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Old 10-25-2009, 11:26 AM   #2499 (permalink)
MPaulHolmes's Avatar
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Location: Maricopa, AZ (sort of. Actually outside of town)
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Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
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I used an "ultrafast rectifier diode" and a cap with a very low ESR. The cap would definitely catch the electrons in the very fast transient spikes. And the good thing is, the capacitor stays charged, since it's so big. So it lets energy in, but basically doesn't let it out.

It's like a crab trap. The electrons get pushed by the higher voltage past the diode and into the cap, and then they say "Wait! I don't want to live inside a capacitor!" So they attempt to leave, but the diode won't let them go back. hehe. I love getting crab. I'm allergic to it though, but it's super fun to pull up the rope and make guesses as to how heavy it is, and then flip it into the boat before any of them fall out. I hate it when a big star fish hogged all the crab bait.

Oops, the "positive fake electrons get pushed past the diode" hehe. Stupid +/-!

Hey we can use this to find out the "stray inductance". I was just reading about it:

V_overshoot = L_stray * Di/Dt

So we can know Di/Dt without any trouble. Just look at the waveform on the oscilloscope. We can easily find V_overshoot, so then we can find L_stray!
kits and boards

Last edited by MPaulHolmes; 10-25-2009 at 11:38 AM..
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