Agilent 1200 Series Autosampler Reference Manual 257
Theory of Operation 8
The Main Power Supply Assembly
The main power supply comprises a closed assembly (no onsite repair
possibility).
The power supply provides all DC voltages used in the module except for the
voltages supplied by the lamp power supply to the deuterium and tungsten
lamps in the detectors. The line voltage can vary in a range from 100 – 120 or
220 – 240 volts AC ± 10 % and needs no manual setting.
To disconnect the instrument from line, unplug the power cord. The power
supply still uses some power, even if the power switch on the front panel is
turned off.
Figure 44 Main Power Supply (MPS) Blockdiagram
+ 3 6 V
s u p p l y
+ 2 4 V
s u p p l y
+ 5 V
s w i t c h i n g
r e g u l a t o r
l i n e a r v o l t a g e
r e g u l a t o r s
+ 3 6 V ( n o t u s e d )
+ 2 4 V / 4 . 5 A
+ 5 V / 3
A
+ 1 5 V / . 3 A
- 1 5 V / . 3 A
l i n e
v o l t a g e
p r i m a r y
c i r c u i t s
M P S
s e n s e
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