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12v dc ballast

12v dc ballast

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12v dc rv ballast

14w_daylight.jpg vitalite6w.jpg 12v_ballast.jpg 24v_ballast.jpg

Light Information

Light Information

Manufacturer:rec specialties
Model Reference:ib-113
Lamp
Lamp Type:t8 bipin or 4 pin 13w cfl
Fixture
Ballast Type:electronic
Electrical
Wattage:14w
Voltage:12v dc
Physical/Production
Application/Use:rv or solar

File information

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Filename:12v_ballast.jpg
Album name:toomanybulbs / misc stuff
Keywords:Gear
File Size:261 KB
Date added:Feb 27, 2011
Dimensions:2048 x 1150 pixels
Displayed:388 times
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dor123
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Feb 27, 2011 at 10:57 PM Author: dor123
I bet that all those three ballasts for 12V, 24V and 36V DC you showing us in your pictures are magnetic, since electronic ballasts shouldn't need special specifications to operate on low voltage DC.
What more, if this would be an electronic ballast, it would be able to operate on all three voltage ratings, since electronic ballasts can be operate with variety of voltages either with DC or AC (This is why mains voltage variations don't affects electronic ballasts at all while they can fry preheaters and magnetics in seconds [Especially if the variations in the voltage are more then -+15V]).
See my post about the reasons of shorter life in electronic ballasts here.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

toomanybulbs
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Feb 27, 2011 at 11:37 PM Author: toomanybulbs
they are electronic.how else would one step up voltage?maybe with a vibrator.
and overvoltage events trash electronic ballasts while rs and preheaters survive.was in a machine shop where this happened.lost neutral.killed every electronic ballast in the place.the old preheat shoplights still ran fine.




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Feb 28, 2011 at 12:01 AM Author:
This ballast is for T8 which means it overdrives this PL lamp and probably overheat the transistors and the output transformer in the process.
toomanybulbs
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Feb 28, 2011 at 12:21 AM Author: toomanybulbs
its close enough to work fine.iirc it runs 300ma to the lamp.several in daily use on my solar setup.these are hard on the lamp if started too often.one ran 3 years nonstop in an outbuilding before i changed the lamp because it got dim and badly blackened.
dor123
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Feb 28, 2011 at 03:14 AM Author: dor123
@toomanybulbs: Mains voltage variations can't affect electronic ballasts, since they can be operate on a variety of voltage ranges both on AC and DC, but severe overvoltages (beyond the limit of the voltage range of electronic ballasts, which aren't related to mains variations) and high voltage surges can indeed damage the electronic ballasts (Both things can be prevented by surge protectors).
In magnetic ballasts, the operating voltage of the ballasts MUST match the mains voltage on which it operates with no more then -+15% differences, or else the ballasts WILL fail in seconds, especially in +15% overvoltage (Far lower then what required for electronic ballast to fail).
Only severe overvoltage that are beyond the operating voltage range of the electronic ballasts can distroy them and this can also be prevented by a surge protection.
Read why i and Medved commented about these things in this picture.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.





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Feb 28, 2011 at 09:05 AM Author:
I don't know about US lamps they draw more current?...but the ballasts here at 230v magnetic are rated to provide 170mA to a 13w PL. It may be that the running voltage is low so the high current compensates for that.. .
Medved
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Feb 28, 2011 at 01:44 PM Author: Medved
@imj: Thee are two current rating for 13W:
- One 0.17A (80V arc; based on F13T5 electrical characteristics)
- One 0.21A (65V arc; this i've seen only with CFL, likely it was intended to work even on 120V with simple series choke in preheat circuit)
In Europe both spec's are seen (as quad tube stick CFL)

@dor123: Magnetic ballast in sensitive to even light overvoltage (15% is indeed enough), but it need time to actually get killed, few minutes is by far not enough (as the only primary cause for their destruction is overheat, while they have quite large thermal mass, so it take at least 10's of minutes to reach dangerous temperature and then few 10's of hours of such overheated operation for the insulation to decompose to the killing extend). In order to kill them in minutes you would need more severe overvoltage then +15%, but this is quite rare and does not stay for more then few seconds (as a result of fault current drop on the neutral wire before the related fusing respond; unless there is some severe fault in the installation, like broken Neutral wire)
But this is valid for pure magnetic ballasts (so only core and coil, no capacitors,...).
"Self recovery" (mandatory for this applications) capacitors need only few 10's of minutes of voltage exceeding their breakdown till the "recovery" mechanism lower their capacitance below required minimum. But such breakdown level is usually way above the 15% overvoltage, so capacitors are usually not the limiting factor as well (the rarity and generally short cumulative time of the larger then 10% overvoltage is a key factor here).

No more selfballasted c***

Bulb Freak
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Jan 09, 2012 at 08:03 AM Author: Bulb Freak
I have stuck a 240V 36W and a 18W switch start ballast on volts more than 400V and they run fine for more than 30mins in fact the 18W one was run on 560V for more than 6h and it was fine

My other hobby is buses, especially the Routemaster

Medved
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Jan 10, 2012 at 10:55 AM Author: Medved
Simple and single choke (not series pair) connected to more then 250V would severely overheat it, I do not believe it was intact after half a hour at 400 or 560V. Of course I mean all at 50Hz sinewave, with nothing more then the rated lamp in series.

No more selfballasted c***

douro20
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Aug 29, 2012 at 03:29 PM Author: douro20
Aren't these also used in 12v emergency fixtures?
toomanybulbs
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Oct 24, 2015 at 10:36 AM Author: toomanybulbs
mainly rv and solar setups.
i run a solar setup and use several of these in lamp conversions.even have one in a jelly jar porch light.
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