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Simultaneous Triggering of Bipolar Marx Generator?

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woodchuck
Tue Nov 19 2013, 08:45PM Print
woodchuck Registered Member #39190 Joined: Sat Oct 26 2013, 09:15AM
Location: Boise National Forest
Posts: 65
Seems like both columns of a bipolar Marx generator would have to fire at the same time for there to be any advantage to the bipolar design. How is this simultaneity obtained? How fussy is the adjustment of the bottom gap of each column?

Simultaneous triggering must be easier to achieve than I'm imagining. Otherwise there wouldn't be a plethora of videos demonstrating successful operation.
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Shrad
Tue Nov 19 2013, 09:06PM
Shrad Registered Member #3215 Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
synced thyristor triggered pulse transformer triggering the bottom gap?
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woodchuck
Wed Nov 20 2013, 08:19AM
woodchuck Registered Member #39190 Joined: Sat Oct 26 2013, 09:15AM
Location: Boise National Forest
Posts: 65
That would make me feel more comfortable! But I don't see or hear any mention of that being done. For example, uzzors2k bipolar Marx generator on the blue IKEA cutting board certainly doesn't seem to be equipped with anything like that.

Makes me wonder if there is some sort of sympathic coupling mechanism at work - like just plain EMI. Ironic that there might be an instance where it is beneficial. smile
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Shrad
Wed Nov 20 2013, 10:09AM
Shrad Registered Member #3215 Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
research marx and other discharge apparatuses are triggered that way, using blumlein lines and coaxial designs

you can always look at swissrocketman340's videos on youtube

they are about lasers but the same applies
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Antonio
Wed Nov 20 2013, 12:27PM
Antonio Registered Member #834 Joined: Tue Jun 12 2007, 10:57PM
Location: Brazil
Posts: 644
The ultraviolet light from the sparks in one leg may cause ionization in the other.
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woodchuck
Wed Nov 20 2013, 05:15PM
woodchuck Registered Member #39190 Joined: Sat Oct 26 2013, 09:15AM
Location: Boise National Forest
Posts: 65
Ionizing radiation - that's an excellent bit of speculation.

A parallel gap experiment seems indicated for the express purpose of testing various hypotheses. I'll get on this tout de suite.
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Proud Mary
Thu Nov 21 2013, 10:58PM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Synchronization by UV gap irradiation is standard in wave-erection Marxes.

Good quality dual Marx setups sometimes use krytrons as a low jitter trigger.
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