Dear forum members,
I bought a single phase power bridge rectifier to rectify the tension (socket on the wall) that I thought it were provided by a single a phase and the neutral conductor.
When I visualised the output of the bridge by an oscilloscope, with great surprise I found out that the waveform was rather different from the usual full-wave rectified curve. Only after some tests I realiesed that the electric power is not provided by a phase conductor at 230 V and a neutral conductor, but with two phases at 115 V with a shift of 120 degrees between them in order to obtain 230 V. The anomalous output is due to the fact that because of the two phases, there are certain intervals of time when the two couples of the bridge are both in conduction.
I am a bit puzzled as to how I may obtain a fully rectified waveform (as it is usually reported in the textbooks) with this bridge. I do not know whether I should get a triple phase bridge or maybe use a transformer with centre tap.
Could you please give me some hints as I am stuck.
Thanks a lot in advance.
I bought a single phase power bridge rectifier to rectify the tension (socket on the wall) that I thought it were provided by a single a phase and the neutral conductor.
When I visualised the output of the bridge by an oscilloscope, with great surprise I found out that the waveform was rather different from the usual full-wave rectified curve. Only after some tests I realiesed that the electric power is not provided by a phase conductor at 230 V and a neutral conductor, but with two phases at 115 V with a shift of 120 degrees between them in order to obtain 230 V. The anomalous output is due to the fact that because of the two phases, there are certain intervals of time when the two couples of the bridge are both in conduction.
I am a bit puzzled as to how I may obtain a fully rectified waveform (as it is usually reported in the textbooks) with this bridge. I do not know whether I should get a triple phase bridge or maybe use a transformer with centre tap.
Could you please give me some hints as I am stuck.
Thanks a lot in advance.