ronald_jansen
New Member
Ok, it was indeed the zero crossing detection which failed.
I attached a schematic. The problem is, that I get some sort of drop-outs in the resulting signal.
I added C27 today. This should have been there all along (shame on me), but it does not seem to completely solve the problem.
I set the software to supply a single phase (= one positive+ one negative) each 200ms. appr. 19 out of 20 times this works and then either a pulse is skipped, or a double pulse is provided.
I am also having troubles to get the oscilloscope to trigger on the mains current measurement.
I ordered for a current sense transformer so I can trigger on the zero crossing signal and view the mains current at the same time.
Hopefully I will be able to find out more soon.
I attached a schematic. The problem is, that I get some sort of drop-outs in the resulting signal.
I added C27 today. This should have been there all along (shame on me), but it does not seem to completely solve the problem.
I set the software to supply a single phase (= one positive+ one negative) each 200ms. appr. 19 out of 20 times this works and then either a pulse is skipped, or a double pulse is provided.
I am also having troubles to get the oscilloscope to trigger on the mains current measurement.
I ordered for a current sense transformer so I can trigger on the zero crossing signal and view the mains current at the same time.
Hopefully I will be able to find out more soon.