See attached, although these days we have OP-amps for much better feedback and passbank drive.
I would test it with 5 ohm load in place of the plasma tube.
Requires water cooled pass bank...
I will enhance it with parts to protect it against the ignite pulse.
Pictures of typical water cooled passbank is attached.
This is Lexel model 75, 4-13 Amp 110 VAC PSU for 135 volt tube. 1970s technology, but built like a battle tank.
Schematic is almost exactly the same as Lexel 88 in LASER FAQ except for less passbank transistors (6) , tapped input transformer, and a few resistor values are different.
Steve
Last edited by mixedgas; 05-25-2021 at 07:38.
Qui habet Christos, habet Vitam!
I should have rented the space under my name for advertising.
When I still could have...