GE Corometrics 172

5-34 170 Series Monitor Revision C
2000947-004
Theory of Operation: Main Board Theory of Operation
Figure 5-20. Power Supply Section Block Diagram
5 V Linear Regulator
for Audio
5 V Linear Regulator
for Motor
5 V Linear Regulator
for Digital Logic
3.3 V Linear Regulator
for Digital Logic
3.3 V Linear Regulator
for Analog Circuitry
Power Status Comparator
Switching Pre-Regulator
+7.5 V Linear Pre-Regulator
+12 V
Input
Low Power +3.3 V Regulator
Power Switch Flip-Flop
Switching Regulator for
Recorder
 +24 V
 Shutdown digital control
 Sync input from ultrasound
timing
6 V
for
Ultrasound
+6 V
for
Ultrasound
+5 V
for
Ultrasound
Switching Regulator Shutdown
from Power Switch
Power Off Control