Data Sheet Low Current High Resolution DC Power Supply, 30 V, 1 A Model 1739 Features and Benefits Low 1 mA settable current limit with 0.1 mA resolution Output on/off button Exceptionally low current ripple and noise (<0.4 mArms) Excellent regulation Constant voltage (CV) and constant current (CC) operation Two large, easy-to-read LED displays provide This power supply is well suited for electrical and The B&K Precision model 1739 is a high good visibility in bright or low light conditions electronics applications requiring precise levels of resolution, low current DC power source with low current, including 4-20 mA current loop excellent load regulation and low noise CV and CC mode indicator testing, calibration, or basic IC testing. characteristics. Two 4-digit LED displays Automatic recall of saved voltage and current continuously monitor the output voltage and settings upon power-up current. The power supplies can be operated RS-232 interface locally from the front panel or remotely through Isolated output the RS-232 interface. The mechanical Overload protection configuration conserves bench space and allows for easy portability. Reverse polarity protection Power-on self test Low Current Precision Design The 1739 is a low current precision power supply designed especially for small current applications that require a clean and precise source. Using a MOSFET circuit design and high quality components with very low temperature coefficients, the power supply is extremely stable and capable of outputting current as low as 1 mA with a 100 uA settable resolution. The power supply is also implemented with a high performance AC line filter to minimize noise on the power line before rectification, allowing for very low ripple and noise at the output. Technical data subject to change www.bkprecision.com B&K Precision Corp. 2012Low Current High Resolution DC Power Supply, 30 V, 1 A Model 1739 Front Panel Specifications Model 1739 Output Ratings (0 C - 40 C) Voltage 0-30 V Voltage and Current 0-999.9 mA Bright, 4-digit current Load Regulation (% of output+offset) LED displays coarse and fine control Voltage 0.04% + 1 mV Current 0.4% + 0.1 mA Line Regulation (% of output+offset) Voltage 0.1% + 3 mV Current 0.4% + 0.3 mA Output terminals Ripple & Noise (20 Hz - 20 MHz) LED indicators for constant voltage and Voltage <1 mVrms constant current modes Current 0.4 mArms Recovery Time 75 s Rear Panel Meter Resolution Voltage 10 mV Current 0.1 mA Fanless heatsink Meter Accuracy design for quiet Voltage 0.5% + 2 digits bench operation Current 0.5% + 5 digits General RS-232 interface enables the Power Requirements 110/220 VAC 10%, 50/60 Hz instrument to be remotely Power Consumption 70 VA controlled via PC Protection Reverse polarity, current limiting Operating Environment Temperature 32 F to 104 F (0 C to 40 C) PC Connectivity Humidity 75% R.H. Control your instrument via RS-232 interface through the application Temperature coefficient (0 C - 35 C) 300 ppm/C software* or by sending programming commands. The application soft- (of output+offset) ware provides a virtual front panel and a simple data logging function to Storage Temperature 5 F to 158 F (-15 to +70 C) store and log data to a text or CSV file. Storage Humidity 85% R.H. Mechanical Specifications Weight 9 lbs (4 kg) 5.5 x 6.2 x 12.5 Dimensions (W x H x D) (140 x 158 x 318 mm) Three-Year Warranty Supplied Accessories Power cord, instruction manual, RS232 cable Note: All specifications apply to the unit after a temperature stabilization time of 30 minutes. *Available for download at www.bkprecision.com 2 v 0 4 1 1 1 7 www.bkprecision.com