how to integrate a microcontroller with either a CT or a power meter to read values for automation

Working with either an LPC 2129 or an 8051 microcontroller, is there a way to make get inputs from either a CT or power meter? 

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Yes, of course there is. You need an A/D converter and an interface.

Steve

knillzbaba (author)  steveastrouk2 years ago

hello steve, what type of interface? and the A/D converter connects the CT to the microcontroller?

Do you want a real CT or a Hall sensor ? for amateur stuff, I'd stick with Hall.
knillzbaba (author)  steveastrouk2 years ago

Yea, hall. How do i go about that?

Pick a sensor.

You get AC off the sensor which needs to be rectified. Look for a "perfect rectifier" circuit, using an op-amp. Take THAT into an RC filter, for mean measurements, or straight into the ADC for clever stuff, where you integrate it numerically.

knillzbaba (author)  steveastrouk2 years ago

Yea, hall. How do i go about that?