Dad sent us all an email about an electronic transformer output he captured on his smart phone and converted to Flash format:
Having replaced a 240V/12V electronic transformer for a down-light, I was curious as to the output waveform. I fixed the transformer (it was a dry-joint on the printed circuit board) and connected a 12V, 21W auto globe to the output, along with my cathode ray oscilloscope (CRO). See the attached for the output waveform. The fuzziness is as it is: the CRO focus was set to give the sharpest trace. It’s a bit shaky, because I used the phone camera video mode. I then converted the resulting 1.5MB MP4 video file to Flash SWF format. Setting were vertical 5V/DIV giving 20V peak or 14V RMS, horizontal 5ms/DIV or 20ms/cycle, equating to 50Hz (naturally – it would have been odd if it didn’t!)
MY DAD IS AWESOME!!! I will try and post his final product when I can get Flash working properly.