In FULL mode the HiCap™ bench top tester determines capacitance by measuring the charge or discharge time between the IEC-recommended voltage points of 20 percent and 80 percent of working voltage.
After a charging measurement completes the HiCap™ bench top tester continues to charge the device under test to the working voltage by providing short constant current pulses as needed to reach and maintain the working voltage.
During this interval the unit measures ESR by recording the instantaneous voltage recovery step after a short, constant current discharge pulse.
The user initiates the ESR measurement. The user can also initiate a discharge capacitance measurement cycle at any time after a charging measurement cycle and does not need to wait for full charging to the working voltage.
In FAST mode the unit makes a capacitance measurement by charging or discharging the device over a voltage range of ten percent of the FULL mode range. Charging or discharging is automatically decided by the tester depending upon the initial state of charge of the device. ESR is automatically measured and reported.
The HiCap™ supercapacitor tester is the first product of its kind that integrates everything needed into a single, easy-to-use, bench top unit that measures these important, fundamental parameters of supercapacitors. It is a suitable and cost-effective addition to research, engineering, and production environments.
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