Voltcraft fixed voltage switch mode power supply bench voltcraft fsp 2405 the voltcraft fsp 2405 is a 145w fixed voltage switch mode power supply suitable for use in laboratories workshops and industry the fsp 2405 is highly efficient and produces 24 to 29v dc and 5a with a current limiter the output voltage can be adjusted via the potentiometer on the psus underside its steel plate enclosure makes the fsp 2405 suitable for use even in demanding industrial conditions voltcraft fsp 2405