can i use old hydro ballast for jacobs ladder

**robsdoin** · 12-04-09, 06:54 PM

hi evry one i have an old 600w HPS ballast that i want to use for my second jacobs ladder project. i have been told about 3Kv comes out but it pulsed? and is it high frequency? current limiting? any info would b greatly appreciated. thanks rob

**trash** · 12-04-09, 09:24 PM

Probably back EMF. Have a look at a switchmode 'boost' circuit configuration.

**mobihci** · 12-04-09, 09:46 PM

have a look at this site here-

just reading through it, some great ideas there. maybe parts of the ballast could be used.

some different types here-

**mobihci** · 12-04-09, 09:49 PM

oh and hi trash, good to see you are still here.

**coalminer** · 12-04-09, 11:32 PM

or here

**robsdoin** · 13-04-09, 12:44 AM

thanks trash that will b good for next ladder or this one if the ballast doesnt work. flyback does hav a good arc.
i know it would b easier to just use a NST! but i dont have one(am tryin to find 1 very cheap)
any more suggestions/help would be great thanks

12-04-09, 06:54 PM	#1 (permalink)
robsdoin Junior Member Feedback Score: 0 reviews Join Date: Mar 2009 Age: 29 Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 0	can i use old hydro ballast for jacobs ladder hi evry one i have an old 600w HPS ballast that i want to use for my second jacobs ladder project. i have been told about 3Kv comes out but it pulsed? and is it high frequency? current limiting? any info would b greatly appreciated. thanks rob

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12-04-09, 09:24 PM	#2
trash Senior Member Feedback Score: 1 reviews Join Date: Jan 2008 Location: Tamworth Posts: 1,761 Thanks: 44 Thanked 792 Times in 360 Posts Rep Power: 79	Probably back EMF. Have a look at a switchmode 'boost' circuit configuration.

12-04-09, 09:46 PM	#3
mobihci Senior Member Feedback Score: 0 reviews Join Date: Apr 2009 Posts: 708 Thanks: 38 Thanked 203 Times in 138 Posts Rep Power: 26	have a look at this site here- just reading through it, some great ideas there. maybe parts of the ballast could be used. some different types here-

12-04-09, 09:49 PM	#4
mobihci Senior Member Feedback Score: 0 reviews Join Date: Apr 2009 Posts: 708 Thanks: 38 Thanked 203 Times in 138 Posts Rep Power: 26	oh and hi trash, good to see you are still here.

12-04-09, 11:32 PM	#5
coalminer Senior Member Feedback Score: 1 reviews Join Date: Jun 2008 Age: 72 Posts: 110 Thanks: 1 Thanked 25 Times in 12 Posts Rep Power: 7	or here

13-04-09, 12:44 AM	#6
robsdoin Junior Member Feedback Score: 0 reviews Join Date: Mar 2009 Age: 29 Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 0	thanks trash that will b good for next ladder or this one if the ballast doesnt work. flyback does hav a good arc. i know it would b easier to just use a NST! but i dont have one(am tryin to find 1 very cheap) any more suggestions/help would be great thanks