JPH0312532U - - Google Patents

Info

Publication number
JPH0312532U
JPH0312532U JP7228489U JP7228489U JPH0312532U JP H0312532 U JPH0312532 U JP H0312532U JP 7228489 U JP7228489 U JP 7228489U JP 7228489 U JP7228489 U JP 7228489U JP H0312532 U JPH0312532 U JP H0312532U
Authority
JP
Japan
Prior art keywords
circuit
temperature detection
push
amplifier circuit
pull amplifier
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
JP7228489U
Other languages
English (en)
Other versions
JPH0644173Y2 (ja
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 JP7228489U priority Critical patent/JPH0644173Y2/ja
Publication of JPH0312532U publication Critical patent/JPH0312532U/ja
Application granted granted Critical
Publication of JPH0644173Y2 publication Critical patent/JPH0644173Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Amplifiers (AREA)
  • Protection Of Static Devices (AREA)

Description

【図面の簡単な説明】
第１図は本考案の電力増幅回路を示す回路図、
第２図は従来回路を示す回路図である。 １…Ｂ級プツシユプル増幅回路、１０…温度検
出トランジスタ、１３…駆動トランジスタ、１５
…カレントミラー回路、１６，１７，２４…トラ
ンジスタ。

Claims (1)

  1. 【実用新案登録請求の範囲】 正負二電源で動作するプツシユプル増幅回路と
    、該プツシユプル増幅回路にバイアス電流を供給
    するバイアス供給回路と、前記プツシユプル増幅
    回路を構成する出力トランジスタが過熱状態にな
    つたことを検出する温度検出回路とを備え、過熱
    状態で前記出力トランジスタが熱で破壊されるの
    を防止する電力増幅回路において、 前記温度検出回路が所定温度になつたことを検
    知した時に発生する温度検知信号に応じて前記バ
    イアス供給回路をオフさせる手段と、 前記温度検知信号に応じて前記プツシユプル増
    幅回路の駆動トランジスタをオフさせる手段と、 前記正負二電源が異常状態の時に発生する電源
    検知信号に応じて前記バイアス供給回路及び前記
    駆動トランジスタをオフさせる手段と、 を備えたことを特徴とする電力増幅回路。
JP7228489U 1989-06-20 1989-06-20 電力増幅回路 Expired - Lifetime JPH0644173Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7228489U JPH0644173Y2 (ja) 1989-06-20 1989-06-20 電力増幅回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7228489U JPH0644173Y2 (ja) 1989-06-20 1989-06-20 電力増幅回路

Publications (2)

Publication Number Publication Date
JPH0312532U true JPH0312532U (ja) 1991-02-07
JPH0644173Y2 JPH0644173Y2 (ja) 1994-11-14

Family

ID=31610088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7228489U Expired - Lifetime JPH0644173Y2 (ja) 1989-06-20 1989-06-20 電力増幅回路

Country Status (1)

Country Link
JP (1) JPH0644173Y2 (ja)

Also Published As

Publication number Publication date
JPH0644173Y2 (ja) 1994-11-14

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term