Hi,
I am looking at building a circuit to measure some high resistance values. The resistances I want to measure range from 200kOhms to around 10,000MOhms.
The first thing that comes to mind is a voltage divider. I am thinking about having a few different resistors to measure the different voltages at the divider. Then rearranging the voltage divider equation for the high resistance I could find its value.
As I am intending to use as low voltage as possible (maybe 5V?), at the high resistance values, will I be able to measure any voltage? I could possibly step up the voltage, however I have limited space for this circuit.
I haven't tested this practically yet, just running through some ideas. Is there any other possible circuits anyone knows of to measure resistances on the order of 10,000 MOhms?
Cheers,
Sean
I am looking at building a circuit to measure some high resistance values. The resistances I want to measure range from 200kOhms to around 10,000MOhms.
The first thing that comes to mind is a voltage divider. I am thinking about having a few different resistors to measure the different voltages at the divider. Then rearranging the voltage divider equation for the high resistance I could find its value.
As I am intending to use as low voltage as possible (maybe 5V?), at the high resistance values, will I be able to measure any voltage? I could possibly step up the voltage, however I have limited space for this circuit.
I haven't tested this practically yet, just running through some ideas. Is there any other possible circuits anyone knows of to measure resistances on the order of 10,000 MOhms?
Cheers,
Sean