Current Control Using External Resistor - Kenwood PS Series Instruction Manual

Regulated dc power supply
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6-14

Current Control using External Resistor

The
o u t p u t c u r r e n t
n e c t i n g a r e s i s t o r
The
d e s c r i p t i o n b e l o w a s s u m e s t h a t o n l y
e x t e r n a l r e s i s t o r and o t h e r s a r e c o n t r o l l e d on t h e f r o n t
D D e a c t i v a t e
t h e POWER s w i t c h ®
c o n t r o l
s w i t c h e s
c o n t r o l s w i t c h e s OFF.
2 ) C o n n e c t a n e x t e r n a l r e s i s t o r b e t w e e n p i n s No. 9 a n d No. 10 o f t h e c o n t r o l
t e r m i n a l b l o c k J i ©
3 ) A c t i v a t e t h e POWER s w i t c h ®
o p e r a t i o n
a f t e r a p p r o x . f o u r
4 ) P r e s s
t h e L I M k e y ©
r e s i s t a n c e t o a d j u s t t h e c u r r e n t o f t h e PS S e r i e s t o an i n t e n d e d v a l u e .
NOTE: Note t h a t s e t c u r r e n t e x c e e d s t h e r a t e d c u r r e n t o f t h e PS S e r i e s i f p i n s
Nos.
9 and 10 o f J i a r e opened w i t h S i s e t t i n g shown above.
Use
t h e e x t e r n a l r e s i s t o r
o r m a l f u n c t i o n i n g .
c i r c u i t
i n t h e PS S e r i e s . )
43
o f t h e P S S e r i e s may be c o n t r o l l e d f r o m o u t s i d e
( o f 0 t o a p p r o x . 10 k Q ) .
S i
s e t t i n g
To
l o u t p u t
on t h e f r o n t p a n e l
1 a n d 8 o f S i ©
on t h e r e a r
p a n e l .
( s w i t c h d e p r e s s e d ) .
s e c o n d s .
; s e t c u r r e n t
i n a f l o a t i n g c o n d i t i o n
( T h e s e
p i n s a r e c o n n e c t e d w i t h
t h e c u r r e n t
i s c o n t r o l l e d u s i n g an
S e t s w i t c h e s 1 and 8
R i
Use
a s h i e l d e d c a b l e o r a p a i r o f
t w i s t e d w i r e s .
I o : Ooutput c u r r e n t o f PS S e r i e s ( A )
R i
: E x t e r n a l r e s i s t o r (Q)
I F S : R a t e d c u r r e n t o f PS S e r i e s ( A )
( s w i t c h r e l e a s e d ) . S e t
on t h e r e a r p a n e l ON.
T h e PS S e r i e s i s r e a d y f o
i s d i s p l a y e d
on t h e ammeter ( 3 ) .
by c o n -
p a n e l .
S e t a l 1
o t h e r
V a r y
t o p r e v e n t
a c c i d e n t s
t h e a n a l o g
c o n t r o l

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