So why is it called a compact light bulb and how does it save power?
According to the technician of Eliton Lamp Joint Stock Company, compact lamps are actually fluorescent lamps
small capacity, folded U-shaped glass tube, 2U, 3U or collapsible twisted tube, nearly the same size as ordinary incandescent bulbs.
Because of its small size, it is called compact in English and currently there is no Vietnamese name so it is still temporarily used in English name or transliteration (com - pắc).
The inner structure of the lamp is a glass tube coated with a new type of fluorescent powder, which is better than the one used in previous fluorescent bulbs, so it emits more light and matches the feel of the human eye. The lamp uses electronic ballasts to start and maintain a stable light, creating an electric current that fluctuates tens of thousands of times a second so it does not cause the phenomenon of flickering light, causing eyestrain like conventional fluorescent lights.
Compact lamps emit 5 times more light than incandescent lamps of the same capacity. Therefore, replacing incandescent lamps with compact lamps will save about 80% of electricity consumption.
In addition to compact lamps, there are many other types of high-efficiency light bulbs, such as new fluorescent lamps T8, T5, high-pressure and low-pressure sodium lamps, high-pressure halide lamps, white light-emitting diodes and LEDs.