HP 13255 Technical Information page 13

PRIMARY
POWER
POWER SUPPLY PeA
I
LINE
~
RECTIFIER
I
LOGIC
..
POWER
SUPPLY
I
L._
-
+5C +16V
1-
- , ,
I
LOW
+16V~ LINE
DETECTOR
I
4.915 MHz
DIVIDE
OSCILLATOR
~
BY 100
COUNTER
I
~II~
CHOKE
INPUT
----.
CHOPPER
POWER
-
SUPPLIES
~ ~
- -
-
BASE BASE
DRIVE 1 DRIVE
2
CURRENT
SENSE
-
-
Lot
BASE
CURRENT
~
DRIVE
~
STEERING
LIMIT
VOLTAGE REGULATOR
---.
VARIABLE
4 - -
AND POWER
ONE-SHOT ON RESET
I
I
--
-
+5V
--
il
I
~
I
P
+12V
+5V
-12V
-42V
WR ON
o r - -
I I
POWER SUPPLY CONTROL PeA
+5V
~
~~_~======~======~~======~========~========~~r--SYSCLK
Figure 1
Power Supply Module Block Diagram
SEP-06-77 13255-91142