JPS58506U - Power amplifier circuit for audio equipment - Google Patents
Power amplifier circuit for audio equipmentInfo
- Publication number
- JPS58506U JPS58506U JP9423681U JP9423681U JPS58506U JP S58506 U JPS58506 U JP S58506U JP 9423681 U JP9423681 U JP 9423681U JP 9423681 U JP9423681 U JP 9423681U JP S58506 U JPS58506 U JP S58506U
- Authority
- JP
- Japan
- Prior art keywords
- power
- power amplifier
- output
- supply voltage
- 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.)
- Pending
Links
Landscapes
- Amplifiers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の車載用音響機器の電力増巾回路の回路図
、第２図はこの考案の一実施例による電力増巾回路の回
路図である。
、 ３・・・・・・電力増巾器（電力増巾ＩＣ） ４・
・・・・・反転入力端子、７・・・・・・電力増巾型出
力端子、−８・・・・・・出力コンデンサ、９・・・・
・・スピーカへの出力端子、１２・・・・・・ダイオー
ド、１３・・・・・・出力電圧上昇回路（トライジスタ
）。なお図中同一符号は同−又は相当部分を示す。FIG. 1 is a circuit diagram of a conventional power amplification circuit for a vehicle-mounted audio device, and FIG. 2 is a circuit diagram of a power amplification circuit according to an embodiment of the invention. , 3...Power amplifier (power amplifier IC) 4.
...Inverting input terminal, 7...Power amplification type output terminal, -8...Output capacitor, 9...
... Output terminal to speaker, 12 ... Diode, 13 ... Output voltage increase circuit (tri-transistor). Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
□となり入力電力を増巾する電力増巾器と、この電力増
巾器の出力端子とスピーカへの出力端子との間に接続さ
れた出力コンデンサと、上記スピーカへの出力端子に電
源電圧が印加されたとき該電源電圧を上記電力増巾器の
電源入力端子に供給するダイオードと、同じく上記スピ
ーカへの出力端子に電源電圧が供給されたとき上記電力
増巾器の反転入力端子に非反転入力端子に対して負の入
力電圧を加えて該電力増巾器の出力電圧を上昇させる出
力電圧上昇回路とを備えたことを特徴とする音響機器の
電力増巾回路。A power amplifier that becomes active when a power supply voltage is applied to its power input terminal and amplifies the input power, and an output connected between the output terminal of this power amplifier and the output terminal to the speaker. A capacitor, a diode that supplies the power supply voltage to the power input terminal of the power amplifier when the power supply voltage is applied to the output terminal of the speaker, and a power supply voltage that is also supplied to the output terminal of the speaker. and an output voltage increasing circuit that increases the output voltage of the power amplifier by applying a negative input voltage to the non-inverting input terminal to the inverting input terminal of the power amplifier. Equipment power amplification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9423681U JPS58506U (en) | 1981-06-24 | 1981-06-24 | Power amplifier circuit for audio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9423681U JPS58506U (en) | 1981-06-24 | 1981-06-24 | Power amplifier circuit for audio equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58506U true JPS58506U (en) | 1983-01-05 |
Family
ID=29889171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9423681U Pending JPS58506U (en) | 1981-06-24 | 1981-06-24 | Power amplifier circuit for audio equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61500780A (en) * | 1983-11-26 | 1986-04-24 | フア−レル コ−ポレ−シヨン | Structure of extruder barrel |
-
1981
- 1981-06-24 JP JP9423681U patent/JPS58506U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61500780A (en) * | 1983-11-26 | 1986-04-24 | フア−レル コ−ポレ−シヨン | Structure of extruder barrel |
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