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4.2.8.1 AC Power Adapter
The computer is equipped with a universal AC power adapter that converts AC voltage into DC
voltage (approx. 46 Watts of power) used to operate the notebook and charge the batteries. The
specifications for the AC adapter include:
Input Voltage: 100 to 250 VAC
Input Current: Approximately 1.5 Amps
Input Frequency: 50 to 60 Hz
4.3. Detailed Circuit Theory
The remainder of this chapter provides chip-level circuit description for the Extensa Series
Notebooks.
4.3.1 Major Components
Table 4-1 shows a listing the of the major components used in the Extensa Series Notebooks.
Table 4-1
Major Chips List
Component
M1521
M1523
M6377
65550
TI1130
NS87336VJG
ES1878
T62.045.C.00
DAC-07B008
DC-R05
M38802
4-4
Vendor
Acer
Acer
Acer
C&T (Chips & Technology)
Texas Instruments
NS (National Semiconductor)
ESS Technology
Ambit
Delta
Delta
Phoenix
Description
PCI, cache and memory controller (Host-PCI
Bridge)
System controller chip (PCI-ISA Bridge)
Power management controller
Video controller
PCMCIA controller
Super I/O controller
Audio controller
Charger board
LCD inverter
LCD ID board
Keyboard encoder and decoder
Theory of Operation
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