samson.bunty1986
New Member
Dear all,
How to sense mains voltage(230VAC) from micro-controller?
How to sense mains voltage(230VAC) from micro-controller?
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Dear all,
How to sense mains voltage(230VAC) from micro-controller?
Hi ericgibbs,
Yes,i would like to detect whether Mains is there are not by using controller. So kindly suggest me how to do this??
Hi,
My transformer secondary is 24V..so i need to take from that using voltage divider?? is it safe??
Hi Ericgibbs,
Yes ,the 24V transformer is used in battery charging circuit,stepping down 230V to 24V. I would like to take instant voltages of secondry AC and i will operate mosfets. I will take these inputs as ADC for controller.
Hi,
That waveform will get after rectification only..Right??? But i would like to sense the voltages before rectification...can it be possible?? May be i will get negative voltages also?? can i give negative voltages to controller??
The option which you have given is good. Will this work if i connect like that??
Hi Ericgibbs,
Can you please tell me how to offset the sinewave to 2.5V. Am new to this.
My actual project is battery charger. I would like to sense the mains voltage to operate relay for mains mode and battery mode. And second purpose of sensing the mains is: In positive half cycle i need to operate one mosfet and in negative half cycle i need to operate another mosfet for charging a battery.. This charger is a single stage battery charger..