News

High pressure sodium lamp discharge materials vapor pressure is very substantial, namely higher atomic density of sodium, sodium atoms and electron collision between the quantity of regular, the resonance radiation broadening of spectral lines and also other noticeable spectrum of radiation, so the high-pressure sodium lamp light shade is better than that of very low strain sodium lamp. High pressure sodium lamp is really a kind of substantial intensity gas discharge lamp. Because of the detrimental resistance characteristics of fuel discharge lamps, should the lighting alone obtained the power grid, the functioning state is unstable, with all the discharge approach continues, it is going to cause circuit existing rises indefinitely, till the last light or circuit components and parts is movement burning high pressure sodium lamp as well as other gasoline discharge bulb, operate is arc discharge state, V-I characteristic curve towards the detrimental slope, i.e. lighting existing rise, plus the voltage utilized to a bulb dropped.

So that you can assure the steady operation of your light bulb, a circuit must be linked in series using a circuit without a positive end to stability the negative resistance. Resistors, capacitors, inductors, etc., are prepared for being constrained to movement. Resistive ballast has the advantages of small dimension, value low cost, and high pressure sodium lamp supporting use will occur is hard to get started, get the job done resistance generates a high heat, have greater space for heat dissipation and consumption power is quite big, it's going to make the circuit lighting efficiency decreased. It truly is typically made use of while in the DC circuit, the usage of a hundred AC circuit while in the light in the phenomenon of obvious. Capacitive ballast although not as resistive ballast its consumption energy, temperature rise is very low, from the reduced frequency electrical power provide, charging the capacitor, pulse peak latest, bring about good harm for the electrode, lights flashing, have an impact on the service lifestyle with the lamp bulb; work in high frequency circuit, voltage fluctuation can reach the ideal state, become an excellent ballast.

Core ballast reduction is modest, secure impedance, the impedance bacteria primality small deviation, extended support lifestyle, secure lighting than resistive ballast good, existing and high pressure sodium lamp supporting use of ballast are inductive ballast. Its drawbacks are greater than benzene and higher charges. Moreover, electronic ballast has begun to appear, at current the rate pricey, dependability just isn't as well as the high-voltage sodium lamp is matched, except for unique occasions, below regular conditions are hardly ever employed. As a result, high pressure sodium lamp and lamp ballast series has to be corresponding specifications prior to use. High pressure sodium lamp lighting circuit is really a nonlinear circuit, the electrical power component is lower, so from the network consider a compensation capacitor is linked to improve the energy factor of the network