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The BK Precision 9129B is a triple-output linear programmable DC power supply with three independent, electrically isolated outputs. CH1 and CH2 each deliver 0–30V at up to 3A, while CH3 provides 0–5V at up to 3A, for a combined output capability of 195 watts. A vacuum fluorescent display shows voltage and current settings for all three channels simultaneously, and a numeric keypad and rotary knob with cursor keys allow direct entry or fine adjustment of set values.
The 9129B is positioned by the manufacturer for education, service, and electronic design applications. The combination of three isolated outputs and series, parallel, and tracking combined modes lets a single instrument serve workflows that would otherwise require multiple supplies: powering positive and negative rails for bipolar analog circuits, combining channels to reach higher voltage or current, or maintaining a fixed ratio between rails during coordinated adjustment.
ValueTronics stocks, tests, and ships the 9129B from our 20,000 sq ft secure warehouse at 1675 Cambridge Drive, Elgin, Illinois. We operate as a buying-and-selling test equipment specialist rather than a drop-shipper, which means every unit that leaves our facility has been physically handled and verified against the manufacturer's published specifications by our in-house technical team.
| Specification | 9129B |
|---|---|
| Output Rating | |
| Voltage | 0–30 V (CH1 & CH2), 0-5 V (CH3) |
| Current | 0-3 A (all channels) |
| Power | 195 W |
| Load Regulation | |
| Voltage | ≤ 0.02 % + 4 mV |
| Current | ≤ 0.2 % + 3 mA |
| Line Regulation | |
| Voltage | ≤ 0.02 % + 4 mV |
| Current | ≤ 0.2 % + 3 mA |
| Ripple & Noise | |
| Voltage | ≤ 5 mVp-p / ≤ 1 mVrms |
| Current | ≤ 6 mArms |
| Programming Resolution | |
| Voltage | 10 mV |
| Current | 1 mA |
| Readback Resolution | |
| Voltage | 10 mV |
| Current | 1 mA |
| Programming Accuracy ± (% output + offset) | |
| Voltage | ≤ 0.06 % + 20 mV |
| Current | ≤ 0.2 % + 10 mA |
| Readback Accuracy ± (% output + offset) | |
| Voltage | ≤ 0.06 % + 20 mV |
| Current | ≤ 0.2 % + 10 mA |
| Series Accuracy (combined mode) | |
| Voltage | ≤ 0.5 % + 30 mV |
| Current | ≤ 0.2 % + 15 mA |
| Parallel Accuracy (combined mode) | |
| Voltage | ≤ 0.2 % + 30 mV |
| Current | ≤ 0.2 % + 25 mA |
| General | |
| Memory | 3 memory groups with 9 locations in each group |
| Remote Interface | USB (Virtual COM via included USB to TTL serial adapter) |
| AC Input | 110/220 VAC (+/- 10 %), 47 Hz - 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) |
| Weight | 16.05 lbs. (7.3 kg) |
| Warranty | Three-Year Warranty |
| Standard Accessories | Power cord, IT-E132B (USB to TTL serial adapter plus USB cable), test report, and certificate of calibration |
| Optional Accessories | IT-E151 rack mount kit |
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.
Model No
B&K
Condition
New
Manufacturer
B&K Precision
Current
3 A
Voltage
30 V
Power
195 W
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
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