JPS552949A - Pulse waveform generating circuit - Google Patents

Pulse waveform generating circuit

Info

Publication number
JPS552949A
JPS552949A JP7599078A JP7599078A JPS552949A JP S552949 A JPS552949 A JP S552949A JP 7599078 A JP7599078 A JP 7599078A JP 7599078 A JP7599078 A JP 7599078A JP S552949 A JPS552949 A JP S552949A
Authority
JP
Japan
Prior art keywords
circuit
alarm
given
signal
level signal
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.)
Granted
Application number
JP7599078A
Other languages
Japanese (ja)
Other versions
JPH0252232B2 (en
Inventor
Yoichi Miyagawa
Shigemasa Sato
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.)
NEC Corp
NEC Engineering Ltd
Original Assignee
NEC Corp
NEC Engineering Ltd
Nippon 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 NEC Corp, NEC Engineering Ltd, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7599078A priority Critical patent/JPS552949A/en
Publication of JPS552949A publication Critical patent/JPS552949A/en
Publication of JPH0252232B2 publication Critical patent/JPH0252232B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Tests Of Electronic Circuits (AREA)

Abstract

PURPOSE:For cutting down the time required for operation check, to measure with a Braun tube the signal cut down for the operation check of an alarm mechanism. CONSTITUTION:Given level signal is transmitted to change-over circuits 24 and 28 through a test speed-up circuit 34 at the time previously fixed for generating alarm sound. Signal with such a level as represented by ordinary waveform mode is fed to an alarm control circuit 30. Given lelel is transmitted to an alarm generating circuit 32 and converted into alarm sound. For checking the operation of an alarm mechanism, a high level signal is applied on said test speed-up circuit 34 forcibly through a terminal 25. When having received given level signal, a change-over circuit 28 feeds continuous pulses with a given synchronousness to a terminal 21. Said signals are converted into the ones reduced in frequency, which is measured by a Braun tube for example.
JP7599078A 1978-06-22 1978-06-22 Pulse waveform generating circuit Granted JPS552949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7599078A JPS552949A (en) 1978-06-22 1978-06-22 Pulse waveform generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7599078A JPS552949A (en) 1978-06-22 1978-06-22 Pulse waveform generating circuit

Publications (2)

Publication Number Publication Date
JPS552949A true JPS552949A (en) 1980-01-10
JPH0252232B2 JPH0252232B2 (en) 1990-11-09

Family

ID=13592211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7599078A Granted JPS552949A (en) 1978-06-22 1978-06-22 Pulse waveform generating circuit

Country Status (1)

Country Link
JP (1) JPS552949A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002880A1 (en) * 1979-06-19 1980-12-24 Fujitsu Ltd Integrated circuit having frequency divider circuit adaptable for high-speed testing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52113260A (en) * 1975-12-23 1977-09-22 Ebauches Sa Electronic clock

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52113260A (en) * 1975-12-23 1977-09-22 Ebauches Sa Electronic clock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002880A1 (en) * 1979-06-19 1980-12-24 Fujitsu Ltd Integrated circuit having frequency divider circuit adaptable for high-speed testing

Also Published As

Publication number Publication date
JPH0252232B2 (en) 1990-11-09

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