Fluorescent materials when subjected to electromagnetic radiations of particular wave length, gets excited and in turn gives out radiations at some other wavelength. This is the working principle behind fluorescent lamps. These lamps are widely used in homes as they have higher efficiency and life time is almost 3 times of those of filament lamps.
The Stroboscopic Effect in Fluorescent lamp is a phenomenon which causes running or moving equipment to appear stationary or appear to be operating slower than they actually are.
What is Stroboscopic Effect?
Danger of Stroboscopic Effect
- If the industry is supplied with three phase supply, adjacent lamps should be fed with different phase so that the zero instants of the two lamps will not be same.
- Fluorescent lamps around rotating or moving machinery, two lamps powered by two different phases should be used. This ensures that both the lamps do not flicker due to the zero crossing at the same time.
- If single phase supply is only available, then connection of two adjacent lamps are made such that the two lamps are connected in parallel with the supply and in one lamp connection a capacitor or condenser is kept in series with the choke. This makes a phase shift thereby eliminating stroboscopic effect