Tektronix has launched the Keithley 2281S battery simulator and precision DC power supply. Unlike existing sources and power supplies that can only simulate a battery under one specific condition, the new Keithley battery simulator offers emulation of battery performance from full charge to total discharge using a battery model that includes state of charge, amp-hour capacity, equivalent series resistance and open circuit voltage.
Battery models that are simulated or played back by the 2281S can be obtained in a number of ways. One method is to use the instrument’s battery test function to perform a full test on a battery. After the test, a battery model can be generated based on the measurement results of the battery charging process. Battery models can be edited, created, imported, or exported in a convenient CSV file format. Alternatively, a battery model can be created according to a battery’s chemistry and the manufacturer’s specifications.
The 2281S incorporates a bright 11 cm TFT display that shows voltage, current, amp-hour readings and source settings in large, easy-to-read characters. An icon-based main menu provides fast access to source setup, measurement setup, display formats, trigger options and system settings.
Adding to its value on the bench, the 2281S also functions as a high performance power supply with a maximum output of 20 V and 6 A. It delivers class-leading measurement accuracies of 0,02% for voltage and 0,05% for current. Resolution of current measurements is as low as 10 nA, allowing measurement of very low sleep mode currents.
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