The function and principle of the regenerator and the ballast
At the moment of the disconnection, the current of the circuit is suddenly cut off, and the ballast generates a large self-inductance, which is applied to both ends of the tube with the power supply voltage. The large amount of electrons emitted when the filament is heated, under high voltage at both ends of the lamp, is moving at maximum speed from low voltage to high potential end. In the process of accelerating motion, the argon molecules in the collision tube are rapidly ionized. Argon is ionized by heat, which causes mercury to produce steam, and the mercury vapor is ionized and emits a strong ultraviolet light.
The principle of the regenerator is that when the switch is switched on, the power voltage is immediately passed through the ballast and the lamp filament to the two poles of the regenerator. The voltage of 220 volts immediately disassociates the noble gases of the regenerator, producing glow discharge. The heat makes the bimetallic strip is heated in the process of inflation, because the degree of expansion of action contact, U still contact expansion elongation, contact with the static contact and processing circuit, the ballast poles of the contact. The current flows through the ballast, the regenerator, and the two ends of the filament. At this time, due to the closure between the starter, zero voltage between the poles, the starter of the neon stop conductive, glow discharge disappeared, led to the decrease of the tube temperature, dynamic contact cooling contraction, U two contact plate separation, circuit automatically disconnect.
The ballast mainly produces high voltage on both ends of the tube, the regenerator is instantaneous discharge.
The regenerator is a device that is activated by the inductor, which is not used after the lamp is started, and it will not affect the normal operation of the lamp. The effect of the ballast is to limit the current of the lamp, which is a negative resistance characteristic and must have a ballast to limit the current of the lamp
