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Detecting Negative Voltage?

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Sajjadkhan

Sajjadkhan

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I was thinking of making my own lab power supply so thought to add negative supply also. Obviously i have to display both voltage and current. In pici can only feed positive voltages on ADC. How do i feed negative voltages? One idea is to invert that negative voltage using an inverting amplifier, right? and 2nd. i ca use an external ADC having such capability.

Can any one recommend me commonly used 12bit ADC 4-8 channel, DIP package?
 

Ok ok so you are saying to uplift that negative voltage by giving an offset to op-amp!!!! lolz why didn't it come in my mind:-D.
 

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