SL2KW SERIES MANUAL
17
118088-001 REV C
Chapter 4
P
RINCIPLES
O
F
O
PERATION
The SL2KW Series of high voltage power supplies
utilizes sophisticated power conversion technology. A
variety of analog, digital and power conversion
techniques are used throughout. The intention of the
Principles of Operation is to introduce the basic function
blocks that comprise the SL2KW power supply. For
details on a specific circuit, consult Spellman’s
Engineering Department.
See Table 4.1 for a list of the main assemblies found in a
typical SL2KW power supply.
Due to the many variations within the SL2KW
Series, drawing numbers may differ from unit to unit.
The SL2KW power supply is basically an AC to 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 SL2KW is a compact, high efficiency, high voltage
power supply. The power supply can supply up to 2000
watts of DC power. Output voltages of up to 50kV 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 single phase rectification provides the DC voltage
for the high frequency inverter.
WARNING
