JPS645520U - - Google Patents

Info

Publication number
JPS645520U
JPS645520U JP9984387U JP9984387U JPS645520U JP S645520 U JPS645520 U JP S645520U JP 9984387 U JP9984387 U JP 9984387U JP 9984387 U JP9984387 U JP 9984387U JP S645520 U JPS645520 U JP S645520U
Authority
JP
Japan
Prior art keywords
power
preamplifier
amplifier
circuit
power supply
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
JP9984387U
Other languages
Japanese (ja)
Other versions
JPH0543529Y2 (en
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 filed Critical
Priority to JP1987099843U priority Critical patent/JPH0543529Y2/ja
Publication of JPS645520U publication Critical patent/JPS645520U/ja
Application granted granted Critical
Publication of JPH0543529Y2 publication Critical patent/JPH0543529Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Amplifiers (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案回路の第１実施例の回路図、第
２図は本考案回路の動作説明用電圧波形図、第３
図は本考案回路の第２実施例の回路図、第４図は
従来回路の回路図である。 １…パワーアンプ、２…プリアンプ、３…再生
ヘツド、４…スピーカ、５，８…ミユート回路、
６…バイアス回路、７…コンパレータ、９…定電
流源、Ｃ，Ｃ１…コンデンサ、Ｒ…抵抗、Ｑ…ト
ランジスタ。 Figure 1 is a circuit diagram of the first embodiment of the circuit of the present invention, Figure 2 is a voltage waveform diagram for explaining the operation of the circuit of the present invention, and Figure 3 is a voltage waveform diagram for explaining the operation of the circuit of the present invention.
This figure is a circuit diagram of a second embodiment of the circuit of the present invention, and FIG. 4 is a circuit diagram of a conventional circuit. 1...power amplifier, 2...preamplifier, 3...playback head, 4...speaker, 5, 8...mute circuit,
6... Bias circuit, 7... Comparator, 9... Constant current source, C, C1 ... Capacitor, R... Resistor, Q... Transistor.

Claims (1)

【実用新案登録請求の範囲】 電源からリツプル除去用フイルタを介して電源
供給されるように接続されたプリアンプと、該電
源から直接電源供給されるように接続されていて
該プリアンプの出力を増幅して取出すパワーアン
プとを設けられた音響機器のアンプ回路において
、 上記電源の投入時から上記プリアンプの電源電
圧値が正常値に達する迄の間、上記パワーアンプ
を不動作状態にしておく回路を設けてなる音響機
器のアンプ回路。[Claims for Utility Model Registration] A preamplifier connected to be supplied with power from a power supply via a ripple removal filter, and a preamplifier connected to be directly supplied with power from the power supply and amplifying the output of the preamplifier. In an amplifier circuit of an audio equipment equipped with a power amplifier that is extracted from the power amplifier, a circuit is provided to keep the power amplifier in an inoperable state from when the power is turned on until the power supply voltage value of the preamplifier reaches a normal value. Amplifier circuit for audio equipment.
JP1987099843U 1987-06-29 1987-06-29 Expired - Lifetime JPH0543529Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987099843U JPH0543529Y2 (en) 1987-06-29 1987-06-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987099843U JPH0543529Y2 (en) 1987-06-29 1987-06-29

Publications (2)

Publication Number Publication Date
JPS645520U true JPS645520U (en) 1989-01-12
JPH0543529Y2 JPH0543529Y2 (en) 1993-11-02

Family

ID=31327378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987099843U Expired - Lifetime JPH0543529Y2 (en) 1987-06-29 1987-06-29

Country Status (1)

Country Link
JP (1) JPH0543529Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013110726A (en) * 2011-10-24 2013-06-06 Rohm Co Ltd Audio signal processing circuit and electronic apparatus using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158516U (en) * 1982-04-16 1983-10-22 株式会社日立製作所 Muting circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158516U (en) * 1982-04-16 1983-10-22 株式会社日立製作所 Muting circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013110726A (en) * 2011-10-24 2013-06-06 Rohm Co Ltd Audio signal processing circuit and electronic apparatus using the same

Also Published As

Publication number Publication date
JPH0543529Y2 (en) 1993-11-02

Similar Documents

Publication Publication Date Title
JPS6017066Y2 (en) tape recorder
JPS645520U (en)
JPS60126811U (en) Partial feedback shunt regulator power supply
JPS5853689Y2 (en) Tape recorder muting device
JPS634296Y2 (en)
JPS5824319Y2 (en) tape recorder
JPH0722433B2 (en) Power supply circuit for condenser microphone
JPS5810187Y2 (en) magnetic recording and reproducing device
JPS6017045Y2 (en) Tape recorder muting circuit
JPS5935912Y2 (en) ALC circuit of tape recorder with radio
JPS6267307U (en)
JPS63130959U (en)
JPS62181023U (en)
JPS63163011U (en)
JPH0461921U (en)
JPH03115950U (en)
JPS6444712U (en)
JPS6157690U (en)
JPS6349812U (en)
JPH03121559U (en)
JPH02123756U (en)
JPS6347617U (en)
JPS58158516U (en) Muting circuit
JPS62180366U (en)
JPS6178421U (en)