Measuring a choke you just wound
Started by unknown · · 3 posts
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Chris Bake here
#1 ·
Before it goes anywhere near the cell: inductance at 1 kHz, DC resistance, and a sweep for the self-resonant point. If the SRF is inside the band you plan to drive, you have wound a capacitor, not a choke.
Numbers from my last three, for comparison, in the next post.
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Dave Renwick here
#2 ·
What are you using for the sweep — a proper analyser, or a sig gen and a scope?
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Chris Bake here
#3 ·
Sig gen and a scope, with a 10 Ω sense resistor. It is good enough to find the SRF within a few percent. The analyser is on the wish list.
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