SLS SERIES MANUAL
17
118132-001 RevA
Chapter 4
P
RINCIPLES
O
F
O
PERATION
The SLS Series of high voltage power supplies utilizes
sophisticated power conversion technology. A variety of
analog, digital and power conversion techniques are used.
The intention of the Principles of Operation is to
introduce the basic function blocks that comprise the SLS
power supply. For details on a specific circuit, consult
Spellman’s Engineering Department.
The SLS power supply is basically a low voltage AC to
high voltage DC power converter. Within the power
supply, conversions of AC to DC, then to high frequency
AC, then to high voltage DC take place. By reviewing
further the sub-assemblies, a basic understanding of the
process can be gained.
4.1 Chassis
The SLS Series is a compact, high efficiency, high
voltage power supply. The unit can supply up to 2000
watts of DC power. Output voltages from 160kV to
360kV can be generated.
The energy levels used and generated by the
power supply can be lethal! Do not attempt to
operate the power supply unless the user has a
sufficient knowledge of the dangers and hazards
of working with high voltage. Do not attempt to
approach or touch any internal or external
circuits or components that are connected or
have been connected to the power supply. Be
certain to discharge any stored energy that may
be present before and after the power supply is
used. Consult IEEE recommended practices for
safety in high voltage testing
#510-1983
.
4.2 Line Rectification
And Filtering
Basic three phase rectification and capacitive filtering
provides the DC rail voltage for the high frequency
inverter.
WARNING
