Table of Contents
Advertisement
13
C.
OUTPUT CIRCUIT
The waveform of the output voltage can be selected with SK3
.
The sine
wave is obtained by connecting the amplifier output direct to the atte
nuator R2. To obtain the squarewave
voltage,
the sinewave signal is
applied to an amplitude limiter TS6-TS7.
The limiting action can be adjusted with potentiometer R20.
Diode GR3 serves for rectification of the sinewave controI voltage and
thus determines the working point of
TS6.
The amplitude of the squarewave output signal is stabilised by the bi ased
diode GR2. The bias voltage for GR2 is provided by voltage divider
R29-GRl.
D. POWER SUPPLY
The instrument is supplied by two series connected 9 V batteries.
Advertisement
Table of Contents
