µCurrent™ GOLD. Precision op-amp circuit designed specifically for measuring ultra-low currents. Design by David Jones from EEVblog. Ucurrent Gold will be used to help us to measure current for our Ultra Low Current Flasher project. Here is pre-test result for Ucurrent with our circuit..Guest what dang!!!! 15.2uA on sleep mode..our goal is to get <10uA on sleep mode.
The µCurrent™ GOLD is the latest design with greatly improved specs over the original. Improvements have been made in basic accuracy, bandwidth (now you can measure fast changing “sleep” modes), current handling, and an added shorting mode to ensure uninterrupted power to your device under test while changing ranges. The µCurrent can rival 5 1/2 digit multimeters in accuracy, it is truly a precision instrument.
The µCurrent™ GOLD is the latest design with greatly improved specs over the original. Improvements have been made in basic accuracy, bandwidth (now you can measure fast changing “sleep” modes), current handling, and an added shorting mode to ensure uninterrupted power to your device under test while changing ranges. The µCurrent can rival 5 1/2 digit multimeters in accuracy, it is truly a precision instrument.
milivolt reading on voltmeter represent current reading in micro Ampere. Awesome!!
For increased battery life and greater potential output voltage swing, 3 x AAA batteries in series can be used instead of the coin cell. No modifications are required, just wire in parallel with the existing coin cell holder. A 3 x AAA holder fits in the existing box.
View the SCHEMATIC
View the BOM
Download the original Gerber, Altium PCB and Schematic files HERE.
NOTE: The old model is now discontinued.
BUY ONE in the EEVblog Shop
In Europe you can buy one HERE
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