JPS5754434A - Denkikikyojotaihochisochi - Google Patents

Denkikikyojotaihochisochi

Info

Publication number
JPS5754434A
JPS5754434A JP12988980A JP12988980A JPS5754434A JP S5754434 A JPS5754434 A JP S5754434A JP 12988980 A JP12988980 A JP 12988980A JP 12988980 A JP12988980 A JP 12988980A JP S5754434 A JPS5754434 A JP S5754434A
Authority
JP
Japan
Prior art keywords
electric equipment
amplified
oscillator
low frequency
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
JP12988980A
Other languages
English (en)
Other versions
JPS637493B2 (ja
Inventor
Yoshio Yamagishi
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 JP12988980A priority Critical patent/JPS5754434A/ja
Publication of JPS5754434A publication Critical patent/JPS5754434A/ja
Publication of JPS637493B2 publication Critical patent/JPS637493B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
JP12988980A 1980-09-18 1980-09-18 Denkikikyojotaihochisochi Granted JPS5754434A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12988980A JPS5754434A (ja) 1980-09-18 1980-09-18 Denkikikyojotaihochisochi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12988980A JPS5754434A (ja) 1980-09-18 1980-09-18 Denkikikyojotaihochisochi

Publications (2)

Publication Number Publication Date
JPS5754434A true JPS5754434A (ja) 1982-03-31
JPS637493B2 JPS637493B2 (ja) 1988-02-17

Family

ID=15020847

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12988980A Granted JPS5754434A (ja) 1980-09-18 1980-09-18 Denkikikyojotaihochisochi

Country Status (1)

Country Link
JP (1) JPS5754434A (ja)

Also Published As

Publication number Publication date
JPS637493B2 (ja) 1988-02-17

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