JPS6061821U - Power supply voltage switching circuit for power amplifier circuit - Google Patents
Power supply voltage switching circuit for power amplifier circuitInfo
- Publication number
- JPS6061821U JPS6061821U JP15418583U JP15418583U JPS6061821U JP S6061821 U JPS6061821 U JP S6061821U JP 15418583 U JP15418583 U JP 15418583U JP 15418583 U JP15418583 U JP 15418583U JP S6061821 U JPS6061821 U JP S6061821U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power
- load impedance
- output voltage
- rectifying
- 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
図は本考案の一実施例を示すブロック図である。
５・・・・・・インピーダンス検出回路、８・・・・・
・電源ミューティング回路、９・・・・・・電源トラン
ス。The figure is a block diagram showing one embodiment of the present invention. 5... Impedance detection circuit, 8...
・Power muting circuit, 9...Power transformer.
Claims (1)
に可動接点が接続され上記負荷を上記電力増幅回路の出
力端子か又は上記負荷インピーダンス測定回路の入力端
子のいずれかに接続する第１＠換スイツチと、電源投入
直後の所定時間動作して上記第一切換スイッチを上記負
荷インピーダ、 ンス測定回路側に接続して上記電力増
幅回路側を開放する電源ミューティング回路とを有する
電力増幅回路において、上記電力増幅回路に電源を供給
する電源トランスを高圧及び低圧の２次側出力電圧端子
を有するものとし、該電源トランスと整流平滑回路との
間に、上記電源トランスの各出力電圧端子のいずれかを
上記整流平滑回路に加える第二切換スイッチとを備え、
電源投入直後に得られる上記負荷インピーダンス測定回
路の出力により、上記負荷インピーダンスが所定値以上
の時に、上記電源トランスの出力電圧の高い端子と上記
整流平滑回路とを接続し、上記負荷インピーダンスが所
定値未満の時に、上記電源トランスの出力電圧の低い端
子と上記整流平滑回路とを接続する様にした事を特徴と
する電力増幅回路の電源型−圧切換回路。a power amplification circuit, a load impedance measurement circuit, and a first exchange switch having a movable contact connected to the load and connecting the load to either an output terminal of the power amplification circuit or an input terminal of the load impedance measurement circuit; and a power supply muting circuit that operates for a predetermined period of time immediately after power is turned on to connect the first changeover switch to the load impedance measurement circuit side and open the power amplifier circuit side. A power transformer that supplies power to the amplifier circuit has high-voltage and low-voltage secondary output voltage terminals, and one of the output voltage terminals of the power transformer is connected between the power transformer and the rectifying and smoothing circuit. Equipped with a second selector switch added to the rectifying and smoothing circuit,
When the load impedance is equal to or higher than a predetermined value based on the output of the load impedance measuring circuit obtained immediately after power is turned on, the high output voltage terminal of the power transformer is connected to the rectifying and smoothing circuit, and the load impedance is set to the predetermined value. 1. A power supply type-voltage switching circuit for a power amplifier circuit, characterized in that a terminal of the power transformer having a low output voltage and the rectifying and smoothing circuit are connected when the output voltage is lower than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15418583U JPS6061821U (en) | 1983-10-04 | 1983-10-04 | Power supply voltage switching circuit for power amplifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15418583U JPS6061821U (en) | 1983-10-04 | 1983-10-04 | Power supply voltage switching circuit for power amplifier circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6061821U true JPS6061821U (en) | 1985-04-30 |
Family
ID=30340907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15418583U Pending JPS6061821U (en) | 1983-10-04 | 1983-10-04 | Power supply voltage switching circuit for power amplifier circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6061821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008236542A (en) * | 2007-03-22 | 2008-10-02 | Sanyo Electric Co Ltd | Power amplifier |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819517B2 (en) * | 1976-10-13 | 1983-04-18 | 三菱重工業株式会社 | Twin-hulled barge for transporting plants |
-
1983
- 1983-10-04 JP JP15418583U patent/JPS6061821U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819517B2 (en) * | 1976-10-13 | 1983-04-18 | 三菱重工業株式会社 | Twin-hulled barge for transporting plants |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008236542A (en) * | 2007-03-22 | 2008-10-02 | Sanyo Electric Co Ltd | Power amplifier |
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