Linear DC Power Supply offers 3 programmable outputs.

Press Release Summary:

Able to be operated in CV and CC modes, 9129B has 19 in. half-rack form factor and features 3 isolated outputs that can be adjusted independently or combined in series or parallel to output higher voltage or current. Two channels offer variable voltage and current up to 30 V/3 A, while third variable channel is rated for 5 V/3 A. Along with programming and readback resolution of 10 mV/1 mA, features include bright VFD, tracking mode, USB-to-TTL interface, and internal settings memory.

Original Press Release:

B&K Precision Sets New Standard in Economy Programmable Triple-Output DC Power Supplies

Features Isolated Outputs with Series, Parallel, and Tracking Modes

YORBA LINDA, CA – B&K Precision today introduced its latest programmable triple output DC power supply, the 9129B, to complement its value-priced programmable multi-channel power supply lines. The new linear power supply features three isolated outputs that can be adjusted independently or combined in series or parallel to output higher voltage or current. The 9129B provides two channels with variable voltage and current up to 30 V/3 A and a third variable channel rated for 5 V/3 A. With a compact 19" half-rack form factor and fully programmable outputs, the 9129B is offered at an economical price point for use in a variety of general purpose applications.

Featuring a programming and readback resolution of 10 mV/1 mA, the 9129B provides convenient cursor keys and a rotary control knob for precise voltage and current settings. The power supply can be operated in constant voltage (CV) and constant current (CC) modes. Each channel output is simultaneously displayed on a bright vacuum fluorescent display (VFD).

Flexible series and parallel combination modes on the 9129B allow users to conveniently meter channels 1 and 2 connected in series or parallel. Tracking mode is also available for maintaining a user-defined ratio between the outputs, which allows for easy simultaneous adjustments.

Provided on the rear is a USB-to-TTL interface supporting SCPI commands for remote programming. A USB-to-TTL serial adapter and USB cable is included with the instrument. Users can also control their instrument, generate test sequences, and log measurement data via the provided PC software application or NI-certified LabVIEW driver.

Other features include built-in overvoltage protection (OVP), overtemperature protection (OTP), keylock function, and internal memory to store and recall up to 27 different instrument settings.

Available immediately, B&K Precision's 9129B is backed by a standard 3-year warranty and listed at a price of $695.

For additional technical specifications, accessories, and support documents, visit the product page here (

About B&K Precision

For more than 60 years, B&K Precision Corporation has been building a reputation for excellence in the design and manufacture of reliable and cost-effective test and measurement instruments. The company's products are used in a wide range of applications including design, research and development, production line testing, industrial maintenance, and electronic field service. B&K Precision test and measurement instruments are standard equipment in a large number of universities and technical schools which train future engineers and technicians. B&K Precision was founded in 1951 and is headquartered in Yorba Linda, California.

More from Communication Systems & Equipment

All Topics