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Keithley's power supplies boast higher data confidence

Posted: 10 Oct 2012 ?? ?Print Version ?Bookmark and Share

Keywords:DC power supplies? Model 2230-30-1? Model 2220-30-1?

Keithley Instruments, Inc., has announced the addition of two multi-channel power supplies to the company's Series 2200 line of programmable

DC power supplies. The new supplies' output levels are designed to address a wide range of sourcing requirements for characterizing components, circuits, modules, and complete devices.

The Model 2230-30-1 supply provides two output channels, typically used for powering analogue circuits, with each channel capable of outputting up to 30V/1.5A/45W, plus a 6V/5A/30W output channel, typically used for powering digital circuits. These maximum output levels, combined with voltage setting and reading resolution of 1mV and current setting and reading resolution of 1mA, allow generating a wider range of output power and reading a wider range of load currents with high precision.

Both combine the advantage of greater output accuracy than offerings from the market leader at prices that are substantially lower, as well as features that enhance ease of use in circuit design, university student labs, materials research, and device testing that requires the use of more than one power source. With these new models, the company now offers a range of one-, two-, and three-channel power supplies that complement its broad source and measurement instrumentation offering.

Improved Voltage and Current Output and Readback Accuracy
With basic voltage setting accuracy and voltage read back accuracy of 0.03% for each output channel, Series 2200 multi-channel supply ensures users to apply the exact voltage they inputted at the output terminals. Rear-panel remote sense terminals on each channel of Keithley's latest offering supplies compensate for voltage drops in the power supply leads to ensure that the correct voltage is delivered to load terminals of the DUT, enhancing overall system accuracy.

Greater Testing Flexibility from Isolated, Independent Outputs
Each output channel is completely isolated, which allows the new supplies to power two isolated circuits with different reference points, eliminating the need for a second supply. Each channel can also be turned on or off independently, so the supplies can be used to power up a circuit that requires turning on multiple voltage levels in a specified time sequence. A programmable timer allows setting up a test to run unattended, turning off the outputs after a specified interval.

Protection for Delicate Devices under Test (DUTs)
Several features help protect fragile or experimental DUTs from damage during testing, including programmable voltage maximum values that prevent the accidental entry of a channel's voltage above the pre-set value. These settings are in addition to the current limit setting function, which controls the level of current that can flow into the DUT, and each output channel's limit can be set independently. In addition, all front panel controls can be locked using a user-definable password to prevent inadvertent changes during critical tests.

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