| Electronics > Projects, Designs, and Technical Stuff |
| Current measurement from 0.1uA to 1A |
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| Marco:
Nice, so it exists already. Looking at their schematic I guess a bidirectional switch isn't really necessary since the shunt voltage is too low for the body diodes to carry significant current ... should have thought of that. |
| beanflying:
And almost like he is a mind reader Andreas Spiess does a review on both (for low currents) Not a great photo Mr Jones ;) https://youtu.be/HmXfyLyN38c |
| David Hess:
--- Quote from: Nauris on December 05, 2018, 08:42:24 pm ---What about 1N4007 or some such in place of the sense resistor? Should easily give the required dynamic range, though the response is more logarithmic than linear. --- End quote --- The logarithmic response is actually an advantage for wide dynamic range but at high currents, the diode's series resistance and temperature compensation become large error terms. This circuit type would be more suitable for current measurements between nanoamps and milliamps. |
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