B&K Precision 1740B Single Output DC Power Supply, Dual Analog, 0-60 V Output Voltage, 0-4 A Output CurrentLargest selection of voltage and current ratings ever offered Connect two supplies in parallel to double the current output Connect two supplies in series to double the voltage output Reliable, Durable Operate continuously at full load without overheating BK Precision models have all of the great features you would expect BK Precision power supplies to have and some new features not normally seen on power supplies in this price range. The output