Hi, Don't go touching the primary :D In SISGs they are really loaded for bear! I fully enclosed mine: http://drsstc.com/~piranha/p-2/fsepds/PIRANHA-Const-004.JPG http://drsstc.com/~piranha/p-2/fsepds/Complete-2.JPGInsulated wire spaced under Lexan. But you still don't want to go playing with anything in there! With all those big caps it may not be DC coupled, but I would not say it is floating...
Perhaps what Ed meant is that the primary might stay charged after the power is removed since it does not have a solid path to ground. The caps can charge to just below firing voltage and sit there. Even if it fires, one cap can be -1000V while the other is +1000V. There are plenty of parallel bleeding resistors of course. But it is a bit of a concern if you pull the thing apart to work on it.
If you have an exposed primary, you can always hard ground it to the strike ring system just to be safer when it is not running.
Terry bartb wrote:
Dangerous in what way? From the aspect that the primary would be dangerous to touch while it's operating? absolutely! Is the primary any less dangerous to touch when it's not floating while it's operating? no..Dangerous for components? no..Not sure I understand the direction of your comment. Maybe you can expand?Regards, Bart Ed Phillips wrote:As far as reliability, the SISG has proven to me that it is extremely reliable (far exceeding my expectations). I didn't do a lot of calculations with the current, but concentrated simply on building the DC bridge, the coil, etc.. First firing was a winner! Here is my very simple circuit and how I ended up plugging the SISG into my circuit. This may seem very familiar.http://www.classictesla.com/sisg/sisg.gif";That looks like a dangerous setup to me because the primary is always floating at HV with respect to ground.Ed_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla
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