The Keithley Series 2290 High Voltage Power Supplies are designed for high voltage device and material testing as well as high energy physics experimentation. The series consists of two models: the Model 2290-5, which provides voltage outputs up to 5000 V with a 5 mA current capacity, and the Model 2290-10, which provides voltage outputs up to 10,000 V with a 1 mA current capacity. Both supplies measure output voltage with 1 V resolution and output current with 1 µA resolution. In addition to dedicated voltage and current output displays, a third display shows one of four settings: output voltage, voltage limit, current limit, or current trip, set precisely via the front panel keypad.

Typical applications for the Series 2290 include high voltage device breakdown testing, high voltage component testing, insulation testing, high voltage resistivity measurements, and high energy physics research. The supplies facilitate accurate measurements when paired with sensitive measurement instrumentation, supporting test scenarios where leakage current or high resistivity behavior must be characterized at picoamp levels.

ValueTronics International is headquartered at 1675 Cambridge Drive in Elgin, Illinois, where we operate a 20,000 sq ft secure warehouse for inventory, inspection, and performance verification of every instrument we ship. Unlike drop-ship resellers or pass-through brokers, we physically handle and verify each unit on-site before delivery, which is particularly important for high-voltage instrumentation where condition documentation, calibration status, and accessory completeness directly affect both safety and measurement validity.

Brand Heritage

Keithley Instruments was founded in 1946 in Cleveland, Ohio, and built its reputation around precision low-level electrical measurement instrumentation. Keithley was acquired by Danaher Corporation in 2010 and, following the 2016 spinoff of Danaher's industrial businesses, now operates as a Tektronix company within Fortive Corporation. Instruments such as the Series 2290 carry the Keithley brand and continue to be supported through that corporate lineage.

Compare Other Models in This Series

The Series 2290 family from Keithley consists of two high voltage DC power supplies that share a common architecture, front-panel interface, IEEE-488 programmability, and safety interlock design, but differ in their maximum output voltage and current capacity. The Model 2290-5 covers applications up to 5 kV with up to 5 mA of output current, while the Model 2290-10 extends voltage range to 10 kV with 1 mA of output current.

Both models target the same broad application set — high voltage device breakdown, component testing, insulation testing, resistivity measurements, and high energy physics research — but the choice between them is driven by the specific voltage and current envelope the device under test requires, as well as ripple and filtering needs.

Each model below is its own dedicated product page with condition-matched pricing for new inventory. The 2290-5 is additionally available in regional input-voltage variants (2290-5 for 120 VAC, 2290E-5 for 240 VAC, 2290J-5 for 100 VAC), each listed separately.

The 2290-5 differentiates itself within the family through its selectable internal filters: with Filter 1, output ripple is reduced to roughly 1 mVRMS at 1 kV (maximum output reduced to 3000 V); with Filter 2, ripple stays under 3 mVRMS up to 5000 V (maximum output current reduced to 3 mA). The 2290-10 trades filter selectability for extended voltage range, with a single output mode delivering up to 10,000 V DC at up to 1 mA with output ripple under 1 VRMS (specified 0.01% of full scale, 300 Hz to 300 kHz).

Headline differences between the two models center on the voltage and current envelope and the resulting ripple performance. The 2290-5 offers up to 5000 V at 5 mA with a typical maximum ripple of 100 mVRMS unfiltered (reducible to under 3 mVRMS with the filter options), while the 2290-10 reaches up to 10,000 V at 1 mA with ripple specified as 0.01% of full scale RMS. The 2290-5 voltage set accuracy is ±(0.01% of setting + 2.5 V); the 2290-10 voltage set accuracy is ±0.06% of full scale.

Mechanical and interface differences include connector type — the 2290-5 uses a 5 kV SHV male output (Kings type 1704-1), while the 2290-10 uses a 10 kV SHV male output (Kings type 1764-1) — and the 2290-10 adds an RS-232 interface alongside the IEEE-488 interface that both models share. The 2290-5 weighs 5.5 kg, the 2290-10 weighs 3.7 kg, and both share the same 89 mm × 206 mm × 406 mm form factor. The comparison table that follows summarizes these specifications side-by-side.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Product Core & Specifications

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.