A device that operates as part of a fluorescent lamp circuit and is designed primarily to provide sufficient starting voltage. A ballast may also heat the lamp electrodes and, once the tube is in operation, limit the amount of electrical energy going through the lamp.

An electromagnetic device used in fluorescent and HID luminaires to provide the necessary starting voltage and to limit the lamp current during operation.

Used in gaseous discharge systems (fluorescent and high-intensity discharge), the ballast starts the lamps and then regulates the flow of current during normal operation.

1. Fluorescent lamp transformer which controls the starting and operating current by regulating current flow to the pins or sockets on the tube. 2. Stone or gravel, which provides drainage and stability, as a base for concrete. 3. Stabilizing weight added to ships.

This is used to provide lighting the correct start-up current for a fluorescent tube or compact. If a ballast is high frequency this means the bulb is switched on immediately and avoids the flicker. If fluorescents are to be dimmed it is necessary to ensure the ballast is dimmable and specify this (usually they are not).

A coil or coils that regulate power going to the bulb/s.

A device that provides the proper voltage and current to start and operate the lamp; acts as a current regulator and limiter and allows the arc discharge to sustain longer

Electrical device used with fluorescent and high intensity discharge lamps to provide the necessary starting and operation power conditions.

Device used with discharge lamps for stabilizing the current in the discharge.

Electrical or electronic component required for fluorescent (and HID) lamps. Ballasts provide enough voltage to start the lamp and then limit the current for continuing operation.

a magnetic coil that adjusts current flow through a fluorescent lamp providing the necessary current surge to start the lamp and maintain even current flow for continuous operation of the lamp.

An impedor, used to stabilize the current in the circuit.

Material used to improve the stability and control of a ship. In wooden ships usually stone, lead or iron; in metal ships, often water

an electric device for starting and regulating fluorescent and discharge lamp

Cinders, crushed rock, or gravel placed on the roadbed to hold track ties in place and to promote uniform drainage.

A device used with a discharge lamp to obtain the necessary voltage, current, and/or wave form for starting and operating the lamp.

A device that provides starting voltage and limits the current during normal operation in electrical discharge lamps (i.e., florescent lamps).

The power supply for fluorescent and metal halide lighting.

A device used with a fluorescent-type lamp to provide the necessary starting and operating electric conditions.

Device used to operate fluorescent and HID lamps. The ballast controls the lamp current during operation, and may assist in the lamp starting process.

A device that by means of inductance, capacitance, or resistance, singly or in combination, limits the lamp current of a fluorescent or high intensity discharge lamp. It provides the necessary circuit conditions (voltage, current and wave form) for starting and operating the lamp. [Go to source

device which initiates the surge to start flourescent tubes

A unit used in conjunction with discharge lamps containing capacitors, inductors and other start-up circuitry. The inductor is initially used to develop a high potential to strike the discharge and is then used to limit the current flow while the lamp is lit.

coarse gravel laid to form a bed for streets and railroads

an electrical device for starting and regulating fluorescent and discharge lamps

a device that charges the electrical current in fluorescent lights

a device that is used to start a lamp and maintain proper current and voltage to keep it operating

a device that sends current to the light bulb at a certain time and prescribed voltage level

a device which includes a transformer that modifies incoming voltage and current to provide the circuit conditions necessary to operate electric discharge lamps

an electrical component that controls the voltage and possibly the frequency of the electricity supplied to the bulb

an electrical component used with a fluorescent bulb (or mercury vapor lamp or arc lamp) to conduct electricity at each end of the tube

an electrical device that is designed to limit the amount of current inside any arc lamp (low pressure or high pressure)

an electrical device which is required for all discharge lamps

an electrical device, which is subject to failure

an electromagnetic or electronic component used to provide the proper starting/operating electrical condition to power a fluorescent, neon, or HID lamp

a power supply and electronics for florescent light bulbs

a simple transformer with a very high impedance secondary winding which makes its current self-limiting

a simple transformer with a very lamp table high impedance lamp table

a transformer that is needed to keep the fluorescent tubes from blowing up

A magnetic or electronic device used to control the starting and operation of discharge lamps.

A device used with a fluorescent lamp to obtain the necessary circuit conditions for starting and operating.

A transformer found in fluorescent light fixtures. Older ones may contain polychlorinated biphenyls (PCBs).

An electrical device required to operate fluorescent lamps.

A coil that regulates the power going to the bulb

A device used with an electric-discharge lamp to obtain the necessary circuit conditions for starting and operating such lamps as fluorescent and high intensity discharge (HID).

A part of every fluorescent lamp fixture. It is a circuit that controls the rate of flow of electrical current through a fluorescent lamp. Also used for mercury vapor, sodium vapor and other HID sources. (HID - High intensity discharge)

used in fluorescent and High Intensity Discharge (HID) lamps; comprised of a transformer (often containing PCBs, a hazardous substance) and magnetic coil that controls the flow of current within the lamp and provides the required starting voltage; must be managed as a hazardous waste if it contains PCBs.

A component within fluorescent light fixtures that stabilizes electrical current

A transformer that steps up the voltage in a fluorescent lamp.

A charging device in fluorescent lights which give a "jump start" to the gas inside the tube to make it start glowing steadily.

A device required by electric-discharge light sources such as fluorescent or HID lamps to regulate voltage and current supplied to the lamp during start and throughout operation.

Device that transforms electrical energy used by fluorescent, mercury vapor, high and low pressure sodium, or metal halide lamps so the proper amount of power is provided to the lamp.

An electronic device that is used with a fluorescent or high-intensity discharge (e.g., metal halide) lamp to provide the necessary circuit conditions (voltage, current, and wave form) for starting and operating the lamp. See also electronic ballast and magnetic ballast.

A device used with an electric-discharge lamp to obtain the necessary circuit conditions (voltage, current, and wave form) for starting and operating.

A device used in conjunction with an electric-discharge lamp to cause the lamp to start and operate under the proper circuit conditions of voltage, current, wave form, electrode heat, etc.

controls the current flowing in a discharge lamp. Starter circuitry is usually built in as well. Usually internal to most lantern s with the exception of follow spot

Device used to control the current and prevent overheating in a discharge lamp

A device used to control the voltage in a fluorescent lamp.

An electrical device used in fluorescent and HID fixtures. It furnishes the necessary starting and operating characteristics to the lamp for proper performance.

The electrical supply for some lights, such as fluorescents and metal halide bulbs. These are available in several varieties, such as tar, transformer, and electronic. They must be properly matched to the type of bulb you are using.

A transformer device equipped with starting circuitry required by electric discharge light sources like fluorescent or HID lamps to regulate voltage and current supplied to the lamp during startup and manage voltage at constant levels to sustain an electrical arc passing through atomized vapors throughout the lamp's operation.

A power supply used with arc or discharge lamps to control current through the bulb.

An electrical transformer that changes electrical voltage for HMI lights.

device used to start a gas discharge lamp and once started to limit the flow of electric current

A device which limits electrical current to an arc or florescent source fixture.

A transformer which changes the voltage from your house outlet to the voltage needed to power different types of lighting.

A transformer or solid-state device, located in an arc discharge fixture, that regulates the voltage and amperage of the electricity supplied to the lamp and starting circuit, especially fluorescent fixtures.

In a fluorescent fixture, a component that provides the necessary high starting voltage and limits current to the proper operating value.

A device used to operate fluorescent and HID lamps. The ballast provides the necessary starting voltage, while limiting and regulating the lamp current during operation.

An electrical step-up transformer to allow controlling of flourescent lights.

weight added to the boat. Most of the ballast is normally in the metal bulb on the bottom of the fin but a little internal ballast, inside the hull, may be needed to get the total weight up to the minimum allowed

The part of a fluorescent bulb that controls the current going to the bulb. Fluorescents need high voltage to begin to glow. Once the light is lit, the ballast reduces the current to keep the bulb glowing. The ballast may be built into the base (self-ballasted) or separate from the bulb (modular).

A device that provides starting voltage and limits the current during normal operation in electrical discharge lamps (such as fluorescent lamps).

Is a power source used for lighting lamps, a typical example would be to light T-12 fluorescent lamps. Also see transformer.

A device used to obtain the necessary circuit conditions to start and operate an electric discharge lamp. Electronic: A newer technology that operates lamps at frequencies above 20,000 Hz. Constructed with electronic circuitry. Magnetic: An old technology that uses a "core and coil" (steel plates laminated together and wrapped multiple times with a copper wire) construction. Performs the minimum functions required to start and run the lamp.

The elctrical device required for all discharge lamps that limits the current through the lamp. Additional functions may be incorporated in the basic unit such as starting circuits and dimming control.

A power-regulating device used to control fluorescent lamps.

A power source required for fluorescent and metal halide lights. They are highly specialized and each type of light requires its own type of ballast.

An electrical control device that initiates the light arc in fluorescent and high intensity discharge (HID) lights with high starting voltage.

Auxiliary unit used with HID lamps to provide the power to start the lamp and regulate the voltage, current & waveform while it is in use. A ballast is required for each HID lamp.

An auxiliary piece of equipment designed to start and to properly control the flow of power to gas discharge light sources such as fluorescent and high intensity discharge lamps.

A device used with fluorescent lamps to supply sufficient voltage to start and operate the lamp, but then to limit current during operation. Most ballasts are designed for about 50,000 hours of life (25 years of normal office use).

A device used with electrical discharge lamps such as fluorescent and high-intensity discharge (HID) lamps to provide the necessary voltage, current and waveform for starting and operating the lamp. These can be electromagnetic or electronic depending on the type of lamp. Electronic ballasts have been available since the early 1980s and have the advantage of being more energy-efficient and, because they operate at high frequencies (25-35 kHz), emit less flicker which is a factor with electromagnetic ballasts in cold weather.

The electrical components (usually a transformer and capacitor) that energize a high intensity bulb.

The power supply to activate and regulate voltage in an ultraviolet (UV) lamp.

Transforms and controls electrical power to the visual light. A device used with an electric-discharge lamp (for instance, fluorescent lamps) to get hold of the necessary circuit conditions for preliminary and operating.

A electrical apparatus used to provide current for the start up of HID and fluorescent lamps & light bulbs, and then control the current to regulate their operation.

An auxiliary electrical device consisting of induction windings wound around a metal core and sometimes including a capacitor for power correction. It is used with fluorescent and HID lamps to provide the necessary starting voltage and to limit the current during operation.

An auxiliary device used to control voltage and current in gas discharge lamps (such as fluorescent and mercury vapor bulbs).

1. A device used with a fluorescent and high intensity lamp, to provide the necessary circuit condition for starting and operation. 2. Any material used as non-structural fill or dead weight. 3. Heavy material, such as water, sand, or iron which has no function in a machine except increase of weight. 4. Crushed rock or gravel which is spread on a roof surface to form its final surface.

Ballast is a band from Montreal, Quebec. Their music is often classified as crust punk though some would disagree and categorize it as peace punk. The lyrics often deal with politics and the current state of the world but also with strong personal issues.

To steady, as a vessel, by putting heavy substances in the hold.

To keep steady; to steady, morally.

A controlled amount of weight. Functionally positioned, used to help traction or prevent wheelstands.

Weight used to give a boat proper stability and trim.

heavy material placed in a ship's hold to prevent it capsizing.

Heavy weight, seawater, which is necessary for stability/safety of a ship which is not carrying cargo.

Weights placed in the hulls of ships to make them more stable

Heavy substances loaded on a vessel to improve stability and trimming of a vessel.

Heavy weight placed low in the hull to improve stability.

Small pieces of steel which can be packed together densely and are used for adding weights to cranes, machinery, etc.

A weight added to the racecar to help the racecar meet NASCAR's weight specifications. The positioned in the frame to help improve the weight balance of the racecar.

This is heavy material that was stacked at the bottom of ships to keep it upright in the water. Usually large stones were used, but sometimes heavy chests of treasure were used. The ballast was placed down in the very center of the hold of a ship.

Heavy material (usually water or rocks) placed in a vessel's hold to maintain proper stability, trim, or draft. A vessel "in ballast" is carrying no commercial cargo and therefore is not earning any freight or revenue for the voyage.

heavy material such as the manatee's bone that gives stability in the water

Weight used to protect single-ply roofs or to prevent blow off of systems which are not adhered.

The heavy objects, such as stones, that balance the ship in the water.

Weights fixed on the cars to maximise its balance and bring it up to the minimum weight requirement.

A voyage during which the ship is not laden with cargo.

A substance, usually water, used to improve the stability and control the draft of a ship. A vessel is said to be “in ballast” when it is steaming without cargo and carrying water as Ballast which is discharged before loading at the next loading port.

1. Heavy material, usually lead or iron, placed in the bottom of a boat to give stability; 2. Weight at the foot of a keel

Weight used for balancing a vessel.

any substance, other than cargo, which is usually placed in the inner compartment of a vessel to produce a desired draft or trim.

bahl-list Any heavy material placed in a ship or the car of a hot-air balloon etc., to secure stability.

any heavy material used to stabilize a ship or airship

an attribute that tends to give stability in character and morals; something that steadies the mind or feelings

make steady with a ballast

A weight that is bolted or clamped onto bobsleighs with lighter crews to ensure every team and sled is of maximum and equal weight.

A weight that is bolted or clamped onto skeleton sleds with lighter sliders to ensure every sled is of maximum and equal weight.

A stabilizing element designed to limit the effect of any single loss on the experience modification. It is added to both the actual primary losses and the expected primary losses. The ballast value increases as expected losses increase. These values may be obtained from the Tables of Weighting and Ballast Values filed by each carrier.

sand, gravel or water carried by a ship for reasons of stability when she is without cargo. Most vessels are fitted with water tanks and pumps specially for this purpose. Before a ship enters the St. Lawrence Seaway, water ballast must be exchanged, i.e. pumped out and replaced with fresh water, to prevent the introduction of foreign plant and animal species.

Weight in a boat to give it stability and prevent over-heeling. Crew on the high side may be called movable ballast

heavy weight, often seawater, which gives a ship stability and improves handling when she is not carrying cargo. Such a ship is said to be steaming in ballast.

Heavy substance used to make weight adjustments.

Materials carried to improve the trim and the stability of the vessel. Vessels usually carry water in tanks as ballast. The tanks are specially designed for this purpose.

weight used to provide stability on the boat

Weight in the bottom of the hull of a boat, to add stability (righting moment).

Heavy material that is placed in the hold of a ship or the gondola of a balloon to enhance stability.

weight placed in the ship to keep her on an even keel when empty.

Weight carried by an aeroplane to increase the Wing Loading.

A heavy weight that gives a ship stability and improve handling when the vessel is not carrying cargo.

Heavy material, such as water, sand or metal which has no function in a machine except to increase its weight.

a circuit used to stabilize an electric current, for example, in a fluorescent light.

A very heavy material, such as lead or iron, placed in the keel of the boat, or in the bilge. It is used to provide stability. Oftentimes the crew is also a ballast - especially on smaller boats, or in a jocular way.

Non cargo load (generally see water) used to make a vessel without cargo heavier and more stable.

Extra weight carried for stability, usually lodged in the keel.

Weight that is added to the glider to make it go faster and/or stabilize it in heavier winds. Ballast is placed right on or slightly forward of the center of gravity of the glider.

Ballast is extra weight added to a glider to help it penetrate better in windy weather or to increase its speed. Ballast is usually added in tubes in the inner portion of the wings or in the fuselage at the center of gravity.

a device used to provide the starting voltage or to stabilize the current in a circuit. Commonly used for florescent and CFL type bulbs.

(Conventional) Additional weight carried low on a yacht to maximise the vessel's stability. Also see Water Ballast.

Heavy material placed on a ship to improve its stability.

heavy material (eg seawater, concrete or iron) usually placed in the base of a ship for achieving stability or to secure greatest possible economy of propelling power

something that gives stability.

A weight carried in an aeroplane, balloon or airship to trim it with respect to its centre of gravity or to alter its buoyancy. In aeroplanes, ballast usually takes the form of lead disks. In balloons and airships sand or water is usually carried as ballast, as they can be easily discharged.

A controlled amount of weight, functionally positioned, used to help a car meet class weight requirements.

Weights fixed around the car to maximise its balance and ensure the car is up to the minimum weight limit.

Heavy substances loaded by a vessel to improve stability. Seawater ballast is commonly loaded in most vessels in ballast tanks.

weight in the lower portion of a boat, used to add stability

A weight in the keel, usually lead, that holds the boat upright.

Extra weight added to the boat to make the wake bigger. Ballast can be people, fat sacks, lead, or anything else that's heavy. Some boats include Ballast systems which are built in systems that fill with water.

Weight added to the bottom of a boat to improve stability.

Extra weight in the hold

Heavy material, such as water, placed inside of a boat to steady it.

Material added to drag car chassis to alter weight distribution and/or bring drag car weight up to minimum class requirement.

Lead weights in the floor of the F1 cars bring them up to the minimum weight and help improve the balance of the F1 car in corners depending on where they are placed.

Extra weight carried low in a vessel to increase stability.

Anything heavy carried to give stability to a craft.

A device used to provide the starting voltage or to stabilize the current in a circuit. This is the part of a light bulb that has contact with the fixture in which it is placed.

heavy weighted material put in the lower parts of the ship to improve stability, could be shifted to one side or another to compensate for changes in cargo, etc. Usually of stone or junk iron.

Weight at the bottom of the boat to help keep it stable. Ballast can be placed inside the hull of the boat or externally in a keel.

Large tanks located in the bottom of the ship which when filled with water stabilize and right the ship.

Material that is added to a racing car chassis to change the weight distribution and/or increase the overall vehicle weight to the minimum class requirement.

Any solid or liquid weight carried in a vessel to increase the draught, to improve trim or to regulate stability.

Materials solely carried to improve the trim and the stability of the vessel. In vessels usually water is carried as ballast in tanks, specially designed for that purpose.

Weighted materials used as a counterweight to stabilize a boat

Stones (sometimes raised) underneath rail lines that help distribute weight and keep water away from the track.

Salt water pumped into various tanks on a ship to maintain a safe stability and stress condition.

A weight at the bottom of a boat to keep it stable. Ballasts can be placed inside the hull of the boat or externally in a keel.

Weights fixed around the car to maximise its balance and bring it up to the minimum weight limit.

Any solid or liquid weight placed in a ship to increase the draft, to change the trim, or to regulate the stability.

Heavy material or water placed in the lower holds of a ship or in strategically placed tanks along the sides to improve its stability.

Hard core used to provide a stable base and good drainage for the track. Typically granite Chipping's between 1-2 inches diameter are used, although other materials are not uncommon.

A layer of coarse stone, gravel, slag, etc., over which concrete is placed.

An anchoring material, such as rounded river rock, gravel, or pre-cast concrete pavers, which is used to hold single ply roofing membranes in place and to stabilize the roof system from wind uplift forces. (Also AGGREGATE.)

on real railroads, a layer of material--usually crushed rock, cinders, or gravel--on top of the roadbed that holds the ties in position and facilitates drainage. On a model railroad, it is simulated by fine gravel spread between the ties and alongside the track.

Layer of crushed rock placed on roadbed to keep track aligned and allow drainage.

Rough, unscreened gravel as used to form the bed of a railway or substratum for new roads.

Gravel or broken rock placed in a railroad bed.

Small rocks that make up the base of a railroad track.

Layer of material (usually crushed rock, cinders, or gravel) on top of the roadbed that holds the railroad ties in position and facilitates drainage. Also used to describe any extra material added to a locomotive to bring it up to a desired weight.

Flint and grit mix used for concrete.

Graded stone base used for drainage and support of the railway track.

A transformer used in light fixtures. Also, material placed over roofing to hold it down, such as gravel.

The base material into which the sleepers under the track is set.

Aggregate, concrete pavers or other material designed to prevent the wind from lifting a loose-laid roof system.

Railway ballast provides both the foundation and drainage for railway track. Many steam-era railways used ash, gravel or even shingle as ballast, but on important lines the LNWR used (expensive) crushed North Wales granite and made an advertising feature of its track as "dustless permanent way".

Gravel, slag or other heavy material used as a road bed to support cross ties and rails.

an anchoring material, such as aggregate, precast pavers, which employ the force of gravity to hold (or assist in holding) membranes in place.

Selected material placed on the roadbed for the purpose of holding the track in line.