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Fluorescent lamps can be used in the District of Columbia.

If you were really asking if they can be supplied with direct current, the answer is yes, but they really don't like it. They prefer to be supplied with alternating current, or AC, so you'd have to "chop" the DC or use it to drive an inverter, which will change the DC into AC.
There are florescent lamps and CFL's made specifically for 12 and 48 VDC applications available through specialty alternative energy stores.

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13y ago
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AnswerBot

1mo ago

Fluorescent lamps typically require AC voltage to operate. The AC voltage causes the gas inside the lamp to produce ultraviolet light, which then interacts with the phosphor coating on the inside of the lamp, resulting in visible light. Using DC voltage would not be sufficient to create the necessary reaction for the lamp to produce light.

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15y ago

No, they are totally AC. The lamps are on the output of a transformer (ballast) the input of the transformer being the line voltage. The line voltage can be many different voltages 120V, 227V, 347V .

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14y ago

yes incandescent lamp can run on dc, for example dc cell operated torch employs incandescent lamp of small watt

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Q: Does fluorescent lamp work by DC voltage?
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Related questions

If AC is replaced by DC in a fluorescent lamp circuit will the circuit work?

No.


Can we use a fluorescent lamp in DC?

Yes, fluorescent lamps may be powered by DC but they need a DC lamp controller instead of an AC ballast and starter. The DC lamp controller is more complex. I have a 12V lantern with fluorescent lamp tubes.


Can we use fluorescent lamp in dc?

Yes, fluorescent lamps may be powered by DC but they need a DC lamp controller instead of an AC ballast and starter. The DC lamp controller is more complex. I have a 12V lantern with fluorescent lamp tubes.


Does a fluorescent ballast work in a DC V supply?

No, fluorescent ballasts are designed to work with AC voltage supplies. They require the alternating current to function properly and cannot operate on a direct current (DC) power source.


What changes are to be made for a fluorescent lamp circuit to work if ac supply is replaced by dc?

A fluorescent light fixture is designed to operate on an AC voltage supply. To have the fixture operate off of a DC supply a power inverter would have to be installed. The power inverter would then change the DC to AC for the fixture to operate. These power inverters are reasonably priced these days and can be bought at most DIY stores.


Can lamp work only on ac?

Depends. Lamps can certainly be built to work on either AC, or DC, or both. But some lamps, particularly those with electronics in them, either a dimmable lamp, or a fluorescent lamp, may only work with one type of electricity.


What type of fluorescent lamp is commonly used in an exterior sign?

A high output lamp with a dc recessed base connected to a high output -10 degree ballast. Anything else will not work properly in cold weather.


Does tube light work with ac or dc?

Fluorescent lights work just fine on DC voltage, BUT one needs a current limited power source to stabilize the circuit against the negative resistance of the gas discharge. This can be done with either a resistor or an electronic circuit. The resistor solution is too lossy because excess voltage from the dc csupply has to be converted to heat across the resistor. Electronic switching supplies could supply a fluorescent light with a dc voltage and current without the losses. But that's technological overkill and most circuits still supply AC.


Can a fan work on a DC voltage?

Yes, if the fan is designed to work on DC voltage, otherwise no.


What is the most common fluorescent lamp found in an exterior commercial sign?

The most common fluorescent lamp found in an exterior commercial sign will be a high output DC recessed base lamp. The ballast will be a zero degree type to allow it to ignite the tube in cold weather down to 0 degrees F.


Will a photocell work using dc voltage?

it creates a dc current


Can SMPS work in DC supply?

Yes. Input DC voltage would be root2 times the input AC voltage.