JPS54121174A - Electronic circuit - Google Patents

Electronic circuit

Info

Publication number
JPS54121174A
JPS54121174A JP2850478A JP2850478A JPS54121174A JP S54121174 A JPS54121174 A JP S54121174A JP 2850478 A JP2850478 A JP 2850478A JP 2850478 A JP2850478 A JP 2850478A JP S54121174 A JPS54121174 A JP S54121174A
Authority
JP
Japan
Prior art keywords
circuit
voltage
high voltage
supplies
operating
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
JP2850478A
Other languages
Japanese (ja)
Inventor
Teruaki Tanaka
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2850478A priority Critical patent/JPS54121174A/en
Publication of JPS54121174A publication Critical patent/JPS54121174A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/02—Conversion or regulation of current or voltage

Abstract

PURPOSE:To achieve the longer life of batteries and the effective utilization of battery containing space by operating a high voltage circuit with a high voltage power source and operating a low voltage circuit with the voltage reduced from this supply voltage in circuits such as of an electronic watch. CONSTITUTION:12 is a high voltage circuit which operates by being supplied with a voltage E2 from a high voltage power source 11 such as lithium battery. 14 is a low voltage circuit which operates by being supplied with the voltage E1 reduced to 1/2 of the voltage E2 in a voltage reducing circuit 13. It supplies the clock pulses phi necessary for operation from a frequency dividing circuit 16 to the voltage reducing circuit 13, supplies the display data from a counter 17 to the high voltage circuit 12 and supplies the control pulses necessary for the display driving operation to be performed in the high voltage circuit 12. The contents of the high voltage circuit 12 are displaying latch, exclusive-OR circuits, etc. necessary for operating a liquid crystal display element 18. 19 indicates the portions to undergo circuit integration.
JP2850478A 1978-03-13 1978-03-13 Electronic circuit Pending JPS54121174A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2850478A JPS54121174A (en) 1978-03-13 1978-03-13 Electronic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2850478A JPS54121174A (en) 1978-03-13 1978-03-13 Electronic circuit

Publications (1)

Publication Number Publication Date
JPS54121174A true JPS54121174A (en) 1979-09-20

Family

ID=12250501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2850478A Pending JPS54121174A (en) 1978-03-13 1978-03-13 Electronic circuit

Country Status (1)

Country Link
JP (1) JPS54121174A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5617415A (en) * 1979-07-24 1981-02-19 Casio Comput Co Ltd Electric power supply system of electronic apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5617415A (en) * 1979-07-24 1981-02-19 Casio Comput Co Ltd Electric power supply system of electronic apparatus

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