Do gas discharge lamps require a ballast?

Do gas discharge lamps require a ballast?

• A. Yes
• B. No
• C. Sometimes
• D. Only with certain types

Answer: (A)

Gas discharge lamps need a ballast to start and to stay operating safely. When the gas is ionized, the lamp’s resistance collapses and current would surge if connected directly to the supply. The ballast provides the high initial voltage to strike the arc and then limits the current to a safe, steady level, which also helps prevent flicker and protects the lamp and circuitry. Even lamps that include the ballast inside the lamp still rely on that ballast function, just implemented internally. So, they do require a ballast.

Gas discharge lamps need a ballast to start and to stay operating safely. When the gas is ionized, the lamp’s resistance collapses and current would surge if connected directly to the supply. The ballast provides the high initial voltage to strike the arc and then limits the current to a safe, steady level, which also helps prevent flicker and protects the lamp and circuitry. Even lamps that include the ballast inside the lamp still rely on that ballast function, just implemented internally. So, they do require a ballast.