N5ESE’s RF Inductance Meter
N5ESE writes:I’m always looking for cheap and simple ways to accomplish tricky tasks. As an RF homebrewer, I frequently wish I had a way to reliably measure inductors I wind for projects. Most of my homebrew projects are in the HF range, that is, 3- 30 MHz. Most commercial inductance meters, however, use low frequencies (less than 100 KHz) to measure unknown inductances. This is probably adequate for air-wound coils, but as many have found out the hard way, not too accurate for toroidal-wound or slug-tuned inductors designed for RF. The effective permeability of these core materials are optimized for RF frequencies, and don’t respond the same when low frequencies are applied to them.
| N5ESE’s RF Inductance Meter Visit N5ESE’s RF Inductance Meter website www.io.com |
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