Abstract: A power supply (1) for a load in the form of a PCMCIA card (2) has and onboard GPRS class (10) module (not shown). The module, and therefore card (2), demands a load current iload that has an average value over time and periodic instantaneous peak values (ipeak) that are significantly higher than the average value. Power supply (1) includes a pair of input terminals (3) for connecting with a power source in the form of a regulated power supply (4) that is contained within a personal computer (not shown). Supply (4) supplies a source current iinput that is less than a predetermines current limit specified for the supply and which is less than the peak load current. A pair of output terminals (5) is electrically connected with terminals (3) and card (2). A supercapacitor device in the form of a single supercapacitor (6) is in parallel with terminals (3, 5) for allowing the load to be supplied the peak load current while maintaining the source current at less than the predetermined current limit.

Abstract: A power supply is for an electrical load in the form of a Notebook computer. The power supply includes first terminals which extend from the computer for releasably electrically connecting with a first energy storage device in the form of a battery during a first interval. A second energy storage device, in the form a second battery, releasably electrically connects with terminals during a second interval spaced apart from the first interval. This allows power to be supplied to the load during those intervals. A capacitive energy storage device supplies power to the load during a third interval that spans the spacing between the first and the second intervals.

Abstract: A control circuit (101) is configured for use with a load in the form of hardware (102) of a laptop computer (103). Circuit (101) includes input terminals (105, 106) for electrically connecting with respective terminals (107, 108) of a battery pack (109). The battery pack (109) supplies a battery current and has a predetermined maximum operational current. Circuit (101) also includes output terminals (111, 112) for electrically connecting in parallel hardware (102) and a supercapacitor (113). A controller (115) is disposed between the input and the output terminals for allowing the battery to transfer energy to hardware (102) and supercapacitor (113) while maintaining the battery current at less than the predetermined maximum operational current.

Abstract: A power supply (1) for a pulsed load (2) includes a first energy storage device in the form of a battery (3) which is in parallel with a second energy storage device in the form of a supercapacitor (4). Battery (3) and supercapacitor (4) are respectively modelled as: an ideal battery (7) in series with an internal resistance (8); and an ideal capacitor (9) in series with an equivalent series resistance (ESR) (10). Through use of a supercapacitor (4) having a low ESR with respect to the resistance (8), the power supply (1) facilitates continuity of supply to load (2). That is, during peak demand more of the load current will be supplied by supercapacitor (4) due to the lower ESR. Moreover, during times of lower load current demands the battery recharges the supercapacitor. This reduces the peak current needed to be provided by the battery and thereby improves battery longevity.

Abstract: A power supply (1) is for an electrical load in the form of a Notebook computer (2). Power supply (1) includes first terminals (3, 4) which extend from computer (2) for releasably electrically connecting with a first energy storage device in the form of battery (5) during a first interval. A second energy storage device, in the form a second battery (not shown), releaseably electrically connects with terminals (3, 4) during a second interval spaced apart from the first interval. This allows power to be supplied to the load during those intervals. A capacitive energy storage device, designated generally by reference numeral (6), supplies power to the load during a third interval that spans the spacing between the first and the second intervals.

Abstract: A control circuit (101) is configured for use with a load in the form of hardware (102) of a laptop computer (103). Circuit (101) includes input terminals (105, 106) for electrically connecting with respective terminals (107, 108) of a battery pack (109). The battery pack (109) supplies a battery current and has a predetermined maximum operational current. Circuit (101) also includes output terminals (111, 112) for electrically connecting in parallel hardware (102) and a supercapacitor (113). A controller (115) is disposed between the input and the output terminals for allowing the battery to transfer energy to hardware (102) and supercapacitor (113) while maintaining the battery current at less than the predetermined maximum operational current.

Abstract: A power supply (1) for a pulsed load (2) includes a first energy storage device in the form of a battery (3) which is in parallel with a second energy storage device in the form of a supercapacitor (4). Battery (3) and supercapacitor (4) are respectively modelled as: an ideal battery (7) in series with an internal resistance (8); and an ideal capacitor (9) in series with an equivalent series resistance (ESR) (10). Through use of a supercapacitor (4) having a low ESR with respect to the resistance (8), the power supply (1) facilitates continuity of supply to load (2). That is, during peak demand more of the load current will be supplied by supercapacitor (4) due to the lower ESR. Moreover, during times of lower load current demands the battery recharges the supercapacitor. This reduces the peak current needed to be provided by the battery and thereby improves battery longevity.

Abstract: A power supply (1) for a pulsed load (2) includes a first energy storage device in the form of a battery (3) which is in parallel with a second energy storage device in the form of a supercapacitor (4). Battery (3) and supercapacitor (4) are respectively modelled as: an ideal battery (7) in series with an internal resistance (8); and an ideal capacitor (9) in series with an equivalent series resistance (ESR) (10). Through use of a supercapacitor (4) having a low ESR with respect to the resistance (8), the power supply (1) facilitates continuity of supply to load (2). That is, during peak demand more of the load current will be supplied by supercapacitor (4) due to the lower ESR. Moreover, during times of lower load current demands the battery recharges the supercapacitor. This reduces the peak current needed to be provided by the battery and thereby improves battery longevity.

Abstract: A power supply (1) is for an electrical load in the form of a notebook computer (2). Power supply (1) includes first terminals (3, 4) which extend from computer (2) for releasably electrically connecting with a first energy storage device in the form of battery (5) during a first interval. A second energy storage device, in the form a second battery (not shown), releaseably electrically connects with terminals (3, 4) during a second interval spaced apart from the first interval. This allows power to be supplied to the load during those intervals. A capacitive energy storage device, designated generally by reference numeral (6), supplies power to the load during a third interval that spans the spacing between the first and the second intervals.