Electronic transformer is different from electronic ballast
Electronic transformer is corresponding to your load of uninterrupted power supply, according to your designed different load parameters, electronic rectifier is needless to say. Transformer transformer, ac variable exchange; The rectifier
The transformer is simply to change the voltage size, and the electronic ballast is essentially a direct current that turns the alternating current into a stable one
The power factor should be higher than the factor of the inductor. Electronic switching pulse principle. There is basically no iron loss and copper in the circuit. These electronic ballasts can also be applied to fluorescent lamps, provided they need to understand the power of electronic ballast. However, 30 w electronic ballast used 20 w fluorescent tube, there is no problem, electronic ballast, 85 w use 40 w fluorescent tube, also have no problem (these tested in person) and vice. The ballast power is small, the power of the daylight lamp tube is big, such short time work, the lamp tube hair is dark. When time works, the triode will heat up and burst.
Electronic transformers and electronic ballasts in front of the self-excited oscillation circuit are basically the same, but the back of the output circuit, electronic ballast self-excited oscillation after high-frequency voltage is connected to a inductance, used for energy storage light fluorescent lamp, electronic transformer shock after high-frequency voltage is connected to a high-frequency transformer, to about 300 v high frequency voltage into the 12 v or so high frequency alternating current (ac), and then used to light up the 12 v halogen bulbs. Electronic ballast can be converted into electronic transformers with simple modifications, and the high frequency voltage of the output can be turned into direct current through the schottky diode rectifier. Electronic transformers do not have a voltage regulator, and the output voltage varies according to the load, so this circuit is called an electronic transformer instead of a switching power supply.
Upstairs brothers look at carefully, the original poster is ballast is not rectifier Electronic transformer is usually refers to the switching power supply, in some cases it can take the place of traditional power frequency transformer for power supply, so called electronic transformer. The power of the phone charger and the computer. And ballast and it is not a thing, is the drive gas discharge lamp, ballast is common fluorescent lamp ballasts, inductive and electronic type two kinds, the lamp is started to create a moment of high voltage make gas ionization in the tubes, and then control the lamp current illuminates its stability. Electronic ballast is similar to a half-bridge inverter circuit.
