JPS60249408A - Power supply device - Google Patents
Power supply deviceInfo
- Publication number
- JPS60249408A JPS60249408A JP59105833A JP10583384A JPS60249408A JP S60249408 A JPS60249408 A JP S60249408A JP 59105833 A JP59105833 A JP 59105833A JP 10583384 A JP10583384 A JP 10583384A JP S60249408 A JPS60249408 A JP S60249408A
- Authority
- JP
- Japan
- Prior art keywords
- current
- amplifier
- load
- power supply
- variable resistance
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Amplification And Gain Control (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、負荷に供給される電源の無効な消費電流を極
力少なくすることができる電源供給装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION FIELD OF THE INVENTION The present invention relates to a power supply device that can minimize the ineffective current consumption of a power supply supplied to a load.
従来例の構成とその問題点
一般に、負荷に供給される電源が小容量の電池である場
合、その負荷での消費電流を極力減少させることが必要
である。Conventional configurations and their problems In general, when the power supply supplied to a load is a small capacity battery, it is necessary to reduce the current consumption in the load as much as possible.
第１図妃従来の電源供給装置を示す。第１図において、
１はＰＮＰ トランジスタで、コレクタが負荷３に接続
され、エミッタは電源２に接続されている。そして、ベ
ースは抵抗４を介してスイッチ５の可動片に接続されて
いるスイッチ６の一方の固定片ａは電源２に、仙、方の
固定片すはアースに接続している。今、スイッチ５の可
動片％に接続されている時、ＰＮＰ トランジスタ１は
カットオフになり、負荷３へ電源供給されない。次にス
イッチ５の可動片が固定片す側に接続された時、ＰＮＰ
）ランジスタ１はオンとなり、抵抗４の抵抗値をＲ，
ベースエノタ電圧をｖＢＥ電源２の電圧をＶｃｃ、 Ｐ
Ｎ Ｐ ）ランジスタ１の電流増幅率をｈＦＥ とす
れば、約
の電流が負荷３に流れる。ここで、■ＢＥ は約０．７
■と一定であるから、負荷３には最大上記値以上は流れ
得ないし、負荷３か上記値以下の電流しか必要としない
場合、残りはベース電流となり、無効電流となる。FIG. 1 shows a conventional power supply device. In Figure 1,
1 is a PNP transistor whose collector is connected to a load 3 and whose emitter is connected to a power supply 2. The base of the switch 6 is connected to the movable piece of the switch 5 via the resistor 4, and one fixed piece a of the switch 6 is connected to the power source 2, and the other fixed piece is connected to the ground. Now, when connected to the movable half of the switch 5, the PNP transistor 1 is cut off and no power is supplied to the load 3. Next, when the movable piece of switch 5 is connected to the fixed piece side, the PNP
) The transistor 1 turns on, and the resistance value of the resistor 4 becomes R,
The base voltage is vBE, the voltage of power supply 2 is Vcc, P
N P ) If the current amplification factor of the transistor 1 is hFE, then a current of about 100% flows through the load 3. Here, ■BE is approximately 0.7
(2) is constant, so no current exceeding the maximum above-mentioned value can flow through the load 3, and if the load 3 only requires a current below the above-mentioned value, the remainder becomes the base current and becomes a reactive current.
ところで、負荷３が電力増幅器の様にその増幅出力に応
じて消費電流が変る場合、従来の電源供給装置では、最
大出力を多く取るために先述した電流を大きく設定しな
ければならず、逆に入力信号が小さく増幅器出力を小さ
くしぼった場合に先述の様に無効電流として流れてしま
う不都合が生じるという欠点を有していた。By the way, in the case where the load 3 is a power amplifier whose current consumption changes depending on its amplified output, in a conventional power supply device, the aforementioned current must be set large in order to obtain a large maximum output, and vice versa. This has the disadvantage that when the input signal is small and the output of the amplifier is reduced to a small value, the inconvenience that occurs as a reactive current flows as described above.
発明の目的
本発明の目的は、負荷に供給される最大供給電流が無効
電流とならないように構成した電源供給装置を提供する
ことにある。OBJECTS OF THE INVENTION An object of the present invention is to provide a power supply device configured so that the maximum supply current supplied to a load does not become a reactive current.
発明の構成
本発明の電源供給装置は、負荷に加えられる入力の大き
さに応じて上記負荷に供給される最大供給電流を変化さ
せるように構成したことを特長とするものである。Configuration of the Invention The power supply device of the present invention is characterized in that it is configured to change the maximum supply current supplied to the load in accordance with the magnitude of the input applied to the load.
実施例の説明
第２図は本発明の電源供給装置の一実施例を示しており
、第２図において、トランジスタ１のコレクタは負荷で
ある増幅器１ｏの電源供給端子に接続されている。エミ
ッタは電源２に接続されている。スイッチ６の一方の固
定片ａは電源２に、他方の固定片すはアースに接続され
ている。トランジスタ１のベースｉｊ第１の可変抵抗器
６の一方の固定端子に接続され、この第１の可変抵抗器
６の他方の固定端子と摺動端子は抵抗４を介してスイッ
チ５の可動片に接続されている。さらに、第２の可変抵
抗器９は増幅器１０への入力信号８のレベルを可変する
ためのものであり、一方固定端子は入力信号８に、他方
の固定端子はアースに接続され、摺動端子は増幅器１０
０入力端子に接続されている。１１はスピーカであり、
増幅器１０の出力に接続されている。可変抵抗器らと９
は互に連動して動き、可変抵抗器９に増幅器１０への入
力信号が犬となる様に摺動子を動かした時、可変抵抗器
６の両固定端子間の抵抗値は小となる様に連動して摺動
子が動く様になっている。DESCRIPTION OF THE EMBODIMENTS FIG. 2 shows an embodiment of the power supply device of the present invention. In FIG. 2, the collector of the transistor 1 is connected to the power supply terminal of the amplifier 1o, which is a load. The emitter is connected to power supply 2. One fixed piece a of the switch 6 is connected to the power source 2, and the other fixed piece a is connected to ground. The base of the transistor 1 is connected to one fixed terminal of the first variable resistor 6, and the other fixed terminal and sliding terminal of the first variable resistor 6 are connected to the movable piece of the switch 5 via the resistor 4. It is connected. Further, the second variable resistor 9 is for varying the level of the input signal 8 to the amplifier 10, one fixed terminal is connected to the input signal 8, the other fixed terminal is connected to ground, and a sliding terminal is connected to the input signal 8. is amplifier 10
Connected to the 0 input terminal. 11 is a speaker;
It is connected to the output of amplifier 10. Variable resistor etc. 9
move in conjunction with each other, and when the slider is moved so that the input signal to the amplifier 10 becomes a signal to the variable resistor 9, the resistance value between both fixed terminals of the variable resistor 6 becomes small. The slider moves in conjunction with the
今、スイッチ６の可動片を固定片すに接続した時、トラ
ンジスタ１はオンとなり、電流を負荷である増幅器１０
に供給するわけであるが、この電流は可変抵抗器６の位
置、即ち可変抵抗器９の位置、即ち増幅器１０の入力に
応じて変化可能である。可変抵抗器６と９のそれぞれの
両固定端子間の全抵抗値や摺動子と固定端子間の変化量
対抵抗変化値のカーブを適当に選ぶ事により、増幅器１
０側の必要電流値に極力近い制御電流を流せる事が可能
となり、無効電流を減少させる事が可能である。Now, when the movable piece of the switch 6 is connected to the fixed piece, the transistor 1 is turned on, and the current is transferred to the load amplifier 10.
This current can be changed depending on the position of the variable resistor 6, that is, the position of the variable resistor 9, or the input of the amplifier 10. The amplifier 1
It is possible to flow a control current as close as possible to the required current value on the 0 side, and it is possible to reduce reactive current.
なお、スイッチ５に相当するものとして、第３図に示し
た様にベースに制御電圧を印加するトランジスタスイッ
チ１２が実用的である。Note that, as a device corresponding to the switch 5, a transistor switch 12 that applies a control voltage to its base as shown in FIG. 3 is practical.
発明の効果
以上のように本発明によれば、負荷に供給される最大供
給電流を、その負荷に加えられる入力の大きさに応じて
変化させるように構成したのて、負荷での消費電流に応
じた電流供給を行なうことができ、無効電流を著しく減
少させることができる利点を有する。Effects of the Invention As described above, according to the present invention, the maximum supply current supplied to the load is changed according to the magnitude of the input applied to the load, so that the current consumption in the load can be reduced. This has the advantage of being able to supply current accordingly and significantly reducing reactive current.
第１図は従来の電源供給装置の回路図、第２図は本発明
の電源供給装置の一実施例を示す回路図、第３図は同装
置の他の実施例を示す回路図である。
１．１２・・・・・・トランジスタ、２・・・・・電源
、３・・・・・負荷、４，１３・・・・・・抵抗、５・
・・・・スイッチ、６゜９・・・・・可変抵抗器、１ｏ
・・・・・増幅器、１１・・川・スピーカ。FIG. 1 is a circuit diagram of a conventional power supply device, FIG. 2 is a circuit diagram showing one embodiment of the power supply device of the present invention, and FIG. 3 is a circuit diagram showing another embodiment of the same device. 1.12...Transistor, 2...Power supply, 3...Load, 4,13...Resistor, 5...
...Switch, 6゜9...Variable resistor, 1o
...Amplifier, 11...River speaker.
Claims (1)
される最大電流を変化させるように構成したことを特徴
とする電源供給装置。A power supply device characterized in that the power supply device is configured to change the maximum current supplied to the load according to the magnitude of the input applied to the load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59105833A JPS60249408A (en) | 1984-05-25 | 1984-05-25 | Power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59105833A JPS60249408A (en) | 1984-05-25 | 1984-05-25 | Power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60249408A true JPS60249408A (en) | 1985-12-10 |
Family
ID=14418040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59105833A Pending JPS60249408A (en) | 1984-05-25 | 1984-05-25 | Power supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60249408A (en) |
-
1984
- 1984-05-25 JP JP59105833A patent/JPS60249408A/en active Pending
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