Hello Everyone,
In continuation with this thread:
http://forum.allaboutcircuits.com/threads/suitable-opamp-for-very-low-signal-amplifications.102442/
I am next exploring the possible efficient ways to detect grid voltage using a micro-controller(dsPIC33):
1.I use a step down transformer ,then give it to a rectifier ,filter the signal, and then give it to micro-controller as a digital input.
Using a transformer gives me isolation from line side and user(MCU) side.
OR
2.I simply use a voltage divider and give it to as ADC input of my MCU.
Not using a transformer saves a lot of cost and makes the circuit lighter and portable,but i sacrifice isolation.
If you have any other suggestions,I'd be glad to hear them.
Arun
In continuation with this thread:
http://forum.allaboutcircuits.com/threads/suitable-opamp-for-very-low-signal-amplifications.102442/
I am next exploring the possible efficient ways to detect grid voltage using a micro-controller(dsPIC33):
1.I use a step down transformer ,then give it to a rectifier ,filter the signal, and then give it to micro-controller as a digital input.
Using a transformer gives me isolation from line side and user(MCU) side.
OR
2.I simply use a voltage divider and give it to as ADC input of my MCU.
Not using a transformer saves a lot of cost and makes the circuit lighter and portable,but i sacrifice isolation.
If you have any other suggestions,I'd be glad to hear them.
Arun