Hey all..
I am working on a Digital AC voltmeter.
There are two parts in circuit one with microcontroller and having a constant 5V and 0V as VDD and VSS Power supply.
The other part contains resistors and diodes which inputs AC voltage....
The Question is how can I connect the whole circuit to one reference point ?
what happens if I connect the AC main's neutral with Power supply -ve terminal ?
What should be done to achieve the common reference..?
I am working on a Digital AC voltmeter.
There are two parts in circuit one with microcontroller and having a constant 5V and 0V as VDD and VSS Power supply.
The other part contains resistors and diodes which inputs AC voltage....
The Question is how can I connect the whole circuit to one reference point ?
what happens if I connect the AC main's neutral with Power supply -ve terminal ?
What should be done to achieve the common reference..?