I have now tried the h11L1 and h11aa1 presumably zero crossing detectors. Both detectors give a long high pulse of about 1.9ms and low pulse of about 8ms for a 240vac 50hz supply. Pretty useless if you want phase control of the mains when a half wave is 10ms long.
I had designed my own zero crossing circuit which gives a low pulse of only .28ms. But the circuit is a little complicated so I was looking for something a bit simpler. The pulse length I measured with Arduinos pulse in function.
Has anybody got a nice simple zero cross detector or know of one which will give a short pulse at zero crossing similar to the pulse I get from my ZVC.
I had designed my own zero crossing circuit which gives a low pulse of only .28ms. But the circuit is a little complicated so I was looking for something a bit simpler. The pulse length I measured with Arduinos pulse in function.
Has anybody got a nice simple zero cross detector or know of one which will give a short pulse at zero crossing similar to the pulse I get from my ZVC.