Leak transformer for 200W SLI/H HO
Posted: Mon Jun 22, 2026 2:00 pm
Hello everybody,
so for whatever reason, since Kevins meet i have the desire to kill my scarce free time by designing and then building a high reactance Leak transformer for the 200W SLI/HO lamp. If that is successful i plan to produce a small series of them to trade or sell to other collector interested.
I know the general lamp specifications as:
200W
145V
1,55A
what would be good to know: The original open circuit voltage of the ballast-maybe someone is happy enough to own one and can measure it?
My plan ist to first build a fem model of the transformer in Matlab or a similar software, based on some standard core. i plan to simulate the lamp as a voltage source with the shape of a SOX lamp voltage on leak transformer having an RMS value of 145V. Once these simulation look successful i would try to build a first prototype. Once that is complete i pan to do some real life test and if those are successful i will try a small batch production as i think there is quite some interest in these...
so for whatever reason, since Kevins meet i have the desire to kill my scarce free time by designing and then building a high reactance Leak transformer for the 200W SLI/HO lamp. If that is successful i plan to produce a small series of them to trade or sell to other collector interested.
I know the general lamp specifications as:
200W
145V
1,55A
what would be good to know: The original open circuit voltage of the ballast-maybe someone is happy enough to own one and can measure it?
My plan ist to first build a fem model of the transformer in Matlab or a similar software, based on some standard core. i plan to simulate the lamp as a voltage source with the shape of a SOX lamp voltage on leak transformer having an RMS value of 145V. Once these simulation look successful i would try to build a first prototype. Once that is complete i pan to do some real life test and if those are successful i will try a small batch production as i think there is quite some interest in these...