Wavetek 132 - Section 3 Circuit Description; General Circuit Description

SECTION
3
CIRCUIT
DESCRIPTION
GENERAL DESCRIPTION
di3Qf*3i
1
1
Noise Generator, Figure
3-1.
Basically, a square wave is applied to
the input
of
an
integrator
composed
of
a wide-band
differential dc
amplifier, integrating resistor and capacitor.
Output
of
the integrator is fed into the
hysteresis
switch.
The
hysteresis and output switches function
like
a
Schmitt trigger with the
limit points set at
the wave-
form
extremes,
firing
when the triangle wave
reaches
+
1.25 volts and
—1.25
volts.
When
firing
occurs,
the
hysteresis and
output switches are set, reversing the
square
wave
fed
into the integrator. Reversal of the
square
wave causes the triangle wave
to
reverse direc-
VCG
11