Voltcraft fixed voltage switch mode power supply bench voltcraft fsp 1225 the voltcraft fsp 1225 is a 375w fixed voltage switch mode power supply suitable for use in laboratories workshops and industry the fsp 1225 is highly efficient and produces 11 to 15v dc and 25a with a current limiter the output voltage can be adjusted via the potentiometer on the psus underside its steel plate enclosure makes the fsp 1225 suitable for use even in demanding industrial conditions voltcraft fsp 122