The Kepco BOP Series is a family of bipolar operational power supply / amplifiers offered in 100 W, 200 W, and 400 W chassis configurations, with voltage ranges from ±20 V to ±200 V and current ranges from ±1 A to ±20 A. While each BOP is a fully rated DC power supply, it is also a high-powered operational amplifier with full four-quadrant bipolar operation — its output is capable of both sustained DC and the replication of arbitrary AC waveforms.

Kepco describes the BOP as suited to providing dynamically agile voltage for test and simulation. In Kepco's BOP, the voltage and current outputs can be controlled smoothly and linearly through the entire rated plus and minus ranges, passing smoothly through zero with no polarity switching. Because BOP units are high-speed power operational amplifiers rather than general-purpose power supplies, Kepco notes that the load characteristics should be mainly resistive to realize the full high-speed potential; capacitive loads above 0.1 microfarad require the BOP to be slowed via feedback capacitance to avoid oscillation, and special user-port terminals are provided to slow the BOP for optimum current-mode stability into inductive loading.

ValueTronics International stocks new and pre-owned Kepco BOP Series bipolar operational power supplies. Each unit moves through our 20,000-square-foot secure warehouse at 1675 Cambridge Drive, Elgin, Illinois, where it is logged, inspected, and prepared in-house before shipment — not drop-shipped from a third-party broker. Buyers working on four-quadrant test setups, magnetics drive, or arbitrary-waveform power applications can verify configuration details with our Test Architect team before purchase.

Brand Heritage

Kepco, Inc. has manufactured power supplies and power-conversion equipment continuously since 1946 from its Flushing, New York facility, and is certified to ISO 9001. The BOP product line has remained under Kepco branding throughout its history — there has been no corporate acquisition or rebrand of the Kepco T&M power-conversion business.

Compare Other Models in This Series

The Kepco BOP Series spans 100 W, 200 W, and 400 W chassis configurations across fourteen standard models. Within each power tier, models differ in voltage range (±20 V through ±200 V) and corresponding current range (±1 A through ±20 A), with voltage × current always matching the nominal power rating. Closed-loop voltage and current gains, output impedance characteristics, and dynamic response specifications vary across the family per the model table in the datasheet.

Two front-panel display options are offered family-wide: the M suffix denotes analog zero-center meters, while the D suffix denotes digital displays. Mechanical packaging is shared within each power tier — 100 W and 200 W models use a three-quarter-rack chassis, while 400 W models and the ±200 V / ±1 A BOP 200-1M use a full-rack chassis.

Each BOP model below is listed as its own dedicated product page with pre-owned-matched pricing and configuration detail. Select the model that matches your application's voltage range, current range, and power tier; suffix selection (M for analog meters, D for digital displays) and optional factory-installed digital interface cards are noted per the datasheet's suffix designations.

Differences across the family follow the model table directly. At the 100 W tier, the BOP 20-5M provides ±20 V at ±5 A; the BOP 50-2M provides ±50 V at ±2 A; the BOP 100-1M provides ±100 V at ±1 A. At the 200 W tier, six models cover ±20 V/±10 A through ±200 V/±1 A. At the 400 W tier, five models cover ±20 V/±20 A through ±100 V/±4 A.

Beyond voltage and current range, the per-model differences in the comparison table include closed-loop voltage gain (2.0 to 20.0 V/V), closed-loop current gain (0.1 to 2.0 A/V), voltage-mode series R and series L, current-mode shunt R and shunt C, and the dynamic specs (bandwidth, rise/fall time, large-signal frequency response, slewing rate, and step-load recovery in both voltage and current modes). The BOP 200-1M is noted as occupying the same chassis size as the 400 W models despite its 200 W rating, and Kepco notes its 200 V model uses FET output devices where the other models use transistors.

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

Product Core & Specifications

BOP Static Specifications

About this used unit

• Warranty included.
• Functional verification included.
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

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.