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Agilent Technologies E3632A User Manual page 46

Dc power supply
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Chapter 3 Front-Panel Operation
Programming Overvoltage Protection
Over Voltage
3
C l e a r t h e o v e r v o l t a g e c o n d i t i o n a n d e x i t t h i s m e n u .
N o w , w h e n y o u p r e s s
d i s p l a y e d f o r a s e c o n d a n d t h e
o u t p u t w i l l r e t u r n t o m e t e r m o d e .
• R e m o t e i n t e r f a c e o p e r a t i o n :
VOLT:PROT {<voltage>|MIN|MAX}
VOLT:PROT:STAT {OFF|ON)
VOLT:PROT:CLE
N o t e
T h e p o w e r s u p p l y ' s O V P c i r c u i t c o n t a i n s a c r o w b a r S C R , w h i c h e f f e c t i v e l y
s h o r t s t h e o u t p u t o f t h e p o w e r s u p p l y w h e n e v e r t h e o v e r v o l t a g e c o n d i t i o n
o c c u r s . I f e x t e r n a l v o l t a g e s o u r c e s u c h a s a b a t t e r y i s c o n n e c t e d a c r o s s t h e
o u t p u t , a n d t h e o v e r v o l t a g e c o n d i t i o n i n a d v e r t e n t l y o c c u r s , t h e S C R w i l l
c o n t i n u o u s l y s i n k a l a r g e c u r r e n t f r o m t h e s o u r c e ; p o s s i b l y d a m a g i n g t h e
p o w e r s u p p l y . T o a v o i d t h i s a d i o d e m u s t b e c o n n e c t e d i n s e r i e s w i t h t h e
o u t p u t a s s h o w n b e l o w .
44
Over Voltage
OVP
Figure 3-1. Recommended Protection Circuit for Battery Charging
k e y a g a i n , t h e " D O N E " m e s s a g e i s
a n n u n c i a t o r w i l l n o t b l i n k a n y m o r e . T h e
Set the OVP level
Disable or enable the OVP circuit
Clear the tripped OVP circuit

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