Tagged Questions

1
vote
2answers
208 views

How can I do A/D conversion with isolation?

I have to sense a voltage range of 0-25V dc and send to the ATMEGA 32 microcontroller. I want to use a voltage divider for sensing the voltage. But the problem is isolation is required between the ...
6
votes
4answers
571 views

Sensing DC motor current

I am allowing the current through a DC motor to flow through a small resistor and measuring the voltage across it. I need to give this analog Voltage to an ADC of micro-controller to do some signal ...
4
votes
1answer
484 views

Best way to measure 230VAC

I'm trying to design a circuit to measure power of 230VAC (MAINS), with the ADC of a small MCU. I have designed the part of the circuit to measure current, but my solution to measure voltage is ...