Problem: It lights when powered from a 12 volt 5 aH battery but doesn't light from a 13.8 volt 19 amp power supply. I can light it from the battery, turn on the PS and it continues to burn. But when I disconnect from the battery the HID goes out. All the while a small auto bulb continues to burn running purely off the PS. Voltage remains 13.8 volts. And I've tried two different ballasts - all do the same thing.
The HID Ballast is rated at 55 watt; 9 - 16 volt; 8 amp (I-max).
I want to use it in a spring arm lamp (with magnifying glass) that was originally designed for a 60 W 120 VAC bulb. I haven't any. I have a 6000K 1100 Lumen LED but it's too heavy for the springs, and it's size puts all the light in one corner. IF I use the HID I can position it in the best place to cast its light over the work surface with - I don't know how many Lumens, but it's a lot brighter than the LED.
I've used my O-Scope to see if there's a ripple in the supply line but even at 2 V per division and a sweep rate of 0.2 µS (highest speed) I don't see any sign of ripple. The voltage remains constant at 13.8 volts, so it's not going way over the rating of the ballast.
I'm at a loss to understand why(not).
[edit]
I'm starting to wonder if there's a start-up current that my supply can't match. NONE of my 12 volt supplies can deliver the start-up blow. Do you think that may be the problem? But here's the confusion: AFTER starting it up using the battery, disconnecting the battery and running purely off the supply it immediately goes out.
ANYONE wanna hazard a guess? I'm open to anything right now.
The HID Ballast is rated at 55 watt; 9 - 16 volt; 8 amp (I-max).
I want to use it in a spring arm lamp (with magnifying glass) that was originally designed for a 60 W 120 VAC bulb. I haven't any. I have a 6000K 1100 Lumen LED but it's too heavy for the springs, and it's size puts all the light in one corner. IF I use the HID I can position it in the best place to cast its light over the work surface with - I don't know how many Lumens, but it's a lot brighter than the LED.
I've used my O-Scope to see if there's a ripple in the supply line but even at 2 V per division and a sweep rate of 0.2 µS (highest speed) I don't see any sign of ripple. The voltage remains constant at 13.8 volts, so it's not going way over the rating of the ballast.
I'm at a loss to understand why(not).
[edit]
I'm starting to wonder if there's a start-up current that my supply can't match. NONE of my 12 volt supplies can deliver the start-up blow. Do you think that may be the problem? But here's the confusion: AFTER starting it up using the battery, disconnecting the battery and running purely off the supply it immediately goes out.
ANYONE wanna hazard a guess? I'm open to anything right now.
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