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

Electronic ballasts diodes, transistors, resistors, capacitors, inductors, small size, light weight, saving copper and iron metal material. The Magnetic ballast is composed of silicon steel, enameled bulky weight, simple structure, in the core at about a coil. Enameled wire is copper wire. Old-fashioned fluorescent lamps at work, 220 VAC into the ballast - filament - the jump bubble - filament - go back to the 220​​-volt power supply circuit, the filament heating power heating lamp inside the mercury vapor for about 2 seconds, at the same time heat about 2 seconds after the jump bubble is powered internal contact is opened when the circuit instantly disconnected. Since the ballast inductance coil will induce a high voltage mercury vapor lamp inside breakdown conduction, generating ultraviolet radiation in the inner wall of the lamp above the phosphor coating to emit visible light when a sudden power failure. Lamp light, the voltage between the two lamp pins sharp decline to about 60-100 volts, the current sharp rise in ballast began to play the role of ballast, the core ballast above 140-160 volt voltage drop, limit the lamp current to rise, making it stable at 0.45 amps (40 watt lamp). Light feet above two small metal column is the terminal of the filament are interlinked. Lamp light, the current path is: 220 volts - ballast - lamp foot - inside the tube mercury vapor - light feet of 2 - 220 volt power supply circuit.