Swys
Junior Member level 1
ade7753
Hi all,
I have abandoned my quest to build an energy meter completely from scratch since I've found out that you get such nice energy meter IC's such as the ADE7753.
I now want to interface with this device with a PIC18F452 (primarily because this is the model I have lying around). I have one question...for now:
I am going to read the current with a CT and the voltage with a voltage divider. When I look on the datasheet (specifically figure 30) I see that they indicate that the ground of the voltage divider is the same ground of the line voltage. In other words it is the neutral line. As a matter of fact, it seems to me as if the ground of the whole device (digital and analog part) is connected to neutral. Iwould like to power this project with a seperate power source (regulated with an LM7805 regulator), but does this then mean that the negative of my battery, the ground of the regulator and microcontroller, etc. should be connected to neutral?
Thanks in advance for your help
Hi all,
I have abandoned my quest to build an energy meter completely from scratch since I've found out that you get such nice energy meter IC's such as the ADE7753.
I now want to interface with this device with a PIC18F452 (primarily because this is the model I have lying around). I have one question...for now:
I am going to read the current with a CT and the voltage with a voltage divider. When I look on the datasheet (specifically figure 30) I see that they indicate that the ground of the voltage divider is the same ground of the line voltage. In other words it is the neutral line. As a matter of fact, it seems to me as if the ground of the whole device (digital and analog part) is connected to neutral. Iwould like to power this project with a seperate power source (regulated with an LM7805 regulator), but does this then mean that the negative of my battery, the ground of the regulator and microcontroller, etc. should be connected to neutral?
Thanks in advance for your help