October 2013
Intermediate to advanced
312 pages
12h 10m
English
Content preview from The Maplin Electronic Circuits Handbook, 2nd Edition
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246 PROJECTS
Decrease [ACW
Figure
11.10 Volume control
potentiometer wiring
Screen
I0VI soldered
to
case
and earth
side
of
pot
terminals.
LHC
power
amplifier
l/P
LHC
tone
control
0/P
Ground/0 V
RHC
tone
control
0/P
RHC
power
amplifier
l/P
Pre-amplifier/general-purpose power supply
The pre-amplifier input and tone control modules previously described
require a stable supply of 30 V d.c. and, ideally, the left and right
channel circuits should derive their supplies from separate d.c. rails.
Figure 11.11 shows the circuit of a twin variable power supply which is
capable of providing up to 300 m A from each of the two outputs or up to
500 m A fro ...
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