HID lamps have distinct forms, in accordance towards the kind of lamp and its application desires, is often configured in numerous varieties of ballast circuit, so as to receive the most beneficial matching ballast and lamp. The commonly utilised HID lamps for general lighting as being a high-pressure mercury lamp, high-pressure sodium lamp and metal halide lamp. High pressure mercury lamp HID lamp is during the earliest improvement, secure product effectiveness, supporting mature ballast circuit. High pressure sodium lamp and metal halide lamp is present day development of new large efficiency energy-saving light source, the specifications for ballast and lamp has superior matching, to realize much better extensive result of high pressure sodium lamp and high pressure mercury lamp inside the functionality of various, high pressure sodium lamp not merely mercury, but additionally full of sodium, doing work in the light, sodium and mercury to type storage of liquid sodium and mercury fuel inside the discharge tube cold finish element. High pressure sodium lamp power during its lifetime, with all the adjust of your lamp voltage modify. The high-pressure mercury lamp (HPML) and diverse high pressure mercury lamp energy improvements within the lamp voltage reasonably remained secure, due to the fact underneath the high pressure mercury lamp mercury vapor strain in saturated ailment.
High pressure mercury ballast doing work principle: when the energy supply is switched on, beloved voltage concerning the ignition electrode and adjacent principal electrode and add among the 2 principal electrodes. As a result of ignition electrode and adjacent electrodes near, voltage and right after in between the two electrodes created glow discharge, make the tube temperature rise, then between the 2 major electrodes made arc discharge (breakdown).
With all the arc discharge in between the key electrodes, mercury tube discharge lamp will slowly gasification, secure function. Discharge amongst the primary electrodes can produce noticeable light and ultraviolet light. Ultraviolet light to stimulate the inner wall of your glass shell with the fluorescent powder, issued a near to the visible light with the sun. For the reason that ignitor is connected in series having a good deal of resistance, once the most important electrode arc discharge is generated, ignition voltage concerning the electrode along with the adjacent key electrode to produce glow discharge and consequently ignitor stopped functioning, lamp, quartz discharge pressure mercury vapor in the tube to a, in order that the lamp is a high-pressure mercury lamp utilizing the lamp, lights can’t instantly commenced once more, and also to the cooling 5—10MIN. lighting mercury vapor stress going down, then ignite once again.