100-Radio-Hookups-EICO-1924

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Pls. 41
Fig. 41. A tuned plate regenerative receiver employing a
lariocoupler, variable condenser and a variometer in connection
with a one stage andio frequency amplifier. The jack shown can
be replaced by two binding posts but it becomes handy when
different phones or a loud speaker are often interchanged.
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Eta. 42
Fig. 42. This is the same arrangement as shown in Fig. 40
except that filament control jacks are need. plugging in en
of these jacks
any
automatically lights the Usveata of the
use
tubes
which are
la
cut off when the plug is taken out.
24