JPH08242124A - Low power consumption-type amplifier - Google Patents
Low power consumption-type amplifierInfo
- Publication number
- JPH08242124A JPH08242124A JP7041966A JP4196695A JPH08242124A JP H08242124 A JPH08242124 A JP H08242124A JP 7041966 A JP7041966 A JP 7041966A JP 4196695 A JP4196695 A JP 4196695A JP H08242124 A JPH08242124 A JP H08242124A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- signal
- input signal
- detected
- power
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Amplification And Gain Control (AREA)
- Amplifiers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は入力信号を増幅出力する
増幅器、特に低消費電力型増幅器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an amplifier for amplifying and outputting an input signal, and more particularly to a low power consumption type amplifier.
【０００２】[0002]
【従来の技術】増幅器の消費電力は、基本的に使用する
デバイスのＡ級、ＡＢ級、Ｃ級等の方式で効率が決定さ
れてしまい、増幅器の方式、回路の最適化等を行なって
も抵消費電力化には限界がある。2. Description of the Related Art The power consumption of an amplifier is basically determined by the class A, class AB, class C, etc. of the device used, and even if the amplifier system and circuit are optimized. There is a limit to low power consumption.
【０００３】また、従来より利用されている送信入／切
信号により、電源またはデバイスを入／切して低消費電
力化する方式でもあるが、この場合は制御信号ラインを
必要とする。Further, there is also a method of reducing power consumption by turning on / off a power supply or a device by a transmission on / off signal which has been conventionally used, but in this case, a control signal line is required.
【０００４】[0004]
【発明が解決しようとする課題】このように、従来技術
では、増幅器の方式、回路の最適化等によって低消費電
力化に限界であり、また、送信入／切信号を利用する方
式では、それ用の制御信号ラインが必要で、遠隔地等で
使用する場合は、これが制約条件となる欠点がある。As described above, in the prior art, there is a limit to the reduction of power consumption due to the amplifier system, the optimization of the circuit, and the like, and in the system using the transmission input / off signal, A control signal line for use is required, and when used in a remote place, this is a constraint.
【０００５】本発明の目的は、前記従来技術の限界を、
別の観点から解決し、増幅器の低消費電力化を実現する
ことにある。The object of the present invention is to overcome the above-mentioned limitations of the prior art.
It is to solve the problem from another point of view, and to realize low power consumption of the amplifier.
【０００６】[0006]
【課題を解決するための手段】上記の目的は、入力信号
を監視して入力信号が無いことが検出されたとき増幅器
の電源またはバイアスの遮断信号を出力する監視回路を
設けたことによって達成される。The above object is achieved by providing a monitoring circuit which monitors an input signal and outputs a power-off signal or a bias cutoff signal for an amplifier when the absence of the input signal is detected. It
【０００７】[0007]
【作用】上記手段によると、監視回路で、増幅器で増幅
する入力信号の有無を検出し、入力信号の無いことが検
出されたとき、監視回路から増幅器の電源またはバイア
スの遮断信号を出力し、増幅器は遮断信号によって電源
またはデバイスの遮断をして電力の低消費化の制御を行
なう。According to the above means, the monitoring circuit detects the presence or absence of the input signal to be amplified by the amplifier, and when the absence of the input signal is detected, the monitoring circuit outputs the power supply or bias cutoff signal of the amplifier. The amplifier cuts off the power supply or the device by the cutoff signal and controls the reduction of power consumption.
【０００８】[0008]
【実施例】以下本発明を実施例によって説明する。EXAMPLES The present invention will be described below with reference to examples.
【０００９】図１は、本発明の一実施例増幅器回路を示
し、増幅器１の入力側に方向性結合器２を備え、この方
向性結合器２を介して入力信号を増幅器１に入力し、所
要の増幅出力を出力回路に出力する。一方、方向性結合
器２からは他に信号を検出し、検波器３で検波して直流
電圧に変換し、その検出直流電圧を直流増幅器の比較器
４に入力し基準電圧と比較する。比較結果、検出電圧が
基準電圧より大きい場合は、増幅器１の電源またはバイ
アス電源のＯＮ信号、検出電圧が基準電圧を下まわった
場合は、増幅器１の電源ＯＦＦとする入／切信号５を出
力し、増幅器１に信号を加えて電源の入／切を行なう。FIG. 1 shows an amplifier circuit according to an embodiment of the present invention, in which a directional coupler 2 is provided on the input side of the amplifier 1, and an input signal is input to the amplifier 1 via the directional coupler 2. It outputs the required amplified output to the output circuit. On the other hand, another signal is detected from the directional coupler 2, detected by the detector 3 and converted into a DC voltage, and the detected DC voltage is input to the comparator 4 of the DC amplifier and compared with the reference voltage. As a result of comparison, if the detected voltage is higher than the reference voltage, the ON signal of the power supply of the amplifier 1 or the bias power supply is output, and if the detected voltage is lower than the reference voltage, the ON / OFF signal 5 for turning off the power of the amplifier 1 is output. Then, a signal is applied to the amplifier 1 to turn on / off the power.
【００１０】比較器４に設定する基準電圧は、増幅器回
路に所要以上の入力信号が有るか無いかを判定する基準
であり、この基準電圧の設定により所要入力信号の有無
が正確に判定できる。この判定により増幅器回路へ所定
の入力信号が入った場合のみ増幅器１へ電源を供給し、
入力信号が無い場合には電源供給を停止して、非動作時
の消費電力を低減させることができる。The reference voltage set in the comparator 4 is a reference for determining whether or not the amplifier circuit has an input signal more than required, and the presence or absence of the required input signal can be accurately determined by setting this reference voltage. By this judgment, power is supplied to the amplifier 1 only when a predetermined input signal is input to the amplifier circuit,
When there is no input signal, power supply can be stopped to reduce power consumption during non-operation.
【００１１】図２は、本発明の他の実施例増幅器回路を
示し、入力信号に対する出力信号の立上りの時間的な遅
れが問題となる場合、入力信号有／無の判定を行なう信
号の流れＡの時間的な遅れを補償できるような遅延線６
を方向性結合器２と増幅器１の間に挿入し、これにより
入力信号の立上りを改善したものである。FIG. 2 shows an amplifier circuit according to another embodiment of the present invention. When the time delay of the rising edge of the output signal with respect to the input signal poses a problem, the signal flow A for determining whether the input signal is present or absent is shown. Delay line 6 that can compensate for the time delay of
Is inserted between the directional coupler 2 and the amplifier 1 to improve the rising edge of the input signal.
【００１２】遅延線６は信号の流れＡの時間的な遅れに
対応して方向性結合器２から増幅器１に至る入力信号を
遅延させることによって、増幅器１の電源入／切信号５
による電源の入／切と、増幅器１への信号入力とが同期
的に行なわれ、増幅器１の入力信号の立上りが改善でき
る。The delay line 6 delays the input signal from the directional coupler 2 to the amplifier 1 in response to the time delay of the signal flow A, so that the power-on / off signal 5 of the amplifier 1 is delayed.
The ON / OFF of the power source and the signal input to the amplifier 1 are synchronously performed, and the rise of the input signal of the amplifier 1 can be improved.
【００１３】[0013]
【発明の効果】以上の本発明を実施すことにより、増幅
器の非動作時の消費電力を低減し、また、これによりト
ータルで見たときの消費電力が低減され、経済性を向上
させることができる。また、送信入／切信号を必要とし
ないので、遠隔地等でも使用が制約されない効果があ
る。By implementing the present invention as described above, the power consumption of the amplifier when it is not operating can be reduced, and the total power consumption can be reduced to improve the economical efficiency. it can. Further, since the transmission input / off signal is not required, there is an effect that the use is not restricted even in a remote place.
【図１】本発明の一実施例構成図である。FIG. 1 is a configuration diagram of an embodiment of the present invention.
【図２】本発明の他の実施例構成図である。FIG. 2 is a configuration diagram of another embodiment of the present invention.
１…増幅器、２…方向性結合器、３…検波器、４…比較
器、５…電源入／切信号、６…遅延線。1 ... Amplifier, 2 ... Directional coupler, 3 ... Detector, 4 ... Comparator, 5 ... Power on / off signal, 6 ... Delay line.
Claims (3)
幅器において、前記入力信号を監視して入力信号が無い
ことが検出されたとき前記増幅器の電源またはバイアス
の遮断信号を出力する監視回路を設けたことを特徴とす
る低消費電力型増幅器。1. An amplifier which amplifies an input signal to a required value and outputs the same, and a monitoring circuit which monitors the input signal and outputs a power supply or bias cutoff signal of the amplifier when it is detected that there is no input signal. A low power consumption type amplifier characterized by being provided.
して検出し、該検出電圧が比較器により基準電圧以下に
なったことが判定されたとき前記増幅器の電源またはバ
イアスの遮断信号を出力する監視回路を設けたことを特
徴とする請求項１記載の低消費電力型増幅器。2. An input signal is detected via a directional coupler and a detector, and when the detected voltage is judged by a comparator to fall below a reference voltage, a power supply or bias cutoff signal for the amplifier is output. The low power consumption amplifier according to claim 1, further comprising a monitoring circuit for outputting.
幅器において、前記入力信号を監視して入力信号が無い
ことが検出されたとき前記増幅器の電源またはバイアス
の遮断信号を出力する監視回路を設け、該監視回路の信
号の遅れを補償する遅延線を前記増幅器の信号入力側に
挿入したことを特徴とする低消費電力型増幅器。3. An amplifier that amplifies an input signal to a required value and outputs the monitored signal, the monitoring circuit outputting the power supply or bias cutoff signal of the amplifier when the input signal is detected and no input signal is detected. And a delay line for compensating for the delay of the signal of the monitoring circuit is inserted at the signal input side of the amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7041966A JPH08242124A (en) | 1995-03-01 | 1995-03-01 | Low power consumption-type amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7041966A JPH08242124A (en) | 1995-03-01 | 1995-03-01 | Low power consumption-type amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08242124A true JPH08242124A (en) | 1996-09-17 |
Family
ID=12622937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7041966A Pending JPH08242124A (en) | 1995-03-01 | 1995-03-01 | Low power consumption-type amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08242124A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011002099A1 (en) * | 2009-07-03 | 2011-01-06 | 日本電気株式会社 | Power consumption control circuit, amplifying circuit, and power consumption control method |
| EP2346164A2 (en) | 2010-01-14 | 2011-07-20 | Onkyo Corporation | Amplification apparatus |
| ITMI20110985A1 (en) * | 2011-05-31 | 2012-12-01 | St Microelectronics Srl | AUDIO AMPLIFIER CIRCUIT AND ITS OPERATING METHOD. |
-
1995
- 1995-03-01 JP JP7041966A patent/JPH08242124A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011002099A1 (en) * | 2009-07-03 | 2011-01-06 | 日本電気株式会社 | Power consumption control circuit, amplifying circuit, and power consumption control method |
| JPWO2011002099A1 (en) * | 2009-07-03 | 2012-12-13 | 日本電気株式会社 | Power consumption control circuit, amplifier circuit, and power consumption control method |
| US8629717B2 (en) | 2009-07-03 | 2014-01-14 | Nec Corporation | Power consumption control circuit, amplifier circuit and power consumption control method |
| EP2346164A2 (en) | 2010-01-14 | 2011-07-20 | Onkyo Corporation | Amplification apparatus |
| EP2346164A3 (en) * | 2010-01-14 | 2011-11-23 | Onkyo Corporation | Amplification apparatus |
| US8553908B2 (en) | 2010-01-14 | 2013-10-08 | Onkyo Corporation | Amplification apparatus |
| ITMI20110985A1 (en) * | 2011-05-31 | 2012-12-01 | St Microelectronics Srl | AUDIO AMPLIFIER CIRCUIT AND ITS OPERATING METHOD. |
| EP2530831A1 (en) * | 2011-05-31 | 2012-12-05 | STMicroelectronics S.r.l. | Audio amplifier circuit and method of operation thereof |
| US9008322B2 (en) | 2011-05-31 | 2015-04-14 | Stmicroelectronics S.R.L. | Efficiency optimizer of an audio power amplifier for car radio |
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