Theory Of Operation; Theory Of Operation; Primary Power - HP 8340B Manual

Power Supplies/Fan
Theory of Operation
PRIMARY POWER
Primary power
is supplied to the instrument transformer primary through the line filter
module.
The
voltage selector cam position provides correct power connections to the transformer for line
voltages
of 100, 120, 220, or
240 Vac
±10%,
at 47.5 to 66 Hz,
LINE MODULE
The line
module performs several functions:
•
The
main line fuse protects the instrument
from:
Line voltage
surges
Incorrect line
voltage
Line module, transformer, motherboard, or rectifier assembly shorts.
•
Line transient suppression.
•
Line voltage
configuration (see Figure
1-1).
1-2 Power Supplies/Fan Theory of Operation
HP 8340B/41B