Hi,
I am pretty new at this but have been given a task to come up with a design for a constant current source that can be reversed probably, I would guess, through an analog switch. The current source would be running a pump for an oxygen sensor which alternately fills and empties a measurement chamber, with the length of time of one cycle being related to oxygen concentration around the sensor. I have been looking around the internet but have been unable to find anything that might give me some guidance (at least that I can understand!) on how to reverse the current to the pump.
Any help would be greatly appreciated!
dtak
I am pretty new at this but have been given a task to come up with a design for a constant current source that can be reversed probably, I would guess, through an analog switch. The current source would be running a pump for an oxygen sensor which alternately fills and empties a measurement chamber, with the length of time of one cycle being related to oxygen concentration around the sensor. I have been looking around the internet but have been unable to find anything that might give me some guidance (at least that I can understand!) on how to reverse the current to the pump.
Any help would be greatly appreciated!
dtak