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LAN_403

GeordieBoy

Sun Jun 28 2009, 03:48PM

Registered Member #1232 Joined: Wed Jan 16 2008, 10:53PM
Location: Doon tha Toon!
Posts: 881

As long as the amplitude of the RF envelope rises smoothly at the start of each burst, the sparks seem to retain their long straight "spider plant" -like appearance.

Conversely, if you tune the driver too far below the resonator's natural freq, the system pulls into tune abruptly once corona forms around the topload and lowers the res freq. The rate-of-rise of the RF envelope is much more rapid when this takes place. This is when the discharges tend to fork and take on a more lightning-like appearance like that of a conventional spark-gap TC.

That has been my experience with multi-kW CW SSTCs anyway.

-Richie,

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