Can LED tubes be used with electronic ballasts?
Electronic ballasts are used to start fluorescent tubes or energy-saving lamps. The principle is that the power frequency power supply is affected by radio frequency interference (RFI) filters, full wave rectification and passive (or active) power factor correctors (PPFC or APFC). After that, it becomes a DC power supply. The high-frequency AC power of 20K-100KHZ is output through the DC/AC converter, and applied to the LC series resonant circuit connected to the lamp to heat the filament, while the resonant high voltage is generated on the capacitor, which is applied to both ends of the lamp tube, but the lamp The tube is made into a "discharge" and "on" state, and then enters the lighting state. At this time, the frequency inductor is used to limit the current increase to ensure that the lamp can obtain the lamp voltage and lamp current required for normal operation. The LED tube itself is a low-voltage DC power supply and does not need to use high voltage. You said the inductive rectifier should be a transformer, the voltage of 220v is stepped down by rectification and filtering to the voltage required by the LED itself. (The specific voltage depends on the application method of the LED) The output of the inductive ballast lamp is AC 50hz power supply. It only has a starting effect on the lamp and the voltage is phase shifted to the current. The output of the electronic ballast lamp is high frequency and the AC output voltage is also different (there is also a start function). As for why the high frequency is better, it is due to the problem of electrical efficiency and inductance. And the LED light (assuming there is a power driver inside), it is necessary to look at the input voltage and frequency range required by the power driver. It is the output voltage and frequency of the above inductive ballasts and electronic ballasts. What is a magnetic ballast, it is a transformer, DC output; no, fluorescent lamps are gas ignition, LED is an electronic original, the principle is different, not universal.
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