Power Supply Overview

Figure 2-14 shows a block diagram of the C204 PSB/PSE board.

Power SW.

Fuse

Surge Cut (at Power On)

Input Filter Circuit

Rectifier Circuit

Smoothing Circuit

AC Inlet

AC Source

+37V Line Switching 1/2

Smoothing Circuit

PC101

PC102

PC1

Constant

Voltage

Control

Over Voltage Protection

Power Down Control

Constant

Voltage

Control

Over Voltage Protection

Current Limit Monitoring

+37V Line Switching 2/2

+5V Regulator

Smoothing Circuit

PC201

Constant

Voltage

Control

Current Limit Monitoring

Over Current

GP1

Protection

GP2

+5V Regulator Circuit

GL 777~

O CL

VP3 Down Monitoring

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