Analysis of the difference between ordinary lamps and LED lamps
LED tube
The LED tube made of LED has the same appearance and structure as the traditional fluorescent tube, but the inside of the LED tube is different, and the semiconductor solid-state light-emitting device-LED light-emitting diode is used in the tube.
Advantages of LED tubes: LED tubes are characterized by high quality, durability and energy saving, with a large projection angle adjustment range, and the brightness of 15W is equivalent to that of ordinary 40W fluorescent lamps. High temperature resistance, moisture-proof, waterproof, and leakage-proof. The operating voltage is: 110V, 220V optional, and the outer cover can be made of glass or PC. The lamp holder is the same as an ordinary fluorescent lamp.
LED tube adopts the latest LED light source technology, digital appearance design, energy saving up to 70% or more, 12W LED tube light intensity is equivalent to 40W fluorescent tube (used for ballast and starter, 36W fluorescent tube real Power consumption is 42W to 44W). The life of LED fluorescent tubes is more than 10 times that of ordinary tubes, and it is almost maintenance-free, and there is no need to replace the tubes, LED lamp ballasts, and starters frequently. The green and environmentally friendly semiconductor electric light source has soft light and pure spectrum, which is beneficial to the user's vision protection and physical health. The 6000K cold light source gives people a visually cool feeling, and the humanized illuminance difference design helps to concentrate and improve efficiency. It is a real green environmental protection lighting source.
The old-fashioned ordinary fluorescent lamp bracket has been installed. First remove the fluorescent tube and the starter, and then replace it with the newly purchased LED tube. It can be used directly after power on. Note that there are two original LED tube brackets: one inductive ballast, two Electronic ballast.
There is no need to make any modification to the inductive ballast, but the electronic ballast must cut all the wires, remove the electronic ballast, and connect the neutral wire and the live wire to the two ends of the lamp holder respectively. The advantage of replacing the LED tube is that the circuit does not need to be modified, the power consumption is very low, the service life is long, and the tube has no special temperature. Thanks!
Ordinary fluorescent tube
The appearance of ordinary fluorescent tubes: thin and long, unlike some bulbs, which are round.
Fluorescent lamp structure and function: There is a filament at each end of the fluorescent lamp. The tube is filled with traces of argon and light mercury vapor. The inner wall of the tube is coated with fluorescent powder. When the gas between the two filaments is conductive, it emits ultraviolet rays to make the fluorescent powder. Emits soft visible light.
Fluorescent lamp working characteristics: when the lamp starts to ignite, a high voltage is required, and only a small current is allowed to pass when it is normally illuminated. At this time, the two voltages of the lamp are lower than the power supply voltage.
The two ends of the fluorescent tube are equipped with filaments, and the inner wall of the glass tube is coated with a uniform thin fluorescent powder. After the tube is evacuated to a vacuum of 10-3-10-4 mmHg, a small amount of inert gas is injected, and a small amount of inert gas is injected at the same time. Liquid mercury. Inductive ballast is an iron core inductive coil. The nature of the inductance is that when the current in the coil changes, it will cause changes in the magnetic flux in the coil, resulting in induced electromotive force. Its direction is opposite to the direction of the current, thus hindering The current changes.
The starter acts as a switch in the circuit. It is formed by a neon discharge tube in parallel with a capacitor. The function of the capacitor is to eliminate electromagnetic interference to the power supply and form an oscillation loop with the ballast to increase the starting pulse voltage amplitude. One electrode in the discharge tube is composed of a bimetallic sheet, which is heated by neon bulb discharge, so that when the bimetallic sheet is opened and closed, it causes a sudden change in the current of the inductive ballast and generates a high-voltage pulse to be applied to both ends of the tube.
When the fluorescent lamp is connected to the circuit, the glow discharge starts between the two electrodes of the starter, causing the bimetallic sheet to heat and expand and contact the static contact electrode, so the power supply, the LED lighting LED lamp ballast, the filament and the starter are formed A closed loop, the current preheats the filament, when the heating time is 1-3 seconds, the glow discharge between the two electrodes of the starter is extinguished, and then the bimetallic plate cools and disconnects from the static contact. The moment the electrode is disconnected, the current in the circuit suddenly disappears, so the ballast generates a high-voltage pulse, which is superimposed with the power supply and added to both ends of the lamp tube to ionize the inert gas in the tube and cause arc discharge. During the light-emitting process, the self-inductance of the ballast also plays a stable electric
