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250W HPS test board After my 100W mercury vapour test board, here's a 250W HPS one! I found a pair of 250W HPS ballasts last Thursday at school. One is an Advance 120/277/347V (pictured here) and the other is a 347V Magnetek. On the Advance ballast, the ignitor was shot, since I had nothing to lose, I opened it and found a 6K power resistor that crumbled apart. I replaced it by a pair of big 12K ohm resistors in parallel and it now works like a charm! The ballast is gonna live on this test board, which includes a 12V start/stop circuit! Keywords: Gear

250W HPS test board

After my 100W mercury vapour test board, here's a 250W HPS one! I found a pair of 250W HPS ballasts last Thursday at school. One is an Advance 120/277/347V (pictured here) and the other is a 347V Magnetek.

On the Advance ballast, the ignitor was shot, since I had nothing to lose, I opened it and found a 6K power resistor that crumbled apart. I replaced it by a pair of big 12K ohm resistors in parallel and it now works like a charm! The ballast is gonna live on this test board, which includes a 12V start/stop circuit!

100_1102.jpg 100_1101.jpg HPIM0679.JPG 100_1096.jpg HPIM0641.JPG
File information
Filename:HPIM0679.JPG
Album name:Vince / HID lamps and ballasts
Keywords:Gear
Filesize:909 KiB
Date added:Apr 07, 2012
Dimensions:2592 x 1944 pixels
Displayed:140 times
Color Space:sRGB
Contrast:0
DateTime Original:2012:04:07 16:12:10
Exposure Bias:-1 EV
Exposure Mode:0
Exposure Program:Program
Exposure Time:1/8 sec
FNumber:f/3.6
Flash:No Flash
Focal length:7.5 mm
ISO:269
Light Source:Unknown: 0
Make:Hewlett-packard
Max Aperture:f/3
Model:HP DVC V5061u
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=11344
Favorites:Add to Favorites

Comment 1 to 5 of 5
Page: 1

joe_347V   [Apr 07, 2012 at 09:27 PM]
Shocked Looks good, I see that your 12v control circuit is in DC too. Razz
TiCoune66   [Apr 08, 2012 at 02:07 AM]
Most DC relays act weird on AC, so I had to add a bridge rectifier from a computer power supply LOL. I still have to order a 14 pin relay as well.
joe_347V   [Apr 08, 2012 at 05:46 AM]
Ahh, I see...I've been planning to make one of these similar start/stop switches but with a 120v ac relay so I don't have to wire up a LV control circuit. Razz
TiCoune66   [Apr 08, 2012 at 08:51 PM]
From an electrician's point of view, I think a control circuit being at the same voltage as the power circuit is rather pointless XD. I make those circuits on 12V so I have no contact with 120V, the relay does the job for me Wink

But from a lighting enthusiast's point of view, it sure is cool to use relays, no matter their voltage!
streetlight98   [Feb 06, 2014 at 10:02 PM]
Nice! But what is a 12V start/stop circuit?

Comment 1 to 5 of 5
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