The 63941 is the most economical power supply for 10 and 20W QTH lamps. Choose this supply if you don't need all the features of our radiometric power supplies, and you don't need to operate lamps over 20 W.
Low Light Ripple
The output stability of QTH lamps run with the 63941 is <2%, more than adequate for many measurements. Remember to change lamps before they exceed their average life; light output decreases as lamps age. Our 10 and 20 W lamps, models 6318 and 6319 , have a 100-hour average life.
