On 6/26/19 11:21 AM, Daniel Kunkel wrote:
Nice! Did you find that the current was very erratic or was it stable? On Wed, Jun 26, 2019 at 1:00 PM Bert Hickman <bert@xxxxxxxxxxxxxxxxxxxxx> wrote:Hi Dan, That may be why the ammeter burned out... :) I didn't have a scope and wideband CT when I had the 6" coil. In fact, I didn't even know that wideband CT's even existed until years later... :) I did measure peak secondary base current with a Pearson wideband CT and Tek scope on a 10" coil a few years later. Base current pretty much matched theoretically-predicted current. This was long before the excellent simulation models and tools we have today. Then, all we had was basic TC theory, Conservation of Energy, and Excel spreadsheets. Comparing primary bang size versus secondary peak current, and then back-figuring peak secondary energy, I found that about 85% of the primary bang energy made it to the secondary during by the peak of the first ring-up when P:S coupling (k) was about 0.2. So in that sense, agreement was pretty good. Bert
Greg Leyh had measurements of streamer current from inside the topload of Electrum. There might also be base current measurements.
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