Voltage sensitive switch

Details Voltage sensitive switch Voltage sensitive switch

1990-05-25

1991-09-17

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323266, 363 89, 307 66, 307 87, G05F 156

Patent

active

050498053

ABSTRACT:
An apparatus which connects/disconnects battery from a load such as a computer system includes a first circuit arrangement which sets a first reference voltage level at which the energy source is connected through an FET device to the computer system, a second circuit arrangement that sets a second voltage level at which the energy source is disconnected by the FET device from the computer system and a third circuit arrangement which controls the FET device so that said FET device is forced into either its ON or OFF state once one of the reference voltages is reached. A second apparatus which reduces power dissipation in a battery charger power device by forcing the input voltage to track the battery voltage as the battery charges/discharges.

REFERENCES:
patent: 3754182 (1973-08-01), Morris et al.
patent: 4327298 (1982-04-01), Burgin
patent: 4788450 (1988-11-01), Wagner
patent: 4841160 (1989-06-01), Yon et al.
patent: 4857756 (1989-08-01), Haneda

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