JPS5464450A - Generator for attenuation signal - Google Patents

Generator for attenuation signal

Info

Publication number
JPS5464450A
JPS5464450A JP13135077A JP13135077A JPS5464450A JP S5464450 A JPS5464450 A JP S5464450A JP 13135077 A JP13135077 A JP 13135077A JP 13135077 A JP13135077 A JP 13135077A JP S5464450 A JPS5464450 A JP S5464450A
Authority
JP
Japan
Prior art keywords
charging
signal
output
capacitor
switch
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
JP13135077A
Other languages
Japanese (ja)
Other versions
JPS5939758B2 (en
Inventor
Hiroshi Kito
Kazuo Takahagi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP52131350A priority Critical patent/JPS5939758B2/en
Publication of JPS5464450A publication Critical patent/JPS5464450A/en
Publication of JPS5939758B2 publication Critical patent/JPS5939758B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape

Abstract

PURPOSE:To obtain the attenuation signal no change in waveform, by providing the detection circuit outputting the output when the voltage of capacitor charging and discharging with the switch is within a given range, and by performing charging or discharging other capacitor through gate switching with this output. CONSTITUTION:When the switch 1 is depressed, transistors TrT1 is turned on, constant current circuit 2 is operated, charging the capacitor C1. When the charging voltage exceeds Va, output is made from the comparator 3, turning on TrT3. When the charging voltage exceeds Vb, the comparator 4 makes output, turning of TrT2. Thus, TrT4, T5 are turned on and the capacitor C2 is charged up with the signal c in a short time. After the completion of charging, the attenuation signal d is outputted at the output terminal 8 through TrT6 and T7. When the modulation signal is fed from the terminal 9 via TrT8 connected to the base of TrT6, the signal e is outputted at the terminal 8. When the switch 1 is detouched, C1 is discharged and the signal c (B) is generated with the comparators 3 and 4, performing charge and discharge of C2.
JP52131350A 1977-10-31 1977-10-31 chime sound generator Expired JPS5939758B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52131350A JPS5939758B2 (en) 1977-10-31 1977-10-31 chime sound generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52131350A JPS5939758B2 (en) 1977-10-31 1977-10-31 chime sound generator

Publications (2)

Publication Number Publication Date
JPS5464450A true JPS5464450A (en) 1979-05-24
JPS5939758B2 JPS5939758B2 (en) 1984-09-26

Family

ID=15055869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52131350A Expired JPS5939758B2 (en) 1977-10-31 1977-10-31 chime sound generator

Country Status (1)

Country Link
JP (1) JPS5939758B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55159181A (en) * 1979-05-31 1980-12-11 Rhythm Watch Co Ltd Announcing sound generator of watch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5194737A (en) * 1975-02-18 1976-08-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5194737A (en) * 1975-02-18 1976-08-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55159181A (en) * 1979-05-31 1980-12-11 Rhythm Watch Co Ltd Announcing sound generator of watch

Also Published As

Publication number Publication date
JPS5939758B2 (en) 1984-09-26

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