JPS5714210A - Muting operation device - Google Patents

Muting operation device

Info

Publication number
JPS5714210A
JPS5714210A JP8937080A JP8937080A JPS5714210A JP S5714210 A JPS5714210 A JP S5714210A JP 8937080 A JP8937080 A JP 8937080A JP 8937080 A JP8937080 A JP 8937080A JP S5714210 A JPS5714210 A JP S5714210A
Authority
JP
Japan
Prior art keywords
voltage
circuit
muting
turns
contact
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
JP8937080A
Other languages
Japanese (ja)
Other versions
JPS6332283B2 (en
Inventor
Kazuhide Miyoshi
Hironori Tanigaki
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.)
Denso Ten Ltd
Original Assignee
Denso Ten 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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP8937080A priority Critical patent/JPS5714210A/en
Publication of JPS5714210A publication Critical patent/JPS5714210A/en
Publication of JPS6332283B2 publication Critical patent/JPS6332283B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To detect and suppress a noise generated during the operation of a nonshorting switch with extremely simple constitution by operating a muting circuit by the outut of an active element which turns on through the operation of the nonshorting switch. CONSTITUTION:When a voltage +B is applied to an AM circuit via a terminal 2, a contact 4 and a terminal 1, the movement of the contact 4 intercepts the voltage supply to the AM circuit and also intercepts the supply of the voltage +B to the base of a transistor (TR) Q, which turns on; and a voltage developed at its collector is applied to a muting circuit M to intercept a sound, and at the same time, a capacitor C is charged. The further movement of the contact 4 supplies the voltage to an FM circuit and applies the voltage to the base of the TRQ again, which turns off, but the muting circuit M is applied with the discharging voltage of the capacitor C to continue its operation. When its voltage drops, the muting mode is reset.
JP8937080A 1980-06-30 1980-06-30 Muting operation device Granted JPS5714210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8937080A JPS5714210A (en) 1980-06-30 1980-06-30 Muting operation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8937080A JPS5714210A (en) 1980-06-30 1980-06-30 Muting operation device

Publications (2)

Publication Number Publication Date
JPS5714210A true JPS5714210A (en) 1982-01-25
JPS6332283B2 JPS6332283B2 (en) 1988-06-29

Family

ID=13968799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8937080A Granted JPS5714210A (en) 1980-06-30 1980-06-30 Muting operation device

Country Status (1)

Country Link
JP (1) JPS5714210A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057212U (en) * 1983-09-26 1985-04-22 シャープ株式会社 Muting circuit for audio equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4884415A (en) * 1988-09-29 1989-12-05 Maytag Corporation Heat transfer barrier for the yoder loop of a refrigerator cabinet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5475609A (en) * 1977-11-21 1979-06-16 Nat Distillers Chem Corp Catalyst atomizing nozzle
JPS5544612U (en) * 1978-09-14 1980-03-24
JPS5572316U (en) * 1978-11-10 1980-05-19

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522000A (en) * 1975-06-23 1977-01-08 Kikunosuke Ogawa Method of gathering a finger print for examination

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5475609A (en) * 1977-11-21 1979-06-16 Nat Distillers Chem Corp Catalyst atomizing nozzle
JPS5544612U (en) * 1978-09-14 1980-03-24
JPS5572316U (en) * 1978-11-10 1980-05-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057212U (en) * 1983-09-26 1985-04-22 シャープ株式会社 Muting circuit for audio equipment

Also Published As

Publication number Publication date
JPS6332283B2 (en) 1988-06-29

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