Hi Dan,Many years ago, I tried using an older thermocouple type RF ammeter (that I got at a hamfest) in series with the secondary base ground circuit in a 6" coil. As I recall, it was a 0-5A unit. It worked quite well at lower power levels, but I accidentally burned it out when trying to run it at slightly higher power levels. The resistance/heating element in the meter apparently was a bit fragile, particularly when trying to handle the high-current peaks from a spark-gap TC. YMMV...
I had much better success using a wideband current transformer and oscilloscope.
Bert Daniel Kunkel wrote:
Hello list, I have been thinking about using a current meter to monitor the base current of the secondary coil, mainly as a tuning aid. It appears there are HAM radio guys that use RF ammeters, and there are even plans to build your own, however, I wonder how accurate it would be (due to dirty EMI and irregular current draw)? Has anyone tried this? Or is there a better way to ensure the tune is spot on other than observing for best streamer production? Thanks, ~Dan Kansas City area...where the ground might be starting to dry out, but only a little bit _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla
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