Gas discharge lamps require what type of electrical power to minimize flicker?

• A. Clean power
• B. Dirty power
• C. High-frequency power
• D. Low-frequency power

Answer: (A)

Gas discharge lamps produce light from an electric arc, so the brightness directly follows the current. Flicker happens when the electrical supply isn’t steady—voltage جودة with noise, harmonics, or transient changes causes the arc to brighten and dim. Clean power means the voltage and current are stable and free from these distortions, so the arc current remains nearly constant and the light output stays steady. That’s why clean power best minimizes flicker. Dirty power would introduce fluctuations and worsen flicker, and while some designs use high-frequency drive to reduce flicker in certain lamps, the fundamental way to minimize flicker is maintaining clean, well-regulated power.