Philips PM2517E - Detailed Circuit Analysis

20
3.3. DETAILEO CIRCUIT DESCRIPTION
3.3.1. General
(
Fig. 11)
The PM2517
is built up of the analog. ADC and
digiral section. All
input signals
are converted
Into a
d.c. voltage
signal. The
d.c. voltage signal is supplied
to the
ADC and converted
into a digital
signal.
ln the digital section
the
digital signal trom the ADC
is used to
control the analog
section and
ADC and
to supply the
countrng
results to the display
(Fig.
11).
[-,
r
'..t
r
*--l
L
ö;
L
t
OIG
IÄL
COIIIROL
D SPLAY
Fig. t
l.
In
the'detailed circuit description the sections
will be described
3.3.2- Analog section
3.3.2.1.
Dc
voltage measurcments
(Fig.
12)
separately
in the order as shown
in figure
'1
1.