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GB2166306A - Solar-energised computer - Google Patents

Solar-energised computer Download PDF

Info

Publication number
GB2166306A
GB2166306A GB08427156A GB8427156A GB2166306A GB 2166306 A GB2166306 A GB 2166306A GB 08427156 A GB08427156 A GB 08427156A GB 8427156 A GB8427156 A GB 8427156A GB 2166306 A GB2166306 A GB 2166306A
Authority
GB
United Kingdom
Prior art keywords
computer
solar
battery
energised
calculator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB08427156A
Other versions
GB8427156D0 (en
Inventor
Calven Kuo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aurora Mechatronics Corp
Original Assignee
Aurora Mechatronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aurora Mechatronics Corp filed Critical Aurora Mechatronics Corp
Priority to GB08427156A priority Critical patent/GB2166306A/en
Publication of GB8427156D0 publication Critical patent/GB8427156D0/en
Priority to JP1985010094U priority patent/JPS61126328U/ja
Publication of GB2166306A publication Critical patent/GB2166306A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Power Sources (AREA)
  • Calculators And Similar Devices (AREA)

Abstract

A calculator has a solar energy source 10, an alkali or dry mercury battery source, and a circuit which transfers the power input to the calculator from the solar source 10 to the battery when the light level falls below a predetermined level. The transfer circuit includes an integrated circuit having means to continue the supply of power to memory circuits when the calculator is turned off. <IMAGE>

Description

SPECIFICATION Solar-energised computer The present invention relates to a computer which is energised from solar energy.
Solar-energised computers are known, their disadvantage being that they fail to operate when the amount of illumination falling upon them drops below a predetermined level. When the amount of illumination becomes insufficient during operation, the numbers and signs will not only disappear but also erase from the memory.Thus the stored numbers or signs will not appear again even if the amount of illumination is subsequently restored.
The object of the invention is to correct the above disadvantage.
According to the present invention there is provided a solar-energised computer in which power is supplied to the computer from a solar cell when the amount of illumination is at or above a predetermined level, a battery also being provided to power the computer when the amount of illumination falls below said predetermined level, and a transfer circuit for transferring the power source, as required, between the solar cell and the battery.
The solar-energised computer preferably includes an alkali or dry mercury battery which with the solar cell provides a continuous power supply.
The transfer circuit conveniently includes an integrated circuit including means for continuing to supply the computer memory when the computer is switched off. In this way information may be stored in the computer and indicated again by pressing the "memory key" after the power source is switched on again.
It has been found that by means of the invention the life of the alkali or dry mercury battery can be three times longer than that of a known solar-energised computer.
The invention will now be described further by way of example with reference to the accompanying drawing the single Figure of which is a front eievational view of the computer contructed in accordance with the present invention.
The computer shown in the drawings is a calculator which may be hand-held or desk mounted.
The calculator has a solar panel 10 which powers the calculator when the amount of illumination lies at or above a predetermined level. The calculator also has an alkali battery (not shown) which is used to power the calculator when the amount of illumination is insufficient to activate the solar panel. A transfer circuit is provided for transferring the calculator power source between the solar panel and the battery in dependence upon the level of illumination present. The integrated circuit includes means for continuing to supply the computer memory after the computer has been switched off.

Claims (4)

1. A solar-energised computer in which power is supplied to the computer from a solar cell when the amount of illumination is at or above a predetermined level, a battery also being provided to power the computer when the amount of illumination falls below said predetermined level, and a transfer circuit for transferring the power source, as required, between the solar cell and the battery.
2. A computer as claimed in claim 1 in which the battery is an alkali or dry mercury battery.
3. A computer as claimed in claim 1 or claim 2 in which the transfer circuit includes an integrated circuit including means for continuing to supply the computer memory when the computer is switched off.
4. A solar-energised computer substantially as herein described with reference to and as illustrated in the accompanying drawings.
GB08427156A 1984-10-26 1984-10-26 Solar-energised computer Withdrawn GB2166306A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB08427156A GB2166306A (en) 1984-10-26 1984-10-26 Solar-energised computer
JP1985010094U JPS61126328U (en) 1984-10-26 1985-01-29

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08427156A GB2166306A (en) 1984-10-26 1984-10-26 Solar-energised computer
JP1985010094U JPS61126328U (en) 1984-10-26 1985-01-29

Publications (2)

Publication Number Publication Date
GB8427156D0 GB8427156D0 (en) 1984-12-05
GB2166306A true GB2166306A (en) 1986-04-30

Family

ID=64269148

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08427156A Withdrawn GB2166306A (en) 1984-10-26 1984-10-26 Solar-energised computer

Country Status (2)

Country Link
JP (1) JPS61126328U (en)
GB (1) GB2166306A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0372933A2 (en) * 1988-12-09 1990-06-13 Semiconductor Energy Laboratory Co., Ltd. Power supply for portable electric appliances

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1127980A (en) * 1966-09-29 1968-09-25 United States Time Corp Improvements in electric timing devices
GB1375844A (en) * 1970-10-30 1974-11-27
GB1424383A (en) * 1973-08-11 1976-02-11 Hawker Siddeley Dynamics Ltd Tpower systems for spacecraft or orbiting satellites
GB2025093A (en) * 1978-05-27 1980-01-16 Citizen Watch Co Ltd Pace timing device
GB2033680A (en) * 1978-10-09 1980-05-21 Accumulateurs Fixes Controlling the use of electrical energy available from anirregular source
EP0019222A1 (en) * 1979-05-15 1980-11-26 Mostek Corporation Circuit for electrically connecting a volatile memory to a power supply input terminal
GB1583904A (en) * 1976-10-05 1981-02-04 Suwa Seikosha Kk Charging device
WO1981002362A1 (en) * 1980-02-08 1981-08-20 Mostek Corp Multiplexed operation of write enable terminal of a memory circuit for control and backup power functions
GB2082854A (en) * 1980-08-27 1982-03-10 Seiko Instr & Electronics Charge control circuit
GB2132837A (en) * 1982-12-23 1984-07-11 Rca Corp Satellite power distribution system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5622117A (en) * 1979-08-01 1981-03-02 Hitachi Ltd Electric power supply system for cmos memory circuit
JPS59225417A (en) * 1983-06-06 1984-12-18 Hitachi Ltd Semiconductor memory

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1127980A (en) * 1966-09-29 1968-09-25 United States Time Corp Improvements in electric timing devices
GB1375844A (en) * 1970-10-30 1974-11-27
GB1424383A (en) * 1973-08-11 1976-02-11 Hawker Siddeley Dynamics Ltd Tpower systems for spacecraft or orbiting satellites
GB1583904A (en) * 1976-10-05 1981-02-04 Suwa Seikosha Kk Charging device
GB2025093A (en) * 1978-05-27 1980-01-16 Citizen Watch Co Ltd Pace timing device
GB2033680A (en) * 1978-10-09 1980-05-21 Accumulateurs Fixes Controlling the use of electrical energy available from anirregular source
EP0019222A1 (en) * 1979-05-15 1980-11-26 Mostek Corporation Circuit for electrically connecting a volatile memory to a power supply input terminal
WO1981002362A1 (en) * 1980-02-08 1981-08-20 Mostek Corp Multiplexed operation of write enable terminal of a memory circuit for control and backup power functions
GB2082854A (en) * 1980-08-27 1982-03-10 Seiko Instr & Electronics Charge control circuit
GB2132837A (en) * 1982-12-23 1984-07-11 Rca Corp Satellite power distribution system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0372933A2 (en) * 1988-12-09 1990-06-13 Semiconductor Energy Laboratory Co., Ltd. Power supply for portable electric appliances
EP0372933A3 (en) * 1988-12-09 1991-06-12 Semiconductor Energy Laboratory Co., Ltd. Power supply for portable electric appliances

Also Published As

Publication number Publication date
GB8427156D0 (en) 1984-12-05
JPS61126328U (en) 1986-08-08

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)