NEW BK PRECISION 1901B

The BK Precision 1901B is a laboratory-grade switching mode DC power supply featuring a variable output of 1–32 VDC at up to 30 A continuous, with a maximum output power of 960 W. It offers automatic CV/CC (Constant Voltage/Constant Current) crossover operation, dual-action coarse/fine rotary encoder controls, a front-panel 5 A auxiliary output, and both USB and analog remote control interfaces. Connectors include binding posts for the main and auxiliary outputs, a USB Type-B port, and a DB9 remote control terminal. Protections include overvoltage, overtemperature, overload, and short-circuit (constant current) safeguards, making it suitable for demanding bench and laboratory applications.
Specification
Value
Brand
BK Precision
Model / Part Number
1901B
Series
1900B
Product Type
Switching DC Power Supply (Bench Top)
AC Input Voltage
100–120 VAC, 60 Hz (110VAC version)
Full Load Input Current
9.0 A (110 VAC) / 4.5 A (230 VAC)
Variable Output Voltage
1 – 32 VDC
Variable Output Current
0 – 30 A
Auxiliary Output Current
5 A (front panel)
Maximum Output Power
960 W
Number of Outputs
1
Voltage Regulation (Line)
≤ 20 mV
Voltage Regulation (Load, 0–100%)
≤ 50 mV
Current Regulation (Line)
≤ 50 mA
Current Regulation (Load)
≤ 150 mA
Ripple & Noise Voltage (rms)
≤ 5 mV rms
Switching Frequency
75 – 95 kHz
Efficiency
87% (120 VAC)
Power Factor Correction
> 0.95 at optimal load
Display Type
3-Digit LED (Voltage & Current)
Meter Accuracy
±0.2% + 3 counts
Control Interface
USB, Analog Remote Control
Control Modes
Front Panel, Analog Remote, USB Remote, Preset Recall
User Presets
3 User-Defined Voltage & Current Presets
Control Knob
Dual-Action Coarse/Fine Rotary Encoder
CV/CC Operation
Automatic CV/CC Crossover
Protections
Overvoltage, Overtemperature, Overload, Short Circuit (CC mode)
Cooling Method
Thermostatically controlled fan (zero to full speed)
Operating Temperature
0°C to 40°C (32°F to 104°F), ≤ 80% RH
Dimensions (W × H × D)
7.9" × 3.5" × 10.8" (200 × 90 × 275 mm)
Weight
7 lbs (3.2 kg)
Included Accessories
Power Cord, Instruction Manual, Remote Control Connector
We warranty all items for 30 days from date of purchase.