Back-up electrical power supplies
First Claim
1. A back-up electrical power supply in combination with an electrically powered device which requires a continuous electrical supply and which is connected to input and output connections and to a normal power supply via plug and socket means,plug and socket means connecting the back-up power supply to the electrical device and to the normal power supply to enable the back-up power supply and the electrical device to be removed as a unit from the input and output connections and the normal power supply, andcircuit means for causing the back-up power supply to take over the function of providing said electrical supply to the said device when the device is unplugged together with the back-up electrical power supply, from the normal power supply.
6 Assignments
0 Petitions
Reexamination
Accused Products
Abstract
A back-up electrical power supply module provides a back-up supply for a plug-in volatile electrical device such as a memory module. The memory module has a dual-in-line pins which engage socket openings of a standard dual-in-line circuit board connector. The back-up supply module is mounted on top of the memory module and has dual-in-line pins which contact corresponding ones of the pins of the memory module and corresponding socket openings. In this way the back-up supply module and the memory module can be unplugged as a unit and when unplugged, the back-up supply will maintain the contents of the volatile memory module intact.
33 Citations
14 Claims
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1. A back-up electrical power supply in combination with an electrically powered device which requires a continuous electrical supply and which is connected to input and output connections and to a normal power supply via plug and socket means,
plug and socket means connecting the back-up power supply to the electrical device and to the normal power supply to enable the back-up power supply and the electrical device to be removed as a unit from the input and output connections and the normal power supply, and circuit means for causing the back-up power supply to take over the function of providing said electrical supply to the said device when the device is unplugged together with the back-up electrical power supply, from the normal power supply.
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9. A module for mounting on a printed circuit board connector socket, the module comprising
a housing, a plurality of connector pins supported by the housing for engaging corresponding openings in the connector socket, a volatile memory located in the housing, a back-up electrical power supply located in the housing, and circuit means arranged to supply the memory with power from the back-up electrical power supply when the power which is normally supplied through the connector pins ceases.
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10. A back-up electrical power supply module comprising
a housing, a back-up power supply enclosed with the housing, the housing and supply being formed as a plug-in unit, the unit being arranged to be plugged into a memory module having a volatile memory, and circuit means arranged to supply the memory module with power from the back-up power supply when the normal supply of power to the memory module ceases.
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13. A memory module incorporating a volatile memory and arranged to be plugged into a connector of a printed circuit board,
a back-up supply module incorporating a back-up power supply, and control means for supplying power from the back-up power supply to the memory when the power from the printed circuit board is absent, the memory module being arranged to be plugged into the back-up supply module or into the said connector in parallel with the back-up supply module.
Specification