is about 1/11 of that? 2.5mm/11
Self-capacitance could be a significant contributor here. Have you done the frequency-swept amplitude measurement with no added capacitor? no but i would imagine it to be a function of impedance 3s the onboard 300 ohm
dimensions:
coil inner diameter: 16 cm
coil thickness: 2.5 mm
coil turns: 11
coil wire thickness: 0.227 mm
coil wire height: 7cm
|
|
Back to top
|
|
Moderator(s): Chris Russell, Noelle, Alex, Tesladownunder, Dave Marshall, Dave Billington, Bjørn, Steve Conner, Wolfram, Kizmo, Mads Barnkob
|
|
Powered by e107 Forum System
|
