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Voltage Regulator Power Luoya Method Circuit

2014-11-18 05:54  
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Voltage Regulator Power Luoya Method Circuit
The picture shows the Luoya method circuit which is suitable for the 220V input. The picture (b) is suitable for 380V input. For example in the circuit shown in picture (a), the R1 is starting resistance. When the input voltage is connected, as the special difference of VT1 and VT2, if the VT1 is conducted firstly, the transformer T1 would process the field excitation and the VT1 would be conducted rapidly. If T1 is in the magnetic saturation mode, the VT1 would change to be disconnected. So the T1 would generate the opposing electromotive force which would be through the transformer's feedback winding to make VT2's base electrode get the positive bias voltage, so that it would be conducted. This repeated actions would make the transformer T1 magnetic flux have the continuous oscillation.