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JPS5740671A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5740671A
JPS5740671A JP11627080A JP11627080A JPS5740671A JP S5740671 A JPS5740671 A JP S5740671A JP 11627080 A JP11627080 A JP 11627080A JP 11627080 A JP11627080 A JP 11627080A JP S5740671 A JPS5740671 A JP S5740671A
Authority
JP
Japan
Prior art keywords
motor
pulse
speaker
gate
sound
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
JP11627080A
Other languages
Japanese (ja)
Inventor
Yosuke Yoshida
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP11627080A priority Critical patent/JPS5740671A/en
Publication of JPS5740671A publication Critical patent/JPS5740671A/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
    • G04G19/08—Arrangements for preventing voltage drop due to overloading the power supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To minimize a break of sound in a manner to keep a motor running in a reliable manner, by a method wherein, in case a pulse for generating an alarm sound and a pulse for driving a motor are overlapped, a current flowing to a speaker is limited and out off. CONSTITUTION:With a normal pulse from a normal pulse generating circuit 3 applied to a step motor 8, an N type MOSFET15 is cut off by a low-level output of an NOR gate 11. This connects a sound generating circuit 10 and a resistance 14, and an N type MOSFET16 controls an N type bipolar transistor 18 to limit a feed current from a speaker. In case the motor does not run thereupon, an output of a nonrotary detection circuit 9 becomes a high level, and is applied to a correction pulse motor 8 from a correction pulse generating circuit 4 via an AND gate 6. Simultaneously, the FET15 and 16 are cut off via the gate 11 and an inverter 12, a transistor is turned OFF, and no current is supplied to the speaker 17. This reduces a break of an alarm sound and permits the reliable running of a motor.
JP11627080A 1980-08-22 1980-08-22 Electronic watch Pending JPS5740671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11627080A JPS5740671A (en) 1980-08-22 1980-08-22 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11627080A JPS5740671A (en) 1980-08-22 1980-08-22 Electronic watch

Publications (1)

Publication Number Publication Date
JPS5740671A true JPS5740671A (en) 1982-03-06

Family

ID=14682914

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11627080A Pending JPS5740671A (en) 1980-08-22 1980-08-22 Electronic watch

Country Status (1)

Country Link
JP (1) JPS5740671A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0387084A (en) * 1989-06-14 1991-04-11 Matsushita Electric Ind Co Ltd Narrow bandwidth laser equipment
JPH05211368A (en) * 1991-07-15 1993-08-20 Koninkl Ptt Nederland Nv Amplification apparatus nonsensitive to polarized light

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0387084A (en) * 1989-06-14 1991-04-11 Matsushita Electric Ind Co Ltd Narrow bandwidth laser equipment
JPH05211368A (en) * 1991-07-15 1993-08-20 Koninkl Ptt Nederland Nv Amplification apparatus nonsensitive to polarized light

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