JPS56138339A - Transmitter for wireless - Google Patents

Transmitter for wireless

Info

Publication number
JPS56138339A
JPS56138339A JP4233180A JP4233180A JPS56138339A JP S56138339 A JPS56138339 A JP S56138339A JP 4233180 A JP4233180 A JP 4233180A JP 4233180 A JP4233180 A JP 4233180A JP S56138339 A JPS56138339 A JP S56138339A
Authority
JP
Japan
Prior art keywords
secondary battery
impedance
transistor
solar cell
low impedance
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.)
Pending
Application number
JP4233180A
Other languages
Japanese (ja)
Inventor
Toshio Abiko
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP4233180A priority Critical patent/JPS56138339A/en
Publication of JPS56138339A publication Critical patent/JPS56138339A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)

Abstract

PURPOSE:To supply the power for wireless transmitter semipermanently, by providing the light ray detection element between solar cells and secondary battery, which is at low impedance at the irradiation of external light and at high impedance at nonirradiation. CONSTITUTION:The solar cell is constituted with the silicon semiconductor element 1 generating electromotive voltage through the reception of solar rays 8, and the series circuit of resistance 11 and photodetector 12 is connected in parallel to the cell, and the photodetector 12 shows low impedance at photodetection and high impedance at nonreception. At daylight, the electromotive voltage of the solar cell 1 turns on the transistor 13 with the forward bias by the resistance 11 because of low impedance of the transistor 13 to flow the charging current to the secondary battery 2, and at night, the transistor 13 is off since the impedance of the detector 12 is high, and no discharge current in reverse direction from the secondary battery 2 to the solar cell 1 flows. Thus, since the secondary battery keeps to be charged with the sun, the power can be kept supplied to the transmission circuit semipermanently and the signal is transmitted from the antenna 6.
JP4233180A 1980-03-31 1980-03-31 Transmitter for wireless Pending JPS56138339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4233180A JPS56138339A (en) 1980-03-31 1980-03-31 Transmitter for wireless

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4233180A JPS56138339A (en) 1980-03-31 1980-03-31 Transmitter for wireless

Publications (1)

Publication Number Publication Date
JPS56138339A true JPS56138339A (en) 1981-10-28

Family

ID=12633017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4233180A Pending JPS56138339A (en) 1980-03-31 1980-03-31 Transmitter for wireless

Country Status (1)

Country Link
JP (1) JPS56138339A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6062197U (en) * 1983-10-06 1985-05-01 ニツタン株式会社 alarm device
WO1990013196A1 (en) * 1989-04-25 1990-11-01 Leon Steinhauer Device for telecommunication systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6062197U (en) * 1983-10-06 1985-05-01 ニツタン株式会社 alarm device
WO1990013196A1 (en) * 1989-04-25 1990-11-01 Leon Steinhauer Device for telecommunication systems

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