BIO-RAD 3000Xi

From the user manual:

Bio-Rad's computer controlled Model 3000xi Power Supply is the most powerful electrophoresis power supply avail­able. It produces constant voltage to 3,000 volts, constant current to 300 mA, and constant power to 400 watts. This fully switching, microprocessor cootrolled unit may be used with any electrophoresis instrument. The high outputs make the Model 3000xi Power Supply ideal for electrofocusing, DNA sequencing, and isotachophoresis. The supply is useful as a general purpose instrument, and is recommended for SDS-PAGE electrophoresis, two-dimensional electrophoresis, native gel electrophoresis, electrophoretic blotting, and DNA/RNA separations. The Model 3000xi Power Supply is a fully programmable and computerized instrument that incorporates several unique features. The supply offers four operating modes: standard, time, volt-hour, and step. The operator has a choice of running electrophoresis manually, for a set period of time, or for a set number of volt-hours. These parameters can be com­bined using the step mode. While operating in any one of the four modes, the user simply enters the desired power condi­tions and begins the run. The operational parameters are displayed on the LCD. Output voltage, current, and power are displayed on the LED display.