Many of us have seen, some of us have bought the 5 digit 1 volt meter currently available from China at a reasonable price. I have one.
If I add a 1 ohm shunt I have a 1 amp ammeter. Can I add a 100k ohm resistor and get a 10 microamp meter? Or will the internal resistance of the meter load it? If it does, is the internal resistance stable so I can use a higher resistance and trim it to order?
This seems like an incredibly low current to me and I find it hard to believe that such a meter would be stable and accurate. But if it is it could be used for an inexpensive very high range ohmmeter--many meg-ohms.
Is it worth my time to try it? Thanks.
If I add a 1 ohm shunt I have a 1 amp ammeter. Can I add a 100k ohm resistor and get a 10 microamp meter? Or will the internal resistance of the meter load it? If it does, is the internal resistance stable so I can use a higher resistance and trim it to order?
This seems like an incredibly low current to me and I find it hard to believe that such a meter would be stable and accurate. But if it is it could be used for an inexpensive very high range ohmmeter--many meg-ohms.
Is it worth my time to try it? Thanks.