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Re: [TCML] RSG disks - who can make them ?



Hi Chris,

It doesn't take a storage scope, but that would be ideal. Even a basic oscilloscope can be used to see the waveforms just hanging a small wire in the scope probe about twice the arc length ability. Locking on can be difficult if the scope is old. It helps to start at very low power and if you can get it locked on, then spend some time deciphering what it is your seeing. You'll pick up the secondary as well, but that's no problem. If all goes well, you can then increase power. You'll find that as power increases, it may quench sooner, but that depends on the gaps ability at the new power level. If it gets worse, you know the gap is having a problem.

Take care,
Bart

Chris Swinson wrote:
John,



Chris,

The best way is by using an RF current transformer connected to a storage
scope.
This is to look at the primary tank currents. Many folks have done this.
Terry F.
probably has some stuff written up about it. Some folks have also used an antenna at a distance from the coil to pick up the RF and look at it on the scope, but sometimes it's hard to get a clean signal of the primary. Instead
the secondary and primary signal may be seen overlapped which makes  the
display look confused on the scope. Using a sync rotary, the waveform can be seen without a storage scope. Using async gaps, it's hard to see anything clearly without a storage scope because the signal can't be synch'ed easily.
The modern digital scopes can easily deal with these signals and  issue.

John


Might be a bit of a problem with me then as I do not have a storage scope :-( In anycase, I will be using a sync rotor so hopefully This will work. Though as this is a new area of physical testing I have no idea on how to hook it up... Where is Terry when'ya need him :P

Chris



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