Instek GPD-4303S 200W Quadruple-Output Programmable Linear DC Power Supply, 30V DC, 3 Amp, 1mV, 1-milliamp ResolutionLinear power supply unit provides a constant source of DC voltage and current for powering and testing electronic devices Two outputs supply adjustable voltage up to 30VDC and current up to 3 amp Third output supplies adjustable voltage from 0 to 5V or 5 to 10VDC and current from 0 to 3 or 0 to 1 amp, and fourth output supplies adjustable voltage from 0 to 5VDC and current from 0 to 1 amp Digitally controlled knobs for fine and coarse adjustment of