• Variable Output Voltage : 1 - 16 V (1900B), 1 - 32 V (1901B), 1 - 60 V (1902B)
• Variable Output Current 0 - 60 A  (1900B), 0 - 30 A  (1901B), 0 - 15 A (1900B)
• AC Input : 220 - 240 VAC 50 Hz*
  
• Automatic CV (constant voltage)/CC (constant current) crossover operation
• Up to 60 A output current
• Lightweight and compact
• Rotary encoder control for precise voltage and current setting
• Save up to 3 user-defined voltage and current presets for quick recall
• Analog remote control function
• USB interface
• Remote sensing terminal (model 1900B only)
• Overvoltage, overtemperature, and overload protection
• Flexible operating modes: Front panel (normal), Preset, or Remote Control
• Front panel 5 amp auxiliary output

• Output: 
• Variable Output Voltage : 1900B: 1 – 16 V; 1901B: 1 – 32 V; 1902B: 1 – 60 V
• Variable Output Current : 1900B: 0 – 60 A; 1900B:  0 – 30 A; 1902B: 0 – 15 A
• Auxiliary Output Current : 5 A
• Maximum Output Power : 1900B: 960 W; 1900B: 960 W; 1900B: 900 W
• Voltage Regulation:
• Load (0-100% Load) : ≤ 50 mV
• Line (90-132 VAC, 170-264 VAC Variation) : ≤ 20 mV
• Current Regulation: 
• Load (10-90% Rated Voltage) : 1900B: ≤ 200 mA' 1901B: ≤ 150 mA, 1902B: ≤ 100 mA
• Line (90-132 VAC, 170-264 VAC Variation):  ≤ 50 mA
• Ripple & Noise:
• Ripple & Noise Voltage (rms): ≤ 5 mV
• Ripple & Noise Voltage (peak-peak) : 1900B: ≤ 50 mV; 1901B:  ≤ 50 mV, 1902B: ≤ 100 mV
• Current Ripple & Noise (rms) : 1900B: ≤ 100 mA; 1901B: ≤ 50 mA (110 VAC), ≤ 40 mA (230 VAC); 1902B ≤ 15 mA
• Meter Type & Accuracy:
• Voltage Meter : 3-Digit LED Display ± 0.2% + 3 counts
• Current Meter : 3-Digit LED Display ± 0.2% + 3 counts
• Other: 
• AC Input : 100 - 120 VAC 60 Hz, 220 - 240 VAC 50 Hz*
• Full Load Input Current: 1900B: 9.4 A (110 VAC), 4.7 A (230 VAC); 1901B: 9.0 A (110 VAC), 4.5 A (230 VAC, 1902B: 9.3 A (110 VAC), 4.5 A (230 VAC
• Efficiency: 1900B: 84% (110 VAC), 85% (230 VAC); 1901B:  87% (110 VAC), 86% (230 VAC), 1902B: 87% (110 VAC), 88% (230 VAC)
• Switching Frequency: 1900B: 65 – 85 kHz; 1901B: 75 – 95 kHz; 1902B: 65 – 85 kHz
• Tracking Overvoltage Protections: 1900B: O/P 1-5 V: set voltage +2 V, O/P 5-16 V: set voltage +3 V; 1901B:  O/P 1-5 V: set voltage +2 V O/P 5-20 V: set voltage +3 V, O/P 20-32 V: set voltage +4 V, 1902B: O/P 1-5 V: set voltage +2 V, O/P 5-20 V: set voltage +3 V, O/P 20-60 V: set voltage +4 V
• Transient Response Time (50-100% Load): 1.5 ms
• Power Factor Correction : > 0.95 at optimal load
• Cooling Method : Thermostatically controlled fan from zero to full speed
• Protections : Overload, Short Circuit by Constant Current, Overvoltage, Overtemperature
• Special Features : 3 User-Defined Voltage and Current Presets, Analog Remote Control, Remote Sense (model 1900B only)
• Operating Temperature : 32 °F to 104 °F (0 °C to 40 °C), ≤80% R.H.
• Storage Temperature : 5 ºF to 158 ºF (-15 ºC to 70 ºC), ≤85% R.H.
• Dimensions (W x H x D) : 7.9” x 3.5” x 10.8” (200 x 90 x 275 mm)
• Weight : 7 lbs (3.2 kg
• Included Accessories Power cord, instruction manual, USB cable, remote control connector
• Note: All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 °C ± 5 °C.
• *Special order instructions: For 230 V version, request model 1900B-220 V, 1901B-220 V, or 1902B-220 V.

• (1) Programmable Single-Output Switching DC Power Supply
• (1) Power cord
• (1) instruction manual
• (1) USB cable
• (1) Remote control connector

Brochure/Datasheet

Instruction Manual

USB Virtual COM Drivers (Supports Windows 10/11), Ver. V11.3.0

Operating Software (Supports Windows(R) 7/8.1/10), Ver. 3.0.18

1900B Series Software Readme

Note: Prices are not binding at any time subject to change without prior notice