Passport 5-Lead, 5L, LT, XG Service Manual
0070-00-0420
2 - 53
Theory of Operation
Block Diagrams
FIGURE 2-21
Oscillator/Charge Pump Circuit
Power Module
This module is a “self contained” 15W DC/DC converter that provides three regulated
outputs. This module will accept input voltages ranging from 9V DC to 18V DC and
produces outputs of 5V (@1.5A), 15V (@250ma) and -15V (@250ma).
FIGURE 2-22
Power Module Diagram
TP1
VIN
IN914
CR7
C4
1
2
3
R11
U2
CD4093BE
SWITCH
OSCILLATOR
IRFZ40
Q3
TP2 12 R14
R9
100K
CR5
CR4
CR3
.01UF
.1UF
7
13
14
4
12
CR6
IN914
C6
C5
.01UF
C3
CHARGE PUMP
B
D
1 GND
+17
N/C
+5
-15
COM
+15
15 W
POWER
MODULE
Summary of Contents for Passport 5-Lead
Page 1: ...Service Manual 5 Lead 5L LT XG Datascope Passport 0070 01 0420 indd 1 4 11 11 4 45 PM...
Page 2: ...5 Lead 5L LT XG Service Manual Datascope Passport 0070 02 0420 indd 1 4 11 11 4 45 PM...
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Page 544: ...0070 00 0420 Rev T April 13 2011...