Battery simulator makes lower-power portables possible
Instrument tests complex power schemes quickly to keep costs down
Providing fast test times to keep test costs to a minimum for mobile devices, the Model 2308 portable device battery/charger simulator employs a measurement engine that enables more accurate characterization of both full-power operation and low-current sleep modes to maximize battery-life performance. This capability makes it possible for designers to implement complex transmission schemes that meet stringent power specs.
The instrument, which has two power channels, a DVM, and digital ports for relay control, recovers in less than 35 µs even when load currents change by a factor of 10 or more, as when switching from sleep to full operating mode. It will maintain a stable output voltage with a transient voltage drop of under 90 mV, and can also change range and make a power line cycle measurement in 27 ms. Four current ranges spanning 5 A to 5 mA with resolutions from 100 µA to 0.1 µA let users monitor small changes in load current as narrow as 50 µs,
The instrument’s output resistance can be programmed by users to change while voltage is being sourced to simulate the increase in a battery’s internal resistance as it discharges. An analog output lets users analyze details of start-up and operating modes to determine total device power consumption. ($2,795 available 3 weeks ARO.)
Keithley Instruments , Cleveland , OH
Information 800-688-9951
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