The energy-saving lamp glows dim red when it is first turned on, and it will light up after a while. Why? Will it consume too much power?

The lighting principle of tricolor energy-saving lamps is the same as that of fluorescent lamps.

It is electrons that bombard mercury atoms, causing them to emit ultraviolet rays, and then excite phosphors.

When the weather is cold, the amount of mercury in the lamp tube is less, that is, there are fewer mercury atoms, which makes the ultraviolet rays less and the lamp dim. Because the lamp is on, the temperature of the lamp tube is gradually increased by the electron flow, and the amount of liquid mercury or mercury pills in the lamp tube is vaporized with the increase, and the lamp becomes normal.

This process will hardly increase electricity consumption.