JPS6088622U - Load impedance detection circuit - Google Patents
Load impedance detection circuitInfo
- Publication number
- JPS6088622U JPS6088622U JP18060783U JP18060783U JPS6088622U JP S6088622 U JPS6088622 U JP S6088622U JP 18060783 U JP18060783 U JP 18060783U JP 18060783 U JP18060783 U JP 18060783U JP S6088622 U JPS6088622 U JP S6088622U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- load
- load impedance
- detection circuit
- impedance detection
- 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
- Measurement Of Resistance Or Impedance (AREA)
- 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図は本考案の一実施例を示す回路図、第２図は本考
案による一実施例の整流波形図、第３図は従来の回路例
を示す回路図、第４図は従来の検出電圧波形の位相図。
Ａ１・・・電力増幅器、Ａ２． Ａ３・・・電圧増幅器
、団・・・負荷、Ｄ１〜Ｄ３・・・整流器、Ｒ１へＲ１
１・・・抵抗、Ｃ１，Ｃ２・・・コンデンサー、ＣＰ・
・・電圧比較器、β・・・電源電圧、Ｉｓ・・・負荷電
流、■。
Ｖｓ、 Ｖｐ、 Ｖｄｓ、 Ｖｄｐ、 Ｖｃ−−−各ポ
イントの電圧。Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a rectification waveform diagram of an embodiment of the invention, Fig. 3 is a circuit diagram showing a conventional circuit example, and Fig. 4 is a conventional detection method. Phase diagram of voltage waveform. A1...power amplifier, A2. A3...voltage amplifier, group...load, D1-D3...rectifier, R1 to R1
1...Resistor, C1, C2...Capacitor, CP・
...Voltage comparator, β...Power supply voltage, Is...Load current, ■. Vs, Vp, Vds, Vdp, Vc---Voltage at each point.
Claims (1)
電圧に置換えて検出し、この検出電圧を整流した直流電
圧Ｖｄｓを一定のバイアス電圧Ｖｃをかけた電圧比較器
に入力する第１の回路と、上記負荷にかかる負荷電圧を
分圧検出し、この検出電圧を整流した直流電圧Ｖｄｐを
上記電圧比較器の別の入力端子に入力する第２の回路か
らなり、上記電圧比較器にかけられたバイアス電圧Ｖｃ
、入力電圧Ｖｄ５ｉびＶｄｐから負荷インピーダンスを
設定値と比較することを特徴とする負荷インピーダンス
検出回路。A first circuit detects a load current flowing through a load connected to a power amplifier output stage by replacing it with a voltage, and inputs a DC voltage Vds obtained by rectifying this detected voltage to a voltage comparator to which a constant bias voltage Vc is applied. , a second circuit that divides the load voltage applied to the load and inputs a DC voltage Vdp obtained by rectifying the detected voltage to another input terminal of the voltage comparator, and a bias applied to the voltage comparator. Voltage Vc
, a load impedance detection circuit that compares a load impedance with a set value from input voltages Vd5i and Vdp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18060783U JPS6088622U (en) | 1983-11-22 | 1983-11-22 | Load impedance detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18060783U JPS6088622U (en) | 1983-11-22 | 1983-11-22 | Load impedance detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6088622U true JPS6088622U (en) | 1985-06-18 |
Family
ID=30391564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18060783U Pending JPS6088622U (en) | 1983-11-22 | 1983-11-22 | Load impedance detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6088622U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4932140A (en) * | 1972-07-27 | 1974-03-23 | ||
| JPS50118647A (en) * | 1974-02-28 | 1975-09-17 |
-
1983
- 1983-11-22 JP JP18060783U patent/JPS6088622U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4932140A (en) * | 1972-07-27 | 1974-03-23 | ||
| JPS50118647A (en) * | 1974-02-28 | 1975-09-17 |
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