Wiring of high pressure mercury lamp and high pressure sodium lampb

High-pressure mercury lamps, also known as high-pressure mercury lamps, are available in three types: external ballast, self-ballasted
and reflective . The reflective high-pressure mercury lamp is only coated with an aluminum reflective layer on the upper inner wall of the glass bulb
, and does not require a lampshade when used. Self-ballasted high-pressure mercury lamps do not require a ballast. The wiring of the high-pressure mercury lamp
is shown in Figure 2-5 (a). The wiring of the high-pressure sodium lamp is shown in Figure 2-5 (b).