Light ballasts work by illuminating bulb chambers filled with gas and regulating the current flow of the lamp. Ballast controls use either simple fixed resistors or more complex control systems.Know More
There are several types of light ballasts. Digital lamp ballasts are equipped with microprocessing circuits for starting power efficiency and regulating electric flow sustainability in digital high-intensity lights. These ballasts can be joined to motion detectors to dampen light in areas that are not being used.
Electronic ballasts adjust electric current power frequency up to 20 kilohertz higher than the normal 60 kilohertz to eliminate flickering in fluorescent tubes. Magnetic ballasts use a magnetic capacitor attached to a power inductor to manage the electrical power of the lamp and can sustain large installations. Instant-start ballasts do not heat the fluorescent tube when starting but instead provide a jolt of 600 volts of energy, which makes these ballasts better suited to areas where the light is rarely turned off.
Rapid-start ballasts both warm the bulb and apply electricity to the gas, and they are useful in areas where the brightness is variable. Programmed-start fluorescent ballasts improve on the rapid-start ballasts by providing more steady heat to the filaments and bulb cathodes. This ensures the light can be turned off and on over a long period of time and makes the bulb more sustainable.Learn more about Lighting
According to Union College, an incandescent light bulb operates by acting as the load in an electric circuit. The glass bulb contains a wire which heats up with electrical current, and the heat causes the wire to glow white-hot and emit visible light.Full Answer >
If fluorescent lights begin to buzz and flicker, the ballast is often the problem and replacing it eliminates these occurrences. Replacement ballasts are available at most hardware stores; however, they are often expensive, so consider replacing the entire fixture.Full Answer >
A fluorescent light uses a tube of excited mercury gas to illuminate a phosphorescent coating, producing visible light. Fluorescent lights use less energy, produce less heat and tend to last longer than incandescent light bulbs.Full Answer >
To rewire a lamp, remove the lamp, cover and socket, then remove the old cords and fix the new ones. Use a folded towel, a screw driver, electrical tape, wire cutters, strippers and a new lamp cord to accomplish this task.Full Answer >