Voltcraft dc power supplies voltcraft vlp 2403pro the vlp 2403pro is an electronically stabilized power supply from voltcraft with separate voltage and current regulators the device is characterized by low ripple and good load and power regulation the vlp 2403pro is convection cooled and needs no fans in addition it comes with an adjustable 3v to 6v dc output for digital circuits the main outputs are internally connected in parallel or in series via a rotary control complete with foldab