hi,
i'm building a system using a PIC micro at the moment and for part of it i need to trigger something when a part of the circuit can delivery 100mA.. this part of the circuit will normaly be limited to 10-20mA but at other points its limited to 100-150mA.. i'm really only interested when the line can deliver 100mA otherwise i'm not bothered if its limited to 10mA or whether it has no voltage on it at all..
idealy this will change the status on an I/O line.. but i could possibly use the ADC on the PIC to read in a value instead..
any ideas how i could acheive this? its very important that its reliable.
thanks
chris
i'm building a system using a PIC micro at the moment and for part of it i need to trigger something when a part of the circuit can delivery 100mA.. this part of the circuit will normaly be limited to 10-20mA but at other points its limited to 100-150mA.. i'm really only interested when the line can deliver 100mA otherwise i'm not bothered if its limited to 10mA or whether it has no voltage on it at all..
idealy this will change the status on an I/O line.. but i could possibly use the ADC on the PIC to read in a value instead..
any ideas how i could acheive this? its very important that its reliable.
thanks
chris