Solar cell power supply circuit

Patent · Tue Feb 28 00:00:00 EST 1984

OSTI ID:6652930

Higuchi, M

A solar cell power supply circuit for use in a calculator or equipment is disclosed. It includes a solar cell or cells, a back-up capacitor connected to the solar cells, and a circuit element connected to be responsive whether the electromotive force from the solar cells lies within a range of operation for a load element of the solar cells, typically an LSI semiconductor device. The back-up capacitor starts charging when the electromotive force of the solar cells falls out of the range of operation for the load element. Preferably, an alarm sound is delivered when the electromotive force of the solar cells is poor.

• Assignee: Sharp Kabushiki Kaisha (Japan)
• Patent Number(s): US 4434395
• OSTI ID: 6652930
• Resource Relation: Patent Priority Date: Priority date 25 Feb 1981, Japan; Other Information: PAT-APPL-352154
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
CALCULATORS
PHOTOVOLTAIC POWER SUPPLIES
CONTROL SYSTEMS
DESIGN
CAPACITIVE ENERGY STORAGE EQUIPMENT
CAPACITORS
CHARGE STATE
SOLAR CELLS
SWITCHING CIRCUITS
DIRECT ENERGY CONVERTERS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
POWER SUPPLIES
SOLAR EQUIPMENT
140600* - Solar Energy- Photovoltaic Power Systems