Hi All
I am currently trying to make repairs to a Battery Charger, basically it seems to be a typical forward convertor.
I have identified some obvious blown components and replaced them but still having some trouble getting it to work.
I started debugging using an osciloscope starting with the primary side of the Rectifier. On the DC side of the rectifier i can;t seem to get the text book waveform. I have tested teh rectifier using a multimeter to test the 4 diodes and it checks out fine, i have also replaced the rectifier. #
I have posted the waveforms i get when i place the probe on the + side of the rectifier and - side of the rectifier.
Note that i can't connect the "ground" or shield of the oscilloscope probe as it shorts out the fuse in the power supply, so the signals i am gettinga re probably with respect to the AC earth.
Would appreciate any suggestions.
I am currently trying to make repairs to a Battery Charger, basically it seems to be a typical forward convertor.
I have identified some obvious blown components and replaced them but still having some trouble getting it to work.
I started debugging using an osciloscope starting with the primary side of the Rectifier. On the DC side of the rectifier i can;t seem to get the text book waveform. I have tested teh rectifier using a multimeter to test the 4 diodes and it checks out fine, i have also replaced the rectifier. #
I have posted the waveforms i get when i place the probe on the + side of the rectifier and - side of the rectifier.
Note that i can't connect the "ground" or shield of the oscilloscope probe as it shorts out the fuse in the power supply, so the signals i am gettinga re probably with respect to the AC earth.
Would appreciate any suggestions.
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