# B&K Precision 9131C Programmable Triple Output DC Power Supply, 30V/6A + 30V/6A + 5V/3A, 375W # B&K Precision 9131C Programmable Triple Output DC Power Supply, 30V/6A + 30V/6A + 5V/3A, 375W ## Key Features At A Glance - Three independent and electrically isolated outputs, configurable in series, parallel, or tracking modes - Low-noise linear regulation with ≤1 mVrms voltage ripple for sensitive analog and precision bench work - High programming and readback resolution of 1 mV and 1 mA across all channels - Simultaneous voltage and current display for all three channels on a vacuum fluorescent display - Standard USB (USBTMC) and RS232 interfaces with SCPI command support for automated test integration - Store and recall up to 36 instrument settings across four memory groups - Timer-controlled output adjustable from 0.1 to 99999.9 seconds with remote sense capability - Overvoltage (OVP) and overtemperature (OTP) protection with keylock function and 3-year warranty The B&K Precision 9130C Series is a family of triple-output linear programmable DC power supplies designed for bench and automated test applications. The series comprises three models — the 9130C, 9131C, and 9132C — each providing three independent, electrically isolated outputs that can be operated separately or combined to deliver higher voltage or current. Each model includes two main channels plus a dedicated 0–5 V auxiliary channel, with output configurations differentiated across the family by voltage range, current capacity, and total output power. These supplies are positioned by B&K Precision for production testing, telecommunications, R&D, electronic service, and general laboratory work. The combination of three isolated outputs, low-noise linear regulation, and programmable control via SCPI commands makes the 9130C Series suitable for powering multi-rail circuits, characterizing devices that require both positive and negative supplies, and supporting automated test sequences. The compact 19-inch half-rack form factor allows two units to be mounted side-by-side, which is useful in space-constrained production test racks and bench environments. ValueTronics International, LLC stocks, tests, and supports the full B&K Precision 9130C Series from its 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every {{CONDITION}} unit shipped from this facility is processed by ValueTronics technicians and prepared for delivery from in-house inventory rather than drop-shipped from a third-party warehouse. The Elgin facility consolidates inventory, testing, and order fulfillment under one roof — which means a customer placing an order is working with the same organization that physically holds and prepares the instrument. ## Brand Heritage B&K Precision Corporation has operated under its current name since the 1950s and remains an independent test and measurement instrument manufacturer headquartered in Yorba Linda, California. The company's European operations are conducted through its French subsidiary Sefram, and its Asian presence operates through B+K Precision Taiwan. B&K Precision has not been absorbed into a larger corporate group and maintains continuity of brand and product support across its instrument lines. ## Compare Other Models in This Series The 9130C Series consists of three triple-output programmable DC power supplies that share a common architecture, common control interfaces, and a common feature set, but differ in the voltage and current capabilities of the two main output channels. All three models provide the same auxiliary 0–5 V, 3 A channel 3, the same 1 mV / 1 mA programming and readback resolution, the same USB and RS232 interfaces with SCPI command support, and the same protection, memory, timer, and tracking-mode features. Where the models diverge is in main-channel output rating and total output power. The 9130C provides 0–30 V at 0–3 A on channels 1 and 2 with 195 W total output. The 9131C raises the current capability of channels 1 and 2 to 0–6 A while keeping the 0–30 V range, delivering 375 W total. The 9132C raises the voltage capability of channels 1 and 2 to 0–60 V while keeping the 0–3 A current rating, also at 375 W total. Each new 9130C Series model below is listed on its own product page with condition-matched pricing. The model selection should be driven by the voltage and current requirement of the device under test, not by the relative pricing between models — choosing a higher-rated model than the application requires does not improve measurement quality, while choosing a lower-rated model can lead to current limiting or voltage headroom problems on the bench. The comparison table that follows breaks down the three models across the specifications that vary across the family: main-channel voltage range, main-channel current range, and total output power. The auxiliary channel 3, the regulation and noise specifications, the resolution and accuracy specifications, and the interface and protection features are identical across all three models and are not repeated in the comparison. Common selection patterns: for general bench work on circuits running below 30 V with moderate current draw, the 9130C is the most economical fit. For battery test, motor drive, or higher-current digital systems requiring main-channel current above 3 A, the 9131C provides 6 A per main channel at the same 30 V range. For applications with devices running between 30 V and 60 V — including some industrial controls, telecom equipment, and higher-voltage analog circuits — the 9132C extends the voltage range while keeping the 3 A current rating on the main channels. Model Ch1/Ch2 Voltage Ch1/Ch2 Current Ch3 Output **9131C** 0 to 30 V 0 to 6 A 0 to 5 V, 0 to 3 A 9130C 0 to 30 V 0 to 3 A 0 to 5 V, 0 to 3 A 9132C 0 to 60 V 0 to 3 A 0 to 5 V, 0 to 3 A Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - Power cord - Instruction manual - Certificate of calibration ## Product Core & Specifications Specification 9130C 9131C 9132C Output Rating Voltage 0 to 30 V (Ch1 & Ch2), 0 to 5 V (Ch3) 0 to 30 V (Ch1 & Ch2), 0 to 5 V (Ch3) 0 to 60 V (Ch1 & Ch2), 0 to 5 V (Ch3) Current 0 to 3 A (Ch1, Ch2), 0 to 3 A (Ch3) 0 to 6 A (Ch1, Ch2), 0 to 3 A (Ch3) 0 to 3 A (Ch1, Ch2), 0 to 3 A (Ch3) Power 195 W 375 W 375 W Load Regulation Voltage ≤ 0.01% + 3 mV Current ≤ 0.1% + 3 mA Line Regulation Voltage ≤ 0.01% + 3 mV Current ≤ 0.1% + 3 mA Ripple and Noise Voltage ≤ 1 mVrms Current ≤ 3 mArms ≤ 5 mArms (Ch1 & Ch2), ≤ 4 mArms (Ch3) ≤ 4 mArms Programming Resolution Voltage 1 mV Current 1 mA Readback Resolution Voltage 1 mV Current 1 mA Programming Accuracy ± (% output + offset) Voltage ≤ 0.03% + 10 mV Current ≤ 0.1% + 5 mA ≤ 0.1% + 8 mA (Ch1 & Ch2), ≤ 0.1% + 5 mA (Ch3) ≤ 0.1% + 5 mA Readback Accuracy ± (% output + offset) Voltage ≤ 0.03% + 10 mV Current ≤ 0.1% + 5 mA ≤ 0.1% + 8 mA (Ch1 & Ch2), ≤ 0.1% + 5 mA (Ch3) ≤ 0.1% + 5 mA Series Accuracy (combined mode) Current ≤ 0.05% + 10 mA Parallel Accuracy (combined mode) Voltage ≤ 0.02% + 5 mV Current ≤ 0.1% + 20 mA Temperature Coefficient (0 °C to 40 °C) ± (% output + offset) (typical) Voltage ≤ 0.03% + 10 mV Current ≤ 0.1% + 5 mA Transient Response Time Ch1, Ch2 ≤ 180 µs ≤ 120 µs ≤ 90 µs Ch3 ≤ 160 µs ≤ 200 µs ≤ 80 µs Rising Time at Full Load / No Load Ch1, Ch2 ≤ 100 ms ≤ 100 ms ≤ 100 ms Ch3 ≤ 20 ms ≤ 100 ms ≤ 100 ms Falling Time at Full Load Ch1, Ch2 ≤ 2.4 ms ≤ 1.5 ms ≤ 5 ms Ch3 ≤ 1 ms ≤ 1.5 ms ≤ 4.5 ms Falling Time at No Load Ch1, Ch2 ≤ 4 s ≤ 1 s ≤ 5 s Ch3 ≤ 300 ms ≤ 1 s ≤ 150 ms General Memory 4 memory groups with 9 locations in each group Timer 0.1 to 99999.9 seconds Remote Interface USB (USBTMC-compliant) and RS232 AC Input 110/220 VAC (±10 %), 47 Hz to 63 Hz Operating Temperature 32 °F to 104 °F (0 °C to 40 °C), relative humidity up to 80% Storage Temperature \-4 °F to 158 °F (-20 °C to 70 °C) Dimensions (W x H x D) 8.45" x 3.47" x 13.96" (214.5 x 88.2 x 354.6 mm) 8.45" x 3.47" x 17.52" (214.5 x 88.2 x 445 mm) Warranty 3 Years Standard Accessories Power cord, instruction manual, and certificate of calibration Optional Accessories IT-E151 rack mount kit **Important:** Channel 3 is rated 0 to 5 V on all three models in the series; only the main channels (1 and 2) differ across 9130C, 9131C, and 9132C. Confirm the required main-channel voltage and current ranges against the application before selecting a model.**Important:** All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 °C ± 5 °C.**Important:** Transient Response Time spec: following a change in output current from 10% to 100% load with output recovery to within 15 mV. **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.** ## Details - **Price:** 1960.0 USD - **Vendor:** B&K Precision - **Type:** Dc Supply - **Tags:** BK Precision, DC Power Supply, Manufacturers, Power Supplies & Loads, product_manual_group_3, Product_new ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1960.00 USD | In stock | ## Images - 9131C BK Precision DC Power Supply --- > Source: [ValueTronics](https://valuetronics.com/products/9131c-b-k-precision-dc-power-supply-new) > Updated: 2026-05-30