Power Subsystem; Ac Power Adapter - Texas Instruments Extensa 660 Series Maintenance Manual

4.2.9 Power Subsystem

The notebook is equipped with a software/hardware monitored/controlled Power
Subsystem that minimizes battery usage for prolonged battery operation and
automatically recharges the batteries when the notebook is used with an AC adapter.

4.2.9.1 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:
Input Current:
Input Frequency:
100 to 250 VAC
Approximately 1.5 Amps
50 to 60 Hz
Theory of Operation 4-7