Is a ballast also an energy storage element? 5

Inductive ballasts that generate pulsed high voltages at the moment of power failure.

Mainly due to the instantaneous release, plus not much energy; Therefore, it is not yet an energy storage element.

The energy storage element should be similar to a battery or something.

Ballasts are not energy storage elements.

The ballast is an indispensable accessory for the operation of the gas discharge lamp

1. Generate high pressure and glow lamp.

2. After the lamp glows, it plays the role of ballast (current limiting) to make the lamp work normally and stably.

Ballast resistor is a fluorescent lamp to play a role in limiting the current and produce instantaneous high voltage equipment, it is buried in the silicon steel core wrapped enameled wire production, such a coil with iron core, in the moment when the power is turned off, it will self-induce high voltage, added to the electric bright core (filament) at both ends of the fluorescent tube. This action is carried out alternately, when the starter (jumping bubble) is closed, the filament of the lamp is turned on and heated by the current limiting of the ballast; When the starter is open, the ballast will induce high pressure to be added to the filament at both ends of the lamp, and the filament emits electrons to bombard the fluorescent powder on the wall of the tube. When the lamp emits light normally, the internal resistance becomes smaller, and the starter always maintains an open circuit state, so that the current can stably pass through the lamp and the ballast, so that the lamp emits light normally.

Because the ballast always has a current passing through when the fluorescent lamp is working, it is easy to vibrate, and it will cause the flames to heat up, so the fluorescent lamp with the ballast, especially when the quality of the ballast is not good, will produce a loud sound, and it will be easy to burn out after a long time. Ballasts are divided into electronic ballasts and inductive ballasts.

Ballast, town, suppression, restriction.

In fluorescent lamp circuits, the ballast works with the starter to produce the starter high voltage. Limit the lamp current after the glow.

Fluorescent lamps have negative resistance characteristics after they are turned on, so ballast is required.

The function of the ballast: it is a control device used for starting and limiting the current, because the fluorescent lamp has negative volt-ampere characteristics, it is necessary to match the ballast to start the discharge of the lamp and limit the ionization of the inert gas in the lamp and make the mercury vapor pressure rise, when the electrons bombard the ultraviolet rays generated after the mercury vapor discharge excite the fluorescent lamp and emit light, after the start is completed, the ballast plays the role of the current limiter, so that the lamp begins to work normally.

In the late 80s of the 20th century, the United States applied ring inductance ballasts to compact energy-saving fluorescent lamps, and in 1988, Midwest Toriod began mass production. Production began in China in the early 90s. Nowadays, ballasts are widely used in China.

It has the following main functions:

1. Energy-saving fluorescence.

The electronic ballast uses 20 60kHz frequency to supply the lamp, so that the light efficiency of the lamp is about 10% higher than the power frequency (according to the length of the 4-foot lamp), and its own power consumption is low, so that the total input power of the lamp is reduced by about 20%, which has a better energy-saving effect.

2. The luminescence is more stable.

It is conducive to improving visual resolution and improving efficacy; Reduce visual fatigue during continuous work and help protect eyesight. The starting point is more reliable. After preheating the lamp, the first starting point is successful, avoiding multiple starting points.

3. High power factor.

Fluorescent lamps above 25W that meet the national standard have a higher power factor than that. However, it should be noted that the harmonic limit specified by the national standard for lamps below 25W is so high that its power factor drops to.

4. It can be dimmed.

For places that require dimming, such as places that originally use incandescent lamps or tungsten halogen lamps for dimming, they are replaced by high-efficiency fluorescent lamps with dimmable electronic ballasts, which can achieve a wide range of dimming at 2% and 100%.

Generally, the household voltage is 220V, and the fluorescent lamp can only be started when it exceeds 220V, and the resistance and inductance of the ballast are connected in series with the fluorescent lamp, so that the line voltage exceeds 220V, and the fluorescent lamp can be started.

The role of the ballast is mainly to generate high pressure by self-induction, and now many lamps and lanterns will be installed with ballasts, which mainly use its own role, and then the lamps and lanterns change, and then play the role of lighting.

The function of the ballast is to convert the 220V AC power to a voltage suitable for the operation of the lamp, similar to the power adapter.

The ballast is the equipment that plays the role of limiting the current and produces the instantaneous high voltage on the fluorescent lamp, it is made of winding enameled wire on the iron core made of silicon steel, such a coil with the iron core, when the power is turned off in an instant, it will self-induce high voltage, and it is added to the electrodes (filaments) at both ends of the fluorescent tube.

The device on the fluorescent lamp line that is used to generate instantaneous high voltage to start the fluorescent lamp, and after starting, and limit the current of the fluorescent lamp is called a ballast.

Ballasts are divided into electronic ballasts and inductive ballasts. Inductive ballast: The current in the inductive ballast is suddenly interrupted by using the starter to generate a high back EMF, and the lamp is lit after superimposing it with the external power supply; After the lamp is started, the inductor plays the role of limiting the current to avoid excessive current in the lamp, so it has the name "ballast".

Electronic ballast: 220V alternating current is rectified and inverted into high-frequency current, and the lamp is directly lit. Due to the high frequency, the flicker phenomenon of the lamp is effectively eliminated, and it is turned on and on, without the process of ignition.

It is an electrical component that requires instantaneous high-voltage start-up to provide this instantaneous high voltage during the start-up process of some electrical appliances. For example, lighting tubes, high-pressure sodium lamps, and high-pressure mercury lamps require ballasts when they are activated.

The ballast is the equipment that plays the role of limiting the current and produces the instantaneous high voltage on the fluorescent lamp, it is made of winding enameled wire on the iron core made of silicon steel, such a coil with the iron core, when the power is turned off in an instant, it will self-induce high voltage, and it is added to the electrodes (filaments) at both ends of the fluorescent tube. Ballasts are divided into electronic ballasts and inductive ballasts.

The function of the ballast is twofold: one is to generate high voltage at the moment when the ignitor disconnects the fluorescent lamp circuit, which penetrates the mercury vapor circuit in the fluorescent lamp tube and makes the filament circuit conductive; Second, the self-inductive electromotive force in the ballast hinders the change of alternating current so that the current flowing through the lamp is not excessive.