DEC VT220 - 9.2 Major Circuits and Components

9.2 MAJOR CIRCUITS AND COMPONENTS
The power
circuits,
board.
supply (Figure 9-2) consists of various components and
including circuits that physically mount on the logic
• AC input components
• AC conversion circuits
• Interboard connectors (Jl and J2)
• DC input circuits
• DC power ok
NOTE
Circuit illustrations in this chapter
are based on REV A of CS 5415651-9-1.
PS AND MONITOP
BOARD
LOGiC
BOARD
fDCl
L:.::J
DC
INPUT
COMPONENTS
AC
CONVERSION 1- __ ...,/
C1RCU!TS
AC
iNPUT
Figure 9-2 Power Supply Block Diagram
9-2