Which is most PBP-Friendly external ADC?

[Ioannis]

I think there will be so many data to process with a PIC. I do not know what exact processing this will be but I feel it will be very intensive with massive data manipulation...

Ioannis

[CuriousOne]

I want to measure AC voltage without rectification, but as I see, all these ADC have 50/60Hz rejection....

[HenrikOlsson]

Perhaps the ADS7028?
It's a 12bit converter but it has a built in RMS-module producing a 16 bit true RMS result. But yeah, you going to have to sit down with the datasheet to get it going.

[tumbleweed]

I'm curious as to why you would want/need microvolt resolution to measure the AC voltage?

[amgen]

I'm curious as to why you would want/need microvolt resolution to measure the AC voltage?

That is a good question, but on that subject, I have been wondering how the solar panel 'micro inverters' or whatever other method they use to introduce the current from the solar panels directly into the main incoming power/voltage/current......
With synchronizing 2 generators, it is easy to vary load from each by switching them together when 'in-phase' where they 'lock together' then increase or decrease the governor speed setting to vary how much watts or killo=watts each unit carry.

[tumbleweed]

It you're trying to sync two AC signals I would think the easiest/most reliable way would be to use the zero-crossings.

[amgen]

I don't want to infringe on his post here........

It you're trying to sync two AC signals I would think the easiest/most reliable way would be to use the zero-crossings.

The solar makes DC voltage, sometimes they stack the panels to get say 120 VDC or more, then somehow (with inverters that use PWM) introduce current onto/into the pure sine wave of the utility ???

[CuriousOne]

I want to make myself a fast, at least 30fps screen update multimeter, which will have no range switching (either manual or automatic), and will have decent resolution in 0.1V-600V range. I already built one using built-in ADC of PIC16F1939, but 10 bits of resolution are definitely not good enough.

By fast sampling the input voltage, I guess, I can measure AC voltage too, without additional losses caused by rectification.