 GDTs and dead time
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thedatastream
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Registered Member #505
Joined: Sun Nov 19 2006, 06:42PM
Location: Yorkshire!
Posts: 329
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*toot*
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Dr. Dark Current
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Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
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I managed to minimize the overshoot by winding trifilar magnet wire on a smaller core.
Is enameled wire ok for a GDT? I was previously always using PVC wire since I was worried that enameled wire won't stand the full mains voltage at several tens KHz..
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Wolfram
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Registered Member #33
Joined: Sat Feb 04 2006, 01:31PM
Location: Norway
Posts: 971
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I wouldn't recommend it. I used it for some time for driving a half bridge, and it worked for a long time, until it arced over and killed the FETs.
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Dr. Dark Current
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Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
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I saw some screened stereo audio cable and I thought it could be good for a GDT... I wound 8 turns of it on the core and voila- the problem is solved! 
I used the shields in parallel as the primary and the inner conductors as secondaries.
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