GPS-3303  Bench Power Supply, Adjustable, Fixed, 3 Output, 0 V, 30 V, 0 A, 3 A. The GPS-3303 CAL from GW Instek is a GPS-x303 series, 195W, 3-channel linear DC power supply. Overload, reverse polarity protection and an output on/off switch keep the power supply and its load safe from unexpected conditions. A high regulation (0.01%+3mV), low fan acoustic noise and low ripple/noise (< 1mVrms, 5Hz to 1MHz) are maintained for channel 1 and 2 in constant voltage mode. Automated cooling fan speed control minimizes fan noise according to load conditions ensuring quiet operation.