China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

Metal halide (MH) lamps, as with all HID lamps, use a ballast to regulate circuit conditions – voltage, current, and waveform – for starting and operating the device.The first lighting ballast technology used to operate MH lamps were electromagnetic, also known also as a “core and coil” ballast for bulky, heavy, magnetic core of laminated steel plates wrapped in copper windings.All lighting fixtures consist of at least lamp(s), porcelain lamp holder,core and coil ballast and internal wiring.

In a fluorescent lighting system, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Without a ballast to limit its current, a fluorescent lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw. Within a second the lamp would overheat and burn out. During lamp starting, the ballast must briefly supply high voltage to establish an arc between the two lamp electrodes. Once the arc is established, the ballast quickly reduces the voltage and regulates the electric current to produce a steady light output.