Hello everyone,
I'm getting more comfortable with PicBasic Pro now and have some successful (albeit fairly simple) projects under my belt. (Still feel quite intimidated by you pros sometimes though...) I have a project that I wonder if a PIC is suitable for, keeping in mind I'm still more comfortable with PICBasic Pro than I am very complex circuits. I really just need to know if it is doable or if I'm barking up the wrong tree here. Any other simple ideas are welcomed.
I need to sense zero crossing of a 60hz sine wave (regular US outlet power) and turn one PIC port on and another off AT EVERY crossing. So, 120 times every second. Although this does not have to be exactly at zero, the closer the better.
The high/low pin(s) will turn on/off a set of IGBTs which will let the current for that (rectified) pulse through. In other words, there are two different paths for the current and it switches at each pulse. Clear as mud?
There are many reasons I would like to keep this in the PIC environment if it is possible, I would just like some feedback before I start turning my den into what my wife calls a "mad scientist lab."
I am open to using any PIC model - cost is not a huge factor in this experiment. Oh yeah, if you were wondering the obvious, a diodes-only circuit design doesn't cut it.
Thanks in advance,
Chris
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