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Trigatron

Hello Jim Fosse, and the group,

Thanks Jim for your input.

A while ago I made mention that I had found a BIG mercury ignitron 
tube in a surplus yard.  It was a type GL6228 made by General 
Electric.  It turns out that this tube was also produced by 
Westinghouse as type WL6228, and is also available through Richardson 
Electronics from National as type NL6228.  If Henry Ford had made 
these as well I guess they'd be called a FL6228!  I digress.

This is an interesting toob!  Some data directly from the National 
poop sheet follows:

IGNITRON NL-6228
The NL-6228 ignitron is a stainless- steel-jacketed, water cooled 
mercury-pool tube designed especially for pulse modulator 
applications (Tesla coils?), rectifier service and for use as a dc 
short circuiting switch (can crusher?).

<skip the stuff about using it as a humongous 20,000 volt PRV, 150 
amps continuous rectifier tube>

DC Short-Circuiting Switch
Anode Voltage(volts).......................................1000 to 50,000
Anode Current(peak amperes).........................up to 30,000
Discharge Energy(Joules)................................up to 200,000
Ionization time(depends on trigger circuits)....less than 10 uSec
Cooling.............................................................water at 5GPM min
Net Weight.......................................................100 lbs
 
And how about this.  Consider the following typical example as 
representative of this tube as a Pulse -Modulator.

40,000 volts DC
3,300 peak Amps.
360 PPS rep rete
3.2 uSec (I don't know if this was trigger time, or timing jitter.  I 
do not believe it was pulse width.)

This could be fun to play with!  It looks like it may even serve in a 
Tesla coil in lieu of the traditional rotary break up to some power 
level that is on- par to large on the scale that most of us hobbyist coilers 
work at!.  I think I'll grab this rare find on speculation.

Comments anyone?

May the E field be with you!, rwstephens