once more i found a site that sells lighting Stuff....and i found that they sell LPS Lamps,Sockets,and ballasts...the Socket is abit much so are the Lamps but the ballasts are soooo Expensive!!!

$149.88 for a 18 watt SOX ballast

$195.98 for a 35/55 Watt SOX ballast

$241.15 for a 90 Watt SOX ballast

$289.69 for a 135/180 Watt SOX ballast

After seeing these Prices i think if i do get any Low Pressure Sodium (Sox Lamps) in the Future....ill try using them with Flourescent Ballasts

adding to that Here is there Selection of Low Pressure Sodium Lamps.

and This is one of the LPS(SOX)Sockets.

You might do your own HF electronic ballast, across the lines of fluorescent. I use this for basic component calculations (inductor, resonant capacitor, frequency), for SOX i would choose IR21571 (without PFC) or 2168 (with PFC)
If you want really simple ballast and do not need EOL protection, you might use simple CFL-like topology . But such topology is only simpler to assemble, but by far not to design - in my experience it does require some tuning in some simulator (i use an old PSPICE8)...

You might do your own HF electronic ballast, across the lines of fluorescent. I use this for basic component calculations (inductor, resonant capacitor, frequency), for SOX i would choose IR21571 (without PFC) or 2168 (with PFC)
If you want really simple ballast and do not need EOL protection, you might use simple CFL-like topology . But such topology is only simpler to assemble, but by far not to design - in my experience it does require some tuning in some simulator (i use an old PSPICE8)...

Nice Idea...but id Rather wait til i get a little more experience in Electronics before Attempting to Construct an Electronic Ballast.

I think this site has magnetic CFLs!

https://www.lightbulbdepot.com/product.asp?sub=15&dep=Cylindrical&prod=06209L

I have used the LPS with fluorescent ballasts, but I actually found them act differently from fluorescent to the REAL LPS ballast...

I have used the LPS with fluorescent ballasts, but I actually found them act differently from fluorescent to the REAL LPS ballast...

hmmmmm......how excactly do they act Diffrent when being Driven in this Manner?...is it good or bad?

You might do your own HF electronic ballast, across the lines of fluorescent. I use this for basic component calculations (inductor, resonant capacitor, frequency), for SOX i would choose IR21571 (without PFC) or 2168 (with PFC)
If you want really simple ballast and do not need EOL protection, you might use simple CFL-like topology . But such topology is only simpler to assemble, but by far not to design - in my experience it does require some tuning in some simulator (i use an old PSPICE8)...

I have looked at the software. Interesting software. Questions though: Where I can input a lamp setting like current/voltage in both start and running regime like HID lamps and LPS. Is there a software creating HID ballasts? Since the software is strictly limited to fluorescent/germicidal lamps both linear and compact.

I have looked at the software. Interesting software. Questions though: Where I can input a lamp setting like current/voltage in both start and running regime like HID lamps and LPS. Is there a software creating HID ballasts? Since the software is strictly limited to fluorescent/germicidal lamps both linear and compact.

At first i have to say, this SW is not able to replace, nor even supplement your good knoledge about ballast design and understanding, how exactly used chips work, it is only something like quick calculator, calculating only some component values, mainly those used for programming controller's values (time, frequency, power,...).

This SW is designed for fluorescents HF ballasts.
Such ballast concept is not much usable for high pressure lamps, as there might be problem with resonances. For these is better to use DCDC converter taking care of main ballasting functionality and followed with chopper reversing polarity with low frequency, to avoid electrolysis effects in the lamp.

And as the "BallastDesigner" is intended for fluorescent, it does expect the arc voltage is constant. So there is only one place to insert lamp parameters.
So beside fluorescents it is useable only for LPS.
You have to switch to "advanced" in the main menu and select "user lamp". Then select the "Lamp" tab and then fill-in lamp parameters. Use steady state parameters (from the lamp's datasheet), don't forget to recalculate the voltage from "rms" (in the lamp's datasheet) to "peak" in the SW.
The "running" voltage is clear - you put the one recalculated from the datasheet.
As the "Maximum ignition" put the required "OCV" necessary for correct starting.
In the "preheat" section you set some "voltage", this you set the same as the ignition one (the SW treat this as the voltage for sure not sufficient to strike the lamp during preheat phase).
As SOX do not allow preheat (except linear), set "Preheat time" to 0 and preheat current the same as running current.

Then in the "ballast" tab on the right side (if you choose the topology with PFC) you have to manually enter the PFC power to Plamp*1.1 (the automatic calculations controlled with the check-box does not work, there is some bug in the recent version).

So that's all i know, how to trick this SW for SOX ballast...