SELF POWERED PORTABLE COMPUTER

摘要

A portable computer consists of a base unit (32) within which an electronic unit (34) is housed along with two power supply conductors (156, 157) for the electronic unit. The base unit includes a housing to receive a battery pack (87) with terminals for connection to the power supply conductors. The battery pack contains rechargeable batteries. A power supply control circuit (84) is also connected to the conductors (156, 157) and this includes a recharging circuit (160). When power is applied via an external socket (158) to the base unit the control circuit (89) and recharging circuit (160) are activated. A sensor device (170) is responsive to the presence of the battery pack (87) to supply the recharging current to the rechargeable batteries. When non-rechargeable batteries (103) are inserted in the housing no recharging current is supplied to them.