Power Supply - Toshiba T200 User Manual

1.8

Power Supply

The power supply supplies five kinds of voltages to the computer's system board. The
computer's power supply has one microprocessor and it operates at 500 Hz. It contains the
following functions:
1. Determines if the AC adapter or battery is connected to the computer.
2. Detects DC output and circuit malfunctions.
3. Controls the LED icon and speaker.
4. Turns the battery charging system on and off and detects a fully charged
battery.
5. Determines if the power can be turned on and off.
6. Provides more accurate detection of a low battery.
7. Calculates the remaining battery capacity.
The power supply output rating is specified in Table 1-8.
Use for
System logic, FDD, HDD
RS-232C, Flash ROM
RAM, CPU
RS-232C
T200/T200CS
Table 1-8 Power Supply Output Rating
DC Regulation
Name voltage tolerance
(V)
VCC +5
12V +12
B3V +3.3
-9V -9
Maximum
current
(%) (mA)
±5 1,720
±5 120
±5 1243
15 15
Ripple
(mV)
100
240
100
150
1-15