Hi Rodolphe,
9) Sniffer coil ...........
That's just a rough estimate on my part. Nine years ago, I first started out with a poorly engineered SSG kit I bought that had a standard spool bifilar wound with #26 and #23 wire. It supposedly had 800 to 900 turns, according to the source I bought it from. It worked, but charging was very poor because the impedance was too high. So I decided to remove about 100 to 150 turns which I wound onto a short length of 3/4" PVC pipe. So the pipe now had an equal number of turns of #23 and #26 on it. This was so long ago I don't remember the exact number of turns.
When I was looking to come up with a sniffer coil, I found this old left over pipe with the wire already on it. So I soldered the two different sized wires together in series and connected it up to my O-scope and it worked great for a sniffer coil!
Number of turns isn't important. You just need enough to get a signal for the high impedance scope.
Gary Hammond,
9) Sniffer coil ...........
How did you manage to count the amount of your windings? I could lay out a couple of meters on the floor, and then with the bobbin diameter I can roughly calculate it, but I guess that is not how you did it?
When I was looking to come up with a sniffer coil, I found this old left over pipe with the wire already on it. So I soldered the two different sized wires together in series and connected it up to my O-scope and it worked great for a sniffer coil!
Number of turns isn't important. You just need enough to get a signal for the high impedance scope.
Gary Hammond,
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