You can use an optocoupler with a high value resistor. That way it is electrically disconnected from the PIC.Hi,
I am using PIC18f4550 micocontroller. Right now I am using inbuilt ADC to check input voltage i.e. 0 to 5v.
But now as per my application I need to scan 100V to 500V DC input voltage at ADC. How can I do ?
Please suggest me.
Thanks in advance.
Good question, Mike.Another question: can the HV power supply's 0V terminal be connected to the microcontroller's GND terminal, or do you need to keep the two systems galvanically isolated?
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by Jeff Child