Motorola R-2001A - Page 94

JT BOOST AC
4-6
17-19
VI
CR21 , 22, 54 , 55
1-3
14-16
11 , 12 ,
23-25
17
6, 9
5, 10
4-11
Pl-7
P1-3
'"I MAIN AC
AC RECTIFIER
I
AND
I
FILTER
'": DC INPUT I
DC RELAY Kl, U
7
,
AND h
CONTROL
t CAl, 01
-.. AC SENSE
AC SENSE
,
RECTIFIER
P
2
PWR OFF
014 - 16 , 18
I
-..I PWR STOBY
POWER
'I
SUPPLY
I PWR ON
CONTROL
f--
CENTER TAP L.V .
X
FORMER
,
'"
H.V . CONTROL LINE
,
. ~ ..... ' --
~--
I
BOOST
BATIERY l
1 RECTIFIER
CHARGER I
CONTROL
I
017
r
FREO
l
STO
I CONTROL I
023-25
-112VOLT l
REGULATOR J
05 , 6, 8
DC BUS
PULSE l
r---=1 WIDTH
,, ,O OULATOR I
1
HIGH
lo7 . 29
VO LT
--l HIGH / LOW ,I
CO NTROL I
VOLT
~
SHUT DOWN
m
020 , 22, 281
....
l E WIDTH
CONTROL
...
...
U5
I CHOPPER GEN~
Sl
AND
I DRIVER
OVERTEMP l A
SHUTDOWN~-
09-1 2
rl CHO PPER h
T2
~
)-
T4
li
~
OVER CURRENT
-
I C URRENT t-
OET
SH-
l XFORME R
-:!:-
CURRENT
-
---'
h
LIMIT
U3
I
J I
u•~• 1 '-'''""
'
BATI VOLT"
DC LEO
'
AC LEO
'
FREO . STO OVEN
SUPPLY
'
•12V TO HV SUPPLY "
CENTER TAP HY XFORMER
'
04 DRIVE
'
06 DRIVE
+35V"
•13V'
'
LOW VOLT
RECTIFIER
-12V
AND
-5 .2 V'
FILTER
+5.2V
CR17-20
'
CR26-35
•115V
'
-115V
'
P1 - 10
P1 -13
? 2-2
P2 -1
P1 -8
P1-2
Pl-7
Pl-4
Pl-5
Pl-1
P1-5 .6
Pl-2
P1-4
Pl -3
Pl-7
Pl-8
VOLTAGE COMP
·vvoLTI
ADJ .
VREF +7 . 9V
Pl-1
8521-29
Figure 7-1. Low Voltage f>ower Supply A1
Block Diagram
, 7-3 , 7-4