SELENIUM RECTIFIER APPLICATION CON8IDBRATION8 1491 



35 



30 



2000 



4000 6000 

 HOURS OF OPERATION 



8000 



Fig. 14 — Efifect of load current on forward aging. 



20 



1000 



2000 



3000 4000 1000 



HOURS OF OPERATION 



2000 



3000 



4000 



Fig. 15 — Forward aging characteristics. Comparison of room and +80**C 

 ambient temperature operation. 26-volt cells, resistance load, rated dc ampe. 

 input voltage — 80 per cent normal for +80*'C ambient and 90 per cent normal 

 for room ambient. 



