JPS5886869A - Variable direct current voltage power supply circuit - Google Patents
Variable direct current voltage power supply circuitInfo
- Publication number
- JPS5886869A JPS5886869A JP56186028A JP18602881A JPS5886869A JP S5886869 A JPS5886869 A JP S5886869A JP 56186028 A JP56186028 A JP 56186028A JP 18602881 A JP18602881 A JP 18602881A JP S5886869 A JPS5886869 A JP S5886869A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- output
- power supply
- variable
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は可変１１ｆｌｌ電圧電源回路に関し、特に複数
の電源出力を得ることを目的とするバＡ／ヌ幅変調方式
の可変直流電圧電源回路に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a variable 11fll voltage power supply circuit, and more particularly to a variable DC voltage power supply circuit using the A/N width modulation method and which aims to obtain a plurality of power supply outputs.
更に鮮鋭すると１本発明は音声出力増幅回路の如く大電
力を消費する出力増幅回路にはパルス幅変調方式の可変
１１［渣電圧電源回路から！＋！Ｉ駆動電源を供給し、
ｊＩＩ］ち、出力増幅回路へは入力信号の振幅に応答し
て［ｆＩＩＩ電圧が変化する可変０ｆｆＩｌ駆動電源電
圧を供給して出力増幅回路における消費電力の効率を高
めると共に前記パルス輻変調号式Ｏ可変直流電圧電源回
路のトランスにビ〜り整流平滑回路を接続し、パルス幅
変調方式の可変［１１電圧電源回絡においてはそのパル
ス幅は入力信号の′擾輻に応答して変化してもパ１ｖス
の高さく擾ＩＩＩ）は常に一定であることを利用して、
電圧増幅回路の如く余り電力を消費することのない増幅
回路に前記ピーク整ｇ／１回路から一定電圧の［流電源
電圧を供給する回路を提供せんとするものである。More specifically, the present invention is applicable to output amplifier circuits that consume large amounts of power, such as audio output amplifier circuits, by using a pulse width modulation type variable 11 [from the residual voltage power supply circuit! +! Supply I drive power,
jII], a variable 0ffIl driving power supply voltage whose [fIII voltage changes in response to the amplitude of the input signal is supplied to the output amplifier circuit to increase the efficiency of power consumption in the output amplifier circuit, and also to improve the efficiency of power consumption in the output amplifier circuit. A beam rectifier and smoothing circuit is connected to the transformer of the variable DC voltage power supply circuit, and a pulse width modulation type variable [11] In the voltage power supply circuit, the pulse width may change in response to the input signal's amplitude Taking advantage of the fact that the height of the path 1vs (III) is always constant,
It is an object of the present invention to provide a circuit that supplies a constant voltage current source voltage from the peak adjustment g/1 circuit to an amplifier circuit that does not consume much power, such as a voltage amplifier circuit.
次に本発明のパルス幅ｆｌｌＩ方式のスイッチングによ
る可変［ｆｆ１１ｍ１ＥＥＥ電源回絡について説明する
。Next, a variable [ff11m1EEE power supply circuit using pulse width fllI switching according to the present invention will be explained.
第１図に示す可変［ｆ！！電源回路は、パＡ／ス暢変調
部（１１０）と、バ〃ス増幅部（，１１１）と、電力ス
イッチング＠（１１２）と、トランジスタ。The variable [f! ! The power supply circuit includes a path A/pass modulation section (110), a bass amplifier section (111), a power switching unit (112), and a transistor.
整流平滑回路（１１３）とから構成されている。It is composed of a rectifying and smoothing circuit (113).
そして制御入力信号が入力端子（１）に入力されると、
比較器（４）は、三角波発生回路（３）の三角波出力と
。Then, when the control input signal is input to the input terminal (1),
The comparator (4) is connected to the triangular wave output of the triangular wave generating circuit (3).
渣回路よりなる包絡電圧発生回路（２）の出方とを比較
増幅することによプ包絡電圧発生回路（２）の出力に比
例したデユーティ比のパルス幅変調信号、坤ち前記入力
信号に応じたデユーティ比のパルス幅、変調信号を発生
する。該パルス幅変調信号はパルス°制御回路（５）に
印加され、該制御回路（５）は出力端子（６）及び（７
）Ｋそれぞれ第２図れ）および■）に示すパルスを出力
する。該出力パルスをトランジスタαＤ及び四により増
幅し、その出力信号により電力スイッチングトランジス
ＪＱＩ及びα９をスイッチング駆動する。尚、その際、
パルス制御回路（６）の出方端子（６）および（７）に
おける出力パルスは前述の如くそれぞれ第２図れ）およ
び（１））の如くなっている。即チ、ヌイッチングトラ
ンジスタ（ト）およびα９がそれぞれオフとなる期間（
Ｗｌ）および（Ｗ２）が時間的に相重なる期間がある。By comparing and amplifying the output of the envelope voltage generation circuit (2) consisting of a residue circuit, a pulse width modulation signal with a duty ratio proportional to the output of the envelope voltage generation circuit (2) is generated according to the input signal. It generates a modulated signal with a pulse width of a duty ratio. The pulse width modulated signal is applied to a pulse control circuit (5), which controls output terminals (6) and (7).
) K outputs the pulses shown in Fig. 2) and ■), respectively. The output pulse is amplified by transistors αD and 4, and the output signal drives switching power switching transistors JQI and α9. In addition, at that time,
As described above, the output pulses at the output terminals (6) and (7) of the pulse control circuit (6) are as shown in FIG. 2 (A) and (1), respectively. The period in which the switching transistor (G) and α9 are each off (
There is a period in which Wl) and (W2) overlap in time.
電力スイッチングトランジスタ（至）のコレクタは端子
（ト）を介して、またｔカトランジスタ（至）のコレク
タは端子■を介してトランス口の一次巻ｊｌｌＫ！！続
されている。又該一次巻線の中間タップには［流電源瑞
子のから一定［ＩＩｆＩｌ電圧（＋ＶＣ）が印加されて
いる。従って、第２図に示すタイミングパルスで電力ト
ランジスタ（至）及びα９が交互にオン・オフを繰り返
し、トランスｇ！３に交番磁束を発生させる。又ダイオ
ード勾及び（ハ）はそれぞれ電力トランジスタ（至）及
び（至）のオフ期間にトランス（ハ）から発生する逆方
向エネルギーを電源へ戻して磁束をリセットする働きを
する。The collector of the power switching transistor (to) is connected to the terminal (g), and the collector of the power switching transistor (to) is connected to the primary winding of the transformer mouth via the terminal (■). ! It is continued. Further, a constant IIfIl voltage (+VC) is applied to the intermediate tap of the primary winding from the current source screw. Therefore, the power transistor (to) and α9 are alternately turned on and off by the timing pulse shown in FIG. 2, and the transformer g! 3 to generate alternating magnetic flux. In addition, the diode gradients and (c) function to reset the magnetic flux by returning the reverse energy generated from the transformer (c) to the power source during the off period of the power transistors (c) and (c), respectively.
このようなトランス（ハ）の−次側動作により前記交番
磁束による交流電圧をトランス口の２次巻線より取り出
し、ダイオードプリフジ等による整ｆ１１回路＠と、フ
ィル！（至）によりパルス幅に応じた直流電圧を出力端
子−及び（至）から得ている。即ち前記制御入力信号に
より任意の直流電圧を得ることができる。尚、抵抗など
Ｋよるフィードバック回路■は負Ｗ（図示せず）の変動
に対して安定した直流電圧を出力する為の働きをする。By such downstream operation of the transformer (c), the alternating current voltage due to the alternating magnetic flux is taken out from the secondary winding of the transformer mouth, and is connected to the rectifier f11 circuit @ by the diode prefuge etc. and the fill! By (to), a DC voltage corresponding to the pulse width is obtained from the output terminals - and (to). That is, any DC voltage can be obtained by the control input signal. Note that the feedback circuit (2), which includes a resistor or the like, functions to output a stable DC voltage against fluctuations in the negative W (not shown).
本発明のバ〃ヌ幅変調方式の可変［ｆＩ！電圧電源＠Ｊ
絡は上述の如く動作する。そして車載用バッテリまたは
、乾電池等の低い厘澄電圧電源を高電圧のｌ［ｆｆ電源
に変換して１例えば電力増幅器などの出力段の駆動１澄
電源として用いる際、上述の回路動作を利用し、電力増
幅器の出力信号Ｓｅｙ圧に応じて電圧の変化する駆動［
済電源電圧を該出力段に供給し、電力効率の高い電力増
幅器を得ている。縛ち、低い電源電圧で高出力を得ると
いう様な用途に使用して、非常に高い変換効率を得てい
る。しかし前記電力増幅器に前′ｅ可変［ｆｉｉ電圧電
源回路を使用する場合、ｔＩ司変直流電圧電源回路の出
力は前記電力増幅器の出力段への供給のみである。Ｌｌ
［ｆＩｌ電源回路は、当然、電圧増幅段等に一定ｔ１［
流電圧を供給しなければならない。そのために電力増幅
器に使用する前記可変［ｉ電圧電源回路の他に電圧増幅
段用の一定［？Ｊｆ電圧電源回路を備えることはコスト
アップになるばかりでなく。The variable width modulation method of the present invention [fI! Voltage power supply @J
The link operates as described above. When converting a low clear voltage power source such as a car battery or a dry battery into a high voltage l[ff power source and using it as a drive power source for the output stage of a power amplifier, etc., the circuit operation described above is used. , a drive whose voltage changes according to the output signal Sey pressure of the power amplifier [
A high power supply voltage is supplied to the output stage, thereby obtaining a power amplifier with high power efficiency. It is used for applications such as tying up the power supply and obtaining high output with a low power supply voltage, and achieves extremely high conversion efficiency. However, when a variable voltage power supply circuit is used in the power amplifier, the output of the variable DC voltage power supply circuit is only supplied to the output stage of the power amplifier. Ll
[fIl power supply circuit naturally has a constant t1[
A current voltage must be supplied. For this purpose, in addition to the variable [i voltage power supply circuit] used in the power amplifier, there is also a constant [? Providing a Jf voltage power supply circuit not only increases cost.
形状寸法が大きくなり、前記可変［ｆｆｉ電圧電源回路
が有効に利用されないという間蘭がでてくる。As the shape and dimensions become larger, there is a problem that the variable [ffi voltage power supply circuit] cannot be used effectively.
本発明はこのａＫ艦みて、前記可変ｔｌ流電圧電源回回
路簡単な回路を付加するだけで、可変直流電圧の他に一
定ｒｉｌ流電圧が得られ、該町変直流電正電源回路の機
能を同上させて前述の間１１点を解決するものである。The present invention is based on this aK ship, and by simply adding a simple circuit to the variable TL current voltage power supply circuit, a constant ril current voltage can be obtained in addition to the variable DC voltage. This solves the 11 points mentioned above.
次にその動作について第１図と共にＩ！に詳細に説明す
る。Next, I! will be explained in detail.
第１図に於いて、制御入力信号が入力端子（１）より印
加されると、包絡電圧発生回路（２）から該制御入力信
号のピーク包絡に応じた出力電圧が発生し、比較器（４
）は三角波発生回路（３）の三角波出力と、包絡電圧発
生回路（２）の出力とを比較増幅して、前記制御入力信
号に応じたデユーティ比のパルス幅変調信号を発生する
。該バ／ｌ／ス輻変調信号はパルス制御回路（５）に入
力され、７前述の如く該制御回路（６）によりそれぞれ
端子（６）及び（ｎＫ１４２図れ順）に示す／＜ＩＶス
を出力する。該バフｖスをトランジスタ■及び（ロ）で
パルス増幅し、該増幅された信号により電力スイッチン
グトランジスタ（至）及び（至）を交互にオン・オフさ
せることにより、トランスのに交番磁束を発生させ、ダ
イオードブリッジ一ト、コンデンサ（至）及び儲とによ
って構成されるビーク整澄平滑回路（至）Ｋよって、ト
ランス（至）の２次巻線に発生するパルス波のピーク電
圧が出力端子■及びａｌｌｌＫ発生する。そして、この
パルス（Ｐｌ）（Ｐ２ ）の幅は入力信号の後幅に応じ
て変化するが、パルス（ｐｔ ） （Ｐｚ ）の波高（
振幅）Ｉ！は一定であるから、コンデンサ（至）及び（
至）の容量をパルスと次のパルスの期間に比べ充分大き
く設定することにより、出力端子−及び−から前記パル
ス波のピーク電圧値の安定し九一定［ｆｌ！電圧として
取り出すことができる。この一定［澄電圧は電圧増幅段
などの低消費電力回路に使用して好適である。In FIG. 1, when a control input signal is applied from an input terminal (1), an output voltage corresponding to the peak envelope of the control input signal is generated from an envelope voltage generation circuit (2), and a comparator (4) generates an output voltage corresponding to the peak envelope of the control input signal.
) compares and amplifies the triangular wave output of the triangular wave generating circuit (3) and the output of the envelope voltage generating circuit (2) to generate a pulse width modulated signal with a duty ratio corresponding to the control input signal. The bus/l/bus modulation signal is input to the pulse control circuit (5), and as described above, the control circuit (6) outputs the / do. The buff V is pulse-amplified by transistors (1) and (2), and the amplified signal turns on and off the power switching transistors (2) and (2) alternately to generate alternating magnetic flux in the transformer. , a diode bridge, a capacitor, and a capacitor, the peak voltage of the pulse wave generated in the secondary winding of the transformer reaches the output terminal ■ and allK occurs. The width of this pulse (Pl) (P2) changes depending on the rear width of the input signal, but the pulse height (Pz) of the pulse (pt) (Pz)
amplitude) I! Since is constant, the capacitor (to) and (
By setting the capacitance of the pulse wave (to) sufficiently large compared to the period of one pulse and the next pulse, the peak voltage value of the pulse wave from the output terminals - and - is stable and constant [fl! It can be extracted as voltage. This constant clear voltage is suitable for use in low power consumption circuits such as voltage amplification stages.
このようにして第１図の回路により簡単な回路を付加す
るだけで、可変直流電圧の他にＬ定直涜電圧が得られ、
２系統の負荷に電源電圧を供給することができる。さて
１本発明の可変直流電圧電源回路はトブンーＥ口の１次
側の回路が共通であって、トランスの２次側に於いて、
２糸絖の［？ｉ［Ｆ電圧を得る構成としており、主に可
変直流電圧が安゛定して出力できるように可変［漬電圧
出力より入力へフィードバック回路−を挿入している。In this way, by simply adding a simpler circuit to the circuit shown in Fig. 1, in addition to the variable DC voltage, the L constant DC voltage can be obtained.
Power supply voltage can be supplied to two loads. Now, in the variable DC voltage power supply circuit of the present invention, the circuit on the primary side of the Tobun-E port is common, and on the secondary side of the transformer,
2 Thread [? It is configured to obtain an i[F voltage, and a feedback circuit is inserted from the variable voltage output to the input so that the variable direct current voltage can be stably output.
しかし、例えば可変［ｇｌ電圧の設定電圧が低く、出力
端子（至）＠（支）に接続される負荷が軽い場合或いは
無負荷の場合、安定したフィードバックができない為、
パルス幅が定で−らない伏動、或いはトランス四の２次
側に発生するパルスの輪が狭く又波高値が通常の電圧レ
ベルに達しない状態と々る。従って前述の如くこの回路
は、トランスの２次ｌｌＫ発生するパルスをピーク整流
平滑−（至）儲する仁とで一定直流電圧を得るよう忙構
成しているので、前述のような状ＤＫなれば１通常の一
定［ｆ電圧が得られないという問題、即ち一定直流電圧
の出力端子ｃｎｅｌｊ−のみに負荷を接続して電源電圧
を供給することは不可能となる。かかる問題を解決する
Ｋは１例えば抵抗等のダミー負荷を可変ＩＩＩｇｌ電圧
出力端子翰翰（至）に接続し、適当な負荷電澄を澄して
おけば良いのであるが、可変直流電圧の設定電圧が高く
なった場合、ダミー負荷に流れる電澄が増大し、可変［
流電圧電源＠Ｊ路の電力変換効率が低下してしまう。そ
こで本発明においては、ダミー負荷に定電８Ｆ回路を用
いることにより、かかる問題点を解決すると共に、電力
変換効率の低下を最小限にするようにしている。１１！
３図は本発明に用いる定電流回路の一実施例を示すもの
であり、定電圧ダイオード−によって決まる電圧値と抵
抗−によってトランジスター及び抵抗−に定電流が流れ
る。従って、ダミー負荷が抵抗の場合の損失は電圧の二
乗に比例して増大するのに比べ、ダミー負荷が定電流回
路の場合の損失は電圧に比例するだけとなり、可変１［
ｆｉ電圧電源回路の電力変換効率の低下を最小限にする
ことができる。However, for example, if the set voltage of the variable [GL voltage is low and the load connected to the output terminal (to) @ (support) is light or there is no load, stable feedback cannot be achieved.
There may be fluctuations in which the pulse width is not constant, or the pulse ring generated on the secondary side of the transformer may be narrow and the peak value may not reach the normal voltage level. Therefore, as mentioned above, this circuit is configured to obtain a constant DC voltage by peak rectifying, smoothing, and converting the pulses generated by the secondary ILK of the transformer. 1. The problem is that the usual constant [f voltage cannot be obtained, that is, it is impossible to supply a power supply voltage by connecting a load only to the constant DC voltage output terminal cnelj-. The solution to this problem is to connect a dummy load such as a resistor to the variable IIIgl voltage output terminal and set the appropriate load voltage. When the voltage increases, the electrolyte flowing to the dummy load increases and the variable [
The power conversion efficiency of the current voltage power supply @J path is reduced. Therefore, in the present invention, by using a constant current 8F circuit for the dummy load, such problems are solved and the decrease in power conversion efficiency is minimized. 11!
FIG. 3 shows an embodiment of a constant current circuit used in the present invention, in which a constant current flows through a transistor and a resistor depending on a voltage value determined by a constant voltage diode and a resistor. Therefore, when the dummy load is a resistor, the loss increases in proportion to the square of the voltage, whereas when the dummy load is a constant current circuit, the loss is only proportional to the voltage, and the variable 1 [
Deterioration in power conversion efficiency of the fi voltage power supply circuit can be minimized.
このように本発明は、入力信号後幅に応じて駆動［渣電
源電圧を可変して出力電力増幅段等の電力消費効率な上
げるパルス輻変−万式のり変［ｆｆｉ電圧電源回路に簡
単なピーク整流回路と定電流回路を附加するだけで、安
定した可変直流電圧の他に安定した一定［ｆＩｔ電圧が
得られ、２系統の負荷に同時に直流電源電圧を供給する
ことができ、町ｆＬＩ［ｌ！４Ｆ電圧電源回路の機能を
向上させることができる。In this way, the present invention is capable of driving according to the width of the input signal (variing the residual power supply voltage to increase the power consumption efficiency of the output power amplification stage, etc.); By simply adding a peak rectifier circuit and a constant current circuit, a stable constant [fIt voltage] can be obtained in addition to a stable variable DC voltage, and it is possible to simultaneously supply DC power supply voltage to two loads, and the town fLI[ l! The functionality of the 4F voltage power supply circuit can be improved.
第１図は本発明の可変直流電圧電源回路の凹絡図、第２
図は同回路の説明図、第５図は本発明に使用する定電流
回路の一例である。
（１）・・・・・・入力端子、（２）・・・−・包絡電
圧発生回路、Ｃ３）・・・・・・三角波発生回路、（４
）−・・−・比較回路、 （５１−−、バμスＩＩＩＪ
ＩＩＩＫ、（社）＠・・・・・・バ／Ｉ／ヌ増輻トラン
ジスタ。
ａ８（至）−・・・・スイッチング・トフンジヌー１四
−−トランス、（財）・・・・・・整流回路、（至）−
・−フィルタ＠Ｊ％。
３ル（至）（至）・・・−・ピーク整流平滑回路、−一
初一一一定！涛回路。Figure 1 is a concave circuit diagram of the variable DC voltage power supply circuit of the present invention;
The figure is an explanatory diagram of the same circuit, and FIG. 5 is an example of a constant current circuit used in the present invention. (1) Input terminal, (2) Envelope voltage generation circuit, C3) Triangular wave generation circuit, (4
)--Comparison circuit, (51--, bus IIIJ
IIIK, Co., Ltd.@・・・・・・B/I/N booster transistor. a8 (To) - Switching function 14 - Transformer, (Foundation)... Rectifier circuit, (To) -
・-filter@J%. 3 (to) (to)...--Peak rectification and smoothing circuit, -1-1-1 constant! Wave circuit.
Claims (1)
電圧を発生させる為の包絡電圧発生回路と。 三角波を発生する三角波発生回路と、該三角波発生回路
の出力と前記包絡電圧発生回路の出力とを“比較増幅し
て前記電電信号に応じたパルス輻ｆｉｍ信号を出力する
比較回路と、Ｗｓ比Ｉ１１回路の出カバＡ／ヌが印加さ
れて互に逆極性で且つパルスのオフし、ベルが時間的に
相１つて存在する２種類のパルスを出力するパルス制御
回路と、該パルス制御回路の出力パルスに応動する２系
統のスイッチング回路と、該スイッチング回路のそれぞ
れの出力端に１次巻線の始端及び終端がそれぞれ接続さ
れ。 且つ該始端と終端とのほぼ中間となるタップには直流電
源が印側されるトランスと、該トランスの２次巻線に接
続され該２次巻１１に発生するパルスを整流平滑するピ
ーク整流平滑回路と、前記トランスの２次巻線に接続さ
れ該２次巻線に発生するパルスを整流する整ｆｌｌ［ｉ
１路と、ｌＩ整流回路の出力パルス輻に応じた［潰電圧
を発生さぜる７４にり回路と、ｌＦ７４ Ｍｌｎ路の出
力が供給される定電流回路とから構成され、前記ビータ
整流平滑回路から一定直流電圧を得ると共に前記７に１
’Ｗ夕回路から前記電電信号の援輻包絡線に応答して変
化する可変［澄電圧を得ることを特徴とする可変直流電
圧電源回路。 （！） 包絡電圧発生回路は整流回路からなる特許請
求の範囲第１項に記載の可変ｌＩ直流圧電源回路。 （３） 定電壕回路は抵抗、定電圧ダイオードおよび
トヲンジヌタから構成された特許請求の範囲第１項に記
載の可変直流電圧電源回路。[Scope of Claims] (1) An envelope voltage generation circuit for generating an envelope voltage of an electrical or electrical signal or a signal related to the signal. a triangular wave generating circuit that generates a triangular wave; a comparator circuit that compares and amplifies the output of the triangular wave generating circuit and the output of the envelope voltage generating circuit to output a pulse intensity fim signal according to the electrical signal; and a Ws ratio I11. A pulse control circuit that outputs two types of pulses having mutually opposite polarities and turning off when the circuit output cover A/N is applied, and whose bells exist in one temporal phase, and the output of the pulse control circuit. Two systems of switching circuits that respond to pulses are connected to the output ends of the switching circuits, and the start and end ends of the primary winding are respectively connected to the output ends of the primary windings.A DC power source is connected to a tap approximately halfway between the start end and the end. a peak rectifying and smoothing circuit connected to the secondary winding of the transformer for rectifying and smoothing pulses generated in the secondary winding 11; and a peak rectifying and smoothing circuit connected to the secondary winding of the transformer and the secondary winding. The rectifier fll[i
The beater rectifier smoothing circuit is composed of a 1 path, a 74 current circuit that generates a crushing voltage according to the output pulse intensity of the 1I rectifier circuit, and a constant current circuit to which the output of the 1F74 Mln path is supplied. Obtain a constant DC voltage from 7 and 1 above.
A variable direct current voltage power supply circuit characterized in that a variable DC voltage is obtained from a W evening circuit in response to the convergence envelope of the electrical signal. (!) The variable lI DC voltage power supply circuit according to claim 1, wherein the envelope voltage generation circuit comprises a rectifier circuit. (3) The variable DC voltage power supply circuit according to claim 1, wherein the constant voltage trench circuit is composed of a resistor, a constant voltage diode, and a transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56186028A JPS5886869A (en) | 1981-11-18 | 1981-11-18 | Variable direct current voltage power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56186028A JPS5886869A (en) | 1981-11-18 | 1981-11-18 | Variable direct current voltage power supply circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5886869A true JPS5886869A (en) | 1983-05-24 |
| JPH0158756B2 JPH0158756B2 (en) | 1989-12-13 |
Family
ID=16181125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56186028A Granted JPS5886869A (en) | 1981-11-18 | 1981-11-18 | Variable direct current voltage power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5886869A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61218362A (en) * | 1985-02-27 | 1986-09-27 | Fujitsu Ltd | Power source coupling system |
| JPH0660295U (en) * | 1985-08-13 | 1994-08-19 | エルサグ・インタナショナル・ビー・ヴィー | Low power and high efficiency switching power supply |
| CN106533186A (en) * | 2016-10-26 | 2017-03-22 | 武汉船舶通信研究所 | Electromagnetic detection instrument transmitter |
-
1981
- 1981-11-18 JP JP56186028A patent/JPS5886869A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61218362A (en) * | 1985-02-27 | 1986-09-27 | Fujitsu Ltd | Power source coupling system |
| JPH0660295U (en) * | 1985-08-13 | 1994-08-19 | エルサグ・インタナショナル・ビー・ヴィー | Low power and high efficiency switching power supply |
| CN106533186A (en) * | 2016-10-26 | 2017-03-22 | 武汉船舶通信研究所 | Electromagnetic detection instrument transmitter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0158756B2 (en) | 1989-12-13 |
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