Fluke 341A - Introduction; Block Diagram Analysis

341
A
343A
3-1.
INTRODUCTION
3-2.
The
following
paragraphs
describe the
theory of
operation of
the
Model 341 A
and
343A
Voltage Calibra-
tors.
For the
block
diagram
analysis,
refer to
the block
diagram
shown in
Figure 3-1,
and for
the
detailed
circuit
analysis,
refer to
the
detailed
circuit
schematic at
the end
of
Section V.
3-3. BLOCK
DIAGRAM
ANALYSIS
34.
The
instrument
circuitry is
basically that
of
a
high
gain
operational
amplifier,
as shown in
Figure
3-2.
The
driving signal is
generated
in
a
precision
voltage
reference
and
applied
through a
range
control network to
the am-
plifier input.
The
series regulator,
which is
the output
stage
of the
amplifier,
provides the high
voltage
capability.
3-1