Power Supply - Keithley 707A Instruction Manual

Principles
of Operation
6.
1
0 Power
supply
The
major component
of
the
power
section
is
a
single
output
switching
power
supply.
Its
6.2V
output
is
distributed
to
the
backplane board
for the relay
coils
of the switching
cards,
and
to the voltage regulator board.
The
5V
output of
the volt-
age
regulator board
is
supplied
to
all
logic
circuitry, includ-
ing
that
on
the switching
cards,
and
to
the front
panel display
board.
6-19