Power Module - EDAN FTS-3 Service Manual

FTS-3 Fetal Telemetry System Service Manual
Charge interface board ports to indicative light board

7.1.4 Power module

Power module outputs ＋12V and ＋5V and is responsible for charging management.
When the system is supplied by 90-264VAC power, power module transfers AC mains into 12V
DC and 5V DC power. When the system is cut off from the 90-264VAC powe, the power
modules transfer the battery power inside into 12V DC and 5V DC power.
Pin No. Symbol
1,2,3,4 VCC
5,6,7,8 GND
9,10
11,12
13,14
15,16
17,18
19,20
Figure 7- 6
- 21 -
Principle Introduction
TRANS1_TX
TRANS1_RX
TRANS2_TX
TRANS2_RX
TRANS3_TX
TRANS3_RX