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Introduction to the Quaternary Pump
The Main Power Supply Assembly
The Main Power Supply Assembly
The main power supply comprises a closed assembly (no component-level
repair possibility).
The power supply provides all DC voltages used in the quaternary pump. The
line voltage can vary in a range from 100 – 120 or 220 – 240 volts AC ± 10 %
and needs no manual setting.
Figure 51 Main Power Supply (MPS) Block Diagram
WARNING 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.
No accessible hardware fuse is needed because the main power supply is
safe against any short circuits or overload conditions on the output lines.
+36V
supply
+24V
supply
+ 5V
sw itching
regulator
linear voltage
regulators
+36V (not used)
+24V / 4.5A
+5V / 3A
+ 15 V / .3 A
-1 5V / .3 A
lin e
voltage
prim ary
circuits
MPS
sense