Input Voltage 110/120/220/240 
Input Frequency 47-63Hz 
Input Current 6/3A 
Line Regulation ±0.005% maximum over full range 
Load Regulation ±0.015% from zero to full load 
Output ripple <1mV (DC to 100kHz) 
Operating Temperature 0 - 70°C 
Dimensions (L x W x H) 17" x 13" x 5.3" (43cm x 33cm x 13.5cm) 
Weight 10 kg (22 lbs)
 
Sciencetech 500-125-QTH is an external 250W fixed power supply for QTH lamps. Being a linear power supply as oppose to a switching power supply, it produces a highly stabilized 24VDC noise free output. The unit accepts both 110-120VAC and 220-240VAC inputs.