JPS5679985A - Electronic wrist watch - Google Patents

Electronic wrist watch

Info

Publication number
JPS5679985A
JPS5679985A JP15839379A JP15839379A JPS5679985A JP S5679985 A JPS5679985 A JP S5679985A JP 15839379 A JP15839379 A JP 15839379A JP 15839379 A JP15839379 A JP 15839379A JP S5679985 A JPS5679985 A JP S5679985A
Authority
JP
Japan
Prior art keywords
lamp
alarm unit
channel transistor
voltage
constant
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
JP15839379A
Other languages
Japanese (ja)
Inventor
Masaaki Kato
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 JP15839379A priority Critical patent/JPS5679985A/en
Publication of JPS5679985A publication Critical patent/JPS5679985A/en
Pending legal-status Critical Current

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  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE: To prevent a circuit from malfunction by setting the operating voltage of a predriving TR for an alarm unit, lamp, etc., higher than that of an oscillating circuit while releasing the operation of a constant-current or constant-voltage circuit connected to the oscillating circuit while the alarm unit, lamp, etc., are in operation.
CONSTITUTION: While alarm unit 19 and lamp 21 are not driven, a constant- voltage source or constant-current source 24 performs prescribed operation and oscillating circuit 2 is applied with a prescribed voltage. Next, as alarm unit 19 and lamp 21 are driven, N channel transistor 25 turns on to apply the electric power voltage direct to oscillating circuit 2. In addition, the oscillation never stops owing to the operation of the alarm unit and lamp because the sum of threshold voltages of P channel transistor 22 and N channel transistor 23 is less than the threshold voltage of alarm channel transistor 14a for alarm unit predriving P or channel transistor 16a for lamp predriving P.
COPYRIGHT: (C)1981,JPO&Japio
JP15839379A 1979-12-06 1979-12-06 Electronic wrist watch Pending JPS5679985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15839379A JPS5679985A (en) 1979-12-06 1979-12-06 Electronic wrist watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15839379A JPS5679985A (en) 1979-12-06 1979-12-06 Electronic wrist watch

Publications (1)

Publication Number Publication Date
JPS5679985A true JPS5679985A (en) 1981-06-30

Family

ID=15670743

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15839379A Pending JPS5679985A (en) 1979-12-06 1979-12-06 Electronic wrist watch

Country Status (1)

Country Link
JP (1) JPS5679985A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62146984U (en) * 1986-03-10 1987-09-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62146984U (en) * 1986-03-10 1987-09-17

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