3.3.5.2.
Multi-purpose instruments
can be used as indicators of rectified currents of demodulators in AM and FM receivers and as limiters
with FM receivers and TV sets.
Fig. 3.3-9
Connection to AM, FM demodulators or FM limiter
3.3.5.3.
For determining the gain of the IF stage
in AM receivers, the
HF
signal must be decoupled. This can be achieved by means of a voltage divider
probe (ratio of
10
:
1,
for example) with low detuning and damping. The resonant circuit probe,
described before,
is
also suited.
Fig. 3.3-10
Determination of gain of an AM stage
To Next Page
Loading...
