JP2886845B2 - Output voltage compensation circuit - Google Patents

Output voltage compensation circuit

Info

Publication number
JP2886845B2
JP2886845B2 JP9122281A JP12228197A JP2886845B2 JP 2886845 B2 JP2886845 B2 JP 2886845B2 JP 9122281 A JP9122281 A JP 9122281A JP 12228197 A JP12228197 A JP 12228197A JP 2886845 B2 JP2886845 B2 JP 2886845B2
Authority
JP
Japan
Prior art keywords
voltage
output
output voltage
resistors
terminal
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.)
Expired - Lifetime
Application number
JP9122281A
Other languages
Japanese (ja)
Other versions
JPH1070884A (en
Inventor
ビュン−ジョ ジョン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ERU JII DENSHI KK
Original Assignee
ERU JII DENSHI KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ERU JII DENSHI KK filed Critical ERU JII DENSHI KK
Publication of JPH1070884A publication Critical patent/JPH1070884A/en
Application granted granted Critical
Publication of JP2886845B2 publication Critical patent/JP2886845B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/461—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using an operational amplifier as final control device
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0045—Converters combining the concepts of switch-mode regulation and linear regulation, e.g. linear pre-regulator to switching converter, linear and switching converter in parallel, same converter or same transistor operating either in linear or switching mode

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Amplifiers (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は出力電圧補償回路に
係るもので、詳しくは、常用電源ＡＣを補償し安定した
出力電圧を出力するため、出力端に連結された負荷が必
要とする安定した出力電圧を発生し得る出力電圧補償回
路に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an output voltage compensating circuit, and more particularly, to a stable voltage required by a load connected to an output terminal for compensating a commercial power supply AC and outputting a stable output voltage. The present invention relates to an output voltage compensation circuit that can generate an output voltage.

【０００２】[0002]

【従来の技術】従来出力電圧補償回路においては、図３
に示したように、常用電源電圧ＶAC（１１０Ｖ、又は２
２０Ｖ）を全波整流して出力するブリッジダイオードＢ
Ｄの入力部１０と、全波整流された電圧を通過させるダ
イオードＤ１と該ダイオードＤ１を通過した電圧Ｖｉｎ
DCを平滑して出力するコンデンサーＣ１とを備えた平滑
部２０と、４個の抵抗Ｒ１，Ｒ２，Ｒ３，Ｒ４とコンデ
ンサーＣ２とを備え上記平滑部２０からの出力電圧Ｖｉ
ｎDCを分圧する電圧分配部３０と、該電圧分配部３０か
らの出力電圧Ｖｉｎｐｕｔを所定基準電圧Ｖｒｅｆに対
し負帰還増幅する比較部４０と、から構成されていた。2. Description of the Related Art In a conventional output voltage compensating circuit, FIG.
As shown in, commercial power voltage V AC (110V, or 2
20V) full-wave rectified and output bridge diode B
D input section 10, a diode D1 for passing a full-wave rectified voltage, and a voltage Vin for passing through the diode D1.
A smoothing unit 20 including a capacitor C1 for smoothing and outputting DC, and an output voltage Vi from the smoothing unit 20 including four resistors R1, R2, R3, R4 and a capacitor C2.
The voltage divider 30 divides n DC , and the comparator 40 negatively amplifies the output voltage Vinput from the voltage divider 30 with respect to a predetermined reference voltage Vref.

【０００３】且つ、上記比較部４０は、電源電圧Ｖｃｃ
を分圧し基準電圧Ｖｒｅｆを形成する２個の抵抗Ｒ５，
Ｒ６と、該基準電圧Ｖｒｅｆが非反転端子（＋）に入力
され上記電圧分配部３０の出力が反転端子（−）に入力
され、出力端は外部に連結された演算増幅器（Operatio
nal Amplifier ）ＯＰと、該演算増幅器ＯＰの出力端と
反転端子（−）間に接続された抵抗Ｒ７と、から構成さ
れていた。[0003] The comparing section 40 is provided with a power supply voltage Vcc.
Are divided into two resistors R5 and R5 for forming a reference voltage Vref.
R6 and the reference voltage Vref are input to a non-inverting terminal (+), an output of the voltage distribution unit 30 is input to an inverting terminal (-), and an output terminal is connected to an externally connected operational amplifier (Operatio).
nal Amplifier) OP, and a resistor R7 connected between the output terminal of the operational amplifier OP and the inverting terminal (-).

【０００４】このように構成された従来出力電圧補償回
路の動作に対し図４（Ａ）〜（Ｄ）を用いて説明すると
次のようであった。先ず、図４（Ａ）に示したように、
常用電源電圧ＶACが入力部１０のブリッジダイオードＢ
Ｄより全波整流され、該全波整流された電圧は平滑部２
０のダイオードＤ１を経てコンデンサーＣ１の充電及び
放電の繰返作用により所定大きさの直流電圧ＶｉｎDCに
なるが、その波形は図４（Ｂ）に示したようである。The operation of the conventional output voltage compensating circuit configured as described above will be described below with reference to FIGS. First, as shown in FIG.
The regular power supply voltage VAC is the bridge diode B of the input unit 10.
D, and the full-wave rectified voltage is applied to the smoothing unit 2
The DC voltage Vin DC of a predetermined magnitude is obtained by the repetitive action of charging and discharging of the capacitor C1 via the diode D1 of 0, and its waveform is as shown in FIG. 4 (B).

【０００５】次いで、電圧分配部３０の４個の抵抗（Ｒ
１，Ｒ２，Ｒ３，Ｒ４）に印加して該直流電圧ＶｉｎDC
が分圧され、該分圧された電圧Ｖｉｎｐｕｔはコンデン
サーＣ２でリップル（ripple）が除去される。次いで、
該分圧された電圧Ｖｉｎｐｕｔは比較部４０の演算増幅
器ＯＰの反転端子（−）に入力され、電源電圧Ｖｃｃは
２個の抵抗Ｒ５，Ｒ６により分圧され基準電圧Ｖｒｅｆ
となって、該基準電圧Ｖｒｅｆは上記演算増幅器ＯＰの
非反転端子（＋）に入力される。Next, the four resistors (R
1, R2, R3, R4) to apply the DC voltage Vin DC
Is divided, and a ripple is removed from the divided voltage Vinput by the capacitor C2. Then
The divided voltage Vinput is input to the inverting terminal (-) of the operational amplifier OP of the comparison unit 40, and the power supply voltage Vcc is divided by the two resistors R5 and R6 and the reference voltage Vref.
Then, the reference voltage Vref is input to the non-inverting terminal (+) of the operational amplifier OP.

【０００６】次いで、該演算増幅器ＯＰの反転端子
（−）に入力した電圧Ｖｉｎｐｕｔは抵抗Ｒ７により負
帰還増幅されて出力され、該出力された電圧Ｖｏｕｔｐ
ｕｔは外部の負荷に印加して負荷の入力電源として使用
される。一方、常用電源電圧ＶACの大きさが変化すると
上記電圧Ｖｉｎｐｕｔの大きさも変化するが、若し、図
２（Ｃ）に示したように、上記電圧Ｖｉｎｐｕｔの大き
さが基準電圧Ｖｒｅｆの大きさより大きいと、図２
（Ｄ）に示したように出力電圧Ｖｏｕｔｐｕｔの大きさ
は基準電圧Ｖｒｅｆより小さくなる。且つ、反対に、上
記電圧Ｖｉｎｐｕｔの大きさが基準電圧Ｖｒｅｆの大き
さより小さいと、出力電圧Ｖｏｕｔｐｕｔの大きさは基
準電圧Ｖｒｅｆの大きさより大きくなる。Then, the voltage Vinput input to the inverting terminal (-) of the operational amplifier OP is negatively amplified by the resistor R7 and output, and the output voltage Voutp is output.
ut is applied to an external load and used as an input power supply for the load. On the other hand, the size of the commercial power source voltage V AC is changed also the magnitude of that when the voltage Vinput change, Wakashi, as shown in FIG. 2 (C), the magnitude of the voltage Vinput is than the magnitude of the reference voltage Vref Fig. 2
As shown in (D), the magnitude of the output voltage Voutput becomes smaller than the reference voltage Vref. On the contrary, when the magnitude of the voltage Vinput is smaller than the magnitude of the reference voltage Vref, the magnitude of the output voltage Voutput becomes larger than the magnitude of the reference voltage Vref.

【０００７】即ち、常用電源電圧ＶACが高いと出力電圧
Ｖｏｕｔｐｕｔの大きさは小さくなり、反対に常用電源
電圧ＶACが小さいと出力電圧Ｖｏｕｔｐｕｔの大きさは
大きくなるため、出力電圧補償回路は出力端に連結され
た負荷が必要とする出力電圧を発生する。併し、このよ
うに構成された従来出力電圧補償回路においては、上記
平滑部２０のコンデンサーＣ１の両方端に掛かる電圧Ｖ
ｉｎDCが外部に連結された負荷の変動により変化するた
め、出力電圧補償回路は安定した出力電圧を出力するこ
とができなかった。例えば、所望の出力が１２００Ｗで
あるとき、１０％、即ち、１２０Ｗ程度の誤差が発生
し、よって、回路が安定した動作を行うためには大容量
で高耐圧のコンデンサーＣ１を使用すべきであった。Namely, commercial power voltage V AC is small size of the high and the output voltage Voutput, since the greater the magnitude of the output voltage Voutput the commercial power source voltage V AC Conversely small, the output voltage compensation circuit output The load connected to the end generates the required output voltage. However, in the conventional output voltage compensating circuit configured as described above, the voltage V applied to both ends of the capacitor C1 of the smoothing unit 20 is used.
The output voltage compensating circuit cannot output a stable output voltage because in DC changes due to a change in an externally connected load. For example, when the desired output is 1200 W, an error of 10%, that is, about 120 W occurs. Therefore, in order to perform a stable operation of the circuit, a large-capacity and high-withstand-voltage capacitor C1 should be used. Was.

【０００８】且つ、上記平滑部２０のコンデンサーＣ１
の動作により電圧分配部３０の抵抗素子Ｒ１，Ｒ２及び
Ｒ３には恒常所定大きさの電流が流れ、所定大きさの電
力（Power ）がそれら抵抗素子Ｒ１，Ｒ２及びＲ３に恒
常印加するため、容量の大きい抵抗素子を使用すべきで
あった。The condenser C1 of the smoothing section 20
The current of a predetermined magnitude constantly flows through the resistance elements R1, R2 and R3 of the voltage distribution unit 30 by the operation of, and a predetermined amount of power (Power) is constantly applied to the resistance elements R1, R2 and R3. Should be used.

【０００９】[0009]

【発明が解決しようとする課題】然るに、このように構
成された従来出力電圧補償回路においては、抵抗素子の
構成が複雑で大容量及び高耐圧のコンデンサーを必要と
するため、構成が煩雑で原価が上昇するという不都合な
点があった。However, in the conventional output voltage compensating circuit configured as described above, the configuration of the resistor element is complicated, and a large-capacity and high-voltage capacitor is required. Had the disadvantage of rising.

【００１０】[0010]

【課題を解決するための手段】本発明の目的は、回路の
構成が簡単で補償特性を優秀に保持し得る出力電圧補償
回路を提供しようとするものである。このような目的を
達成するため、本発明に係る出力電圧補償回路において
は、常用電源ＡＣの一方側入力端にアノード端子の連結
されたダイオードＤ２と、該ダイオードＤ２のカソード
端子と接地間に直列連結された第１、第２抵抗Ｒ１１，
Ｒ１２と、該第２抵抗Ｒ１２と並列連結されたコンデン
サーＣ２と、を備えて、常用電源電圧ＶACを半波整流し
分圧した電圧（Ｖｉｎｐｕｔ）を出力する整流及び分配
部１００と、該整流及び分配部１００から出力した電圧
（Ｖｉｎｐｕｔ）と所定の基準電圧（Ｖｒｅｆ）とを比
較し、該出力電圧（Ｖｉｎｐｕｔ）を負帰還増幅する比
較部４０と、から構成されている。SUMMARY OF THE INVENTION An object of the present invention is to provide an output voltage compensating circuit which has a simple circuit structure and can maintain excellent compensation characteristics. In order to achieve such an object, in the output voltage compensating circuit according to the present invention, a diode D2 having an anode terminal connected to one input terminal of a common power supply AC, and a diode D2 connected in series between a cathode terminal of the diode D2 and ground. The connected first and second resistors R11, R11,
And R12, and second resistors R12 and parallel concatenated condenser C2, comprise a rectifier and dispensing unit 100 outputs the half-wave rectifying the commercial power voltage V AC and obtained by dividing a voltage (Vinput), rectifier And a comparator 40 that compares the voltage (Vinput) output from the distributor 100 with a predetermined reference voltage (Vref) and amplifies the output voltage (Vinput) by negative feedback.

【００１１】[0011]

【発明の実施の形態】以下、本発明の実施の形態に対
し、図面を用いて説明する。本発明に係る出力電圧補償
回路においては、図１に示したように常用電源ＡＣ（１
１０Ｖ、又は２２０Ｖ）の一方側入力端にアノード端子
の連結されたダイオードＤ２と、該ダイオードＤ２のカ
ソード端子と接地間に直列連結された第１、第２抵抗Ｒ
１１，Ｒ１２と、該第２抵抗Ｒ１２と並列連結されたコ
ンデンサーＣ２と、を備えて、常用電源電圧ＶACを半波
整流し分圧した電圧（Ｖｉｎｐｕｔ）を出力する整流及
び分配部１００と、電源電圧Ｖｃｃと接地間に直列連結
された第３、第４抵抗Ｒ５，Ｒ６と、それら第３、第４
抵抗Ｒ５，Ｒ６の接続点が非反転端子（＋）に連結さ
れ、上記整流及び分配部１００の第１、第２抵抗Ｒ１
１，Ｒ１２の接続点が反転端子（−）に連結された演算
増幅器（ＯＰ）と、該演算増幅器（ＯＰ）の反転端子
（−）と出力端間に連結された第５抵抗Ｒ７と、を備え
た比較部４０と、から構成されている。図中、未説明符
号ＢＤはブリッジダイオードを示したものである。Embodiments of the present invention will be described below with reference to the drawings. In the output voltage compensating circuit according to the present invention, as shown in FIG.
10V or 220V), a diode D2 having an anode terminal connected to one input terminal thereof, and first and second resistors R connected in series between a cathode terminal of the diode D2 and ground.
11, and R12, and second resistors R12 and parallel concatenated condenser C2, comprise a rectifier and dispensing unit 100 outputs the half-wave rectifying the commercial power voltage V AC and obtained by dividing a voltage (Vinput), Third and fourth resistors R5 and R6 connected in series between the power supply voltage Vcc and ground;
The connection point of the resistors R5 and R6 is connected to the non-inverting terminal (+), and the first and second resistors R1 of the rectifier and distributor 100 are connected.
An operational amplifier (OP) having a connection point between R1 and R12 connected to an inverting terminal (-) and a fifth resistor R7 connected between the inverting terminal (-) and the output terminal of the operational amplifier (OP). And a comparison unit 40 provided. In the figure, the unexplained reference numeral BD indicates a bridge diode.

【００１２】このように構成された本発明に係る出力電
圧補償回路の動作に対し、図２（Ａ）〜（Ｅ）を用いて
説明すると次のようである。先ず、図２（Ａ）に示した
ように、常用電源電圧ＶACは整流及び分配部１００のダ
イオードＤ２により半波整流され、該半波整流された電
圧は第１及び第２抵抗Ｒ１１，Ｒ１２により分圧され、
該分圧された電圧ＶｉｎｐｕｔはコンデンサーＣ２で平
滑される。The operation of the output voltage compensating circuit thus constructed according to the present invention will be described below with reference to FIGS. First, as shown in FIG. 2A, the normal power supply voltage VAC is half-wave rectified by the diode D2 of the rectification and distribution unit 100, and the half-wave rectified voltage is supplied to the first and second resistors R11 and R12. Is divided by
The divided voltage Vinput is smoothed by the capacitor C2.

【００１３】このとき、常用電源の通過する経路（Pat
h）は、ダイオードＤ２、第１抵抗Ｒ１１、第２抵抗Ｒ
１２、及びブリッジダイオードＢＤ（図示されず）内部
のダイオードから形成される。且つ、上記分圧されたＶ
ｉｎｐｕｔの波形は図２（Ｂ）に示したように、上記ダ
イオードＤ２の接続方向により常用電源電圧ＶACが半波
整流されるため、該電圧Ｖｉｎｐｕｔ内にマイナス
（−）の成分はない。At this time, a route (Pat
h) includes a diode D2, a first resistor R11, and a second resistor R
12, and a diode inside a bridge diode BD (not shown). And the divided V
As input is the waveform shown in FIG. 2 (B), since the connecting direction of the diode D2 is emergency power supply voltage V AC is half-wave rectified, negative in the voltage Vinput (-) component of not.

【００１４】又、常用電源電圧ＶACがマイナス（−）で
あるときは、該常用電源電圧ＶACが整流及び分配部１０
０に入力されないため、その間は、上記第１抵抗Ｒ１１
には電流が流れない。次いで、上記電圧Ｖｉｎｐｕｔは
比較部４０の演算増幅器ＯＰの反転端子（−）に入力さ
れ、電源電圧Ｖｃｃは第３及び第４抵抗Ｒ５，Ｒ６によ
り分圧されて基準電圧Ｖｒｅｆとなり、該基準電圧Ｖｒ
ｅｆは上記演算増幅器ＯＰの非反転端子（＋）に入力さ
れる。[0014] Also, commercial power voltage V AC is negative (-) is the time at the the normally supply voltage V AC is rectified and dispensing unit 10
0, so that the first resistor R11
No current flows through. Next, the voltage Vinput is input to the inverting terminal (-) of the operational amplifier OP of the comparison unit 40, and the power supply voltage Vcc is divided by the third and fourth resistors R5 and R6 to become the reference voltage Vref, and the reference voltage Vr
ef is input to the non-inverting terminal (+) of the operational amplifier OP.

【００１５】次いで、上記演算増幅器ＯＰの反転端子
（−）と出力端間に連結された第５抵抗Ｒ７により該演
算増幅器ＯＰに入力される上記電圧Ｖｉｎｐｕｔは負帰
還増幅されるが、若し、該電圧Ｖｉｎｐｕｔが図２
（Ｃ）に示したようであると、上記比較部４０の出力電
圧Ｖｏｕｔｐｕｔは図２（Ｄ）に示したようになる。即
ち、上記基準電圧Ｖｒｅｆを基準にし、上記電圧Ｖｉｎ
ｐｕｔが高いと出力電圧Ｖｏｕｔｐｕｔは低くなり、上
記電圧Ｖｉｎｐｕｔが低いと出力電圧Ｖｏｕｔｐｕｔは
高くなる。Next, the voltage Vinput input to the operational amplifier OP is negative-feedback amplified by a fifth resistor R7 connected between the inverting terminal (-) of the operational amplifier OP and the output terminal. The voltage Vinput is shown in FIG.
As shown in FIG. 2C, the output voltage Voutput of the comparison unit 40 becomes as shown in FIG. That is, based on the reference voltage Vref, the voltage Vin
When the output is high, the output voltage Voutput is low, and when the input voltage Vinput is low, the output voltage Voutput is high.

【００１６】よって、常用電源電圧ＶACが高いと出力電
圧Ｖｏｕｔｐｕｔの大きさは小さくなり、反対に常用電
源電圧ＶACが低いと出力電圧Ｖｏｕｔｐｕｔの大きさは
大きくなって、入力電圧は補償されて出力される。この
場合、常用電源電圧ＶACに対する出力電圧は、図２
（Ｅ）に示したように、１２００Ｗでほぼ一定に維持さ
れ、その誤差は約３％に過ぎない。[0016] Thus, commercial power voltage V AC is small size of the high and the output voltage Voutput, increases the size of the commercial power source voltage V AC to the opposite lower output voltage Voutput, input voltage is compensated Is output. In this case, the output voltage with respect to commercial power voltage V AC is 2
As shown in (E), it is kept almost constant at 1200 W, and its error is only about 3%.

【００１７】[0017]

【発明の効果】以上説明したように、本発明に係る出力
電圧補償回路においては、常用電源電圧ＶACを半波整流
し、該半波整流された電圧を補償して出力するため、簡
単な構造の回路により出力電圧を補償し得るという効果
がある。且つ、常用電源電圧ＶACがマイナス（−）であ
るときは、該常用電源ＡＣは整流及び分配部１００に入
力されず、その間は、第１抵抗Ｒ１１には電流が流れな
いため、従来回路において電圧分配用の３個の抵抗Ｒ
１，Ｒ２及びＲ３の容量が相互同様で、それら中何れ１
つの抵抗（Ｒ１，Ｒ２及びＲ３）の容量と本発明の第１
抵抗Ｒ１１の容量とが同様な場合、本発明では１個の抵
抗Ｒ１１のみで充分に電圧分配を行い得るという効果が
ある。As described in the foregoing, in the output voltage compensation circuit according to the present invention, the commercial power source voltage V AC half-wave rectification, to output to compensate for the voltage that is semi-wave rectification, a simple There is an effect that the output voltage can be compensated by the circuit having the structure. And, commercial power source voltage V AC is negative (-) when a is the normally power AC is not input to the rectification and distributor 100, during which, since the first resistor R11 no current flows, in the conventional circuit Three resistors R for voltage distribution
1, R2 and R3 have the same capacity,
Of the two resistors (R1, R2 and R3) and the first resistor of the present invention.
When the capacitance of the resistor R11 is the same, the present invention has an effect that voltage distribution can be sufficiently performed with only one resistor R11.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明に係る出力電圧補償回路を示した回路図
である。FIG. 1 is a circuit diagram showing an output voltage compensation circuit according to the present invention.

【図２】本発明に係る出力電圧補償回路の各部の出力電
圧波形図である。FIG. 2 is an output voltage waveform diagram of each part of the output voltage compensation circuit according to the present invention.

【図３】従来出力電圧回路を示した回路図である。FIG. 3 is a circuit diagram showing a conventional output voltage circuit.

【図４】従来出力電圧補償回路の各部の出力電圧波形図
である。FIG. 4 is an output voltage waveform diagram of each section of a conventional output voltage compensation circuit.

【符号の説明】[Explanation of symbols]

１００…整流及び分配部 ４０…比較部 Ｄ２…ダイオード Ｒ５，Ｒ６，Ｒ７，Ｒ１１，Ｒ１５…抵抗 Ｃ２…コンデンサー ＯＰ…演算増幅器 ＡＣ…常用電源 ＶAC…常用電源電圧 Ｖｉｎｐｕｔ…整流及び分配部出力電圧 Ｖｒｅｆ…基準電圧Reference Signs List 100 rectifier and distributor 40 comparator D2 diode R5, R6, R7, R11, R15 resistor C2 capacitor OP operational amplifier AC regular power supply V AC regular power supply voltage Vinput rectifier and distributor output voltage Vref … Reference voltage

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 常用電源（ＡＣ）の一方側入力端にアノ
ード端子の連結されたダイオード（Ｄ２）と、該ダイオ
ード（Ｄ２）のカソード端子と接地間に直列連結された
第１、第２抵抗（Ｒ１１，Ｒ１２）と、該第２抵抗（Ｒ
１２）と並列連結されたコンデンサー（Ｃ２）と、から
構成され、常用電源電圧（ＶAC）を半波整流し分圧して
電圧（Ｖｉｎｐｕｔ）を出力する整流及び分配部（１０
０）と、 該整流及び分配部（１００）から出力した電圧（Ｖｉｎ
ｐｕｔ）と所定の基準電圧（Ｖｒｅｆ）とを比較し、該
出力電圧（Ｖｉｎｐｕｔ）を負帰還増幅する比較部（４
０）と、を具備することを特徴とする出力電圧補償回
路。An anomaly is connected to one input terminal of a commercial power supply (AC).
A diode (D2) connected to a diode terminal;
(D2) connected in series between the cathode terminal and ground.
First and second resistors (R11, R12) and the second resistor (R
12) and a capacitor (C2) connected in parallel with
A rectifying and distributing unit (10) configured to half-wave rectify the common power supply voltage (V AC ), divide the voltage, and output a voltage (Vinput)
0), and the voltage (Vin) output from the rectifier and distributor (100).
(pref) and a predetermined reference voltage (Vref), and a comparator (4) that performs negative feedback amplification of the output voltage (Vinput).
0), and an output voltage compensation circuit. 【請求項２】 上記比較部（４０）は、電源電圧Ｖｃｃ
と接地間に直列連結された第３、第４抵抗（Ｒ５，Ｒ
６）と、それら第３、第４抵抗（Ｒ５，Ｒ６）の接続点
が非反転端子に連結され、上記整流及び分配部（１０
０）の第１、第２抵抗（Ｒ１１，Ｒ１２）の接続点が反
転端子に連結された演算増幅器（ＯＰ）と、該演算増幅
器（ＯＰ）の反転端子と出力端子間に連結された第５抵
抗（Ｒ７）と、から構成され、前記基準電圧（Ｖｒｅ
ｆ）により上記整流及び分配部（１００）の出力電圧
（Ｖｉｎｐｕｔ）を負帰還増幅して出力することを特徴
とする請求項１に記載の出力電圧補償回路。2. The power supply voltage Vcc according to claim 2, wherein:
And fourth resistors (R5, R5) connected in series between
6) and the connection points of the third and fourth resistors (R5, R6) are connected to a non-inverting terminal, and the rectification and distribution unit (10
0), an operational amplifier (OP) having a connection point of the first and second resistors (R11, R12) connected to an inverting terminal, and a fifth operational amplifier (OP) connected between the inverting terminal and the output terminal of the operational amplifier (OP). A resistor (R7), and the reference voltage (Vre
2. The output voltage compensating circuit according to claim 1 , wherein the output voltage (Vinput) of the rectifying and distributing unit (100) is subjected to negative feedback amplification and output by f).
JP9122281A 1996-05-13 1997-05-13 Output voltage compensation circuit Expired - Lifetime JP2886845B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR15771/1996 1996-05-13
KR1019960015771A KR970076151A (en) 1996-05-13 1996-05-13 Output compensation circuit for each voltage

Publications (2)

Publication Number Publication Date
JPH1070884A JPH1070884A (en) 1998-03-10
JP2886845B2 true JP2886845B2 (en) 1999-04-26

Family

ID=19458492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9122281A Expired - Lifetime JP2886845B2 (en) 1996-05-13 1997-05-13 Output voltage compensation circuit

Country Status (4)

Country Link
JP (1) JP2886845B2 (en)
KR (1) KR970076151A (en)
CN (1) CN1050464C (en)
TW (1) TW510617U (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101841233B (en) * 2010-04-27 2012-08-22 上海交通大学 Dynamic voltage compensation device based on AC/AC converter
CN106847144A (en) * 2017-03-23 2017-06-13 京东方科技集团股份有限公司 Test interconnecting module, terminal test system and method for testing

Also Published As

Publication number Publication date
CN1166078A (en) 1997-11-26
KR970076151A (en) 1997-12-12
CN1050464C (en) 2000-03-15
TW510617U (en) 2002-11-11
JPH1070884A (en) 1998-03-10

Similar Documents

Publication Publication Date Title
US5644214A (en) Power factor correction circuit
US8018744B1 (en) Power factor correction by measurement and removal of overtones
US7501800B2 (en) Power factor correction circuit and output voltage control method thereof
US8619442B2 (en) Boost-buck power factor correction
US20120250381A1 (en) Power supply circuit
JP2016119761A (en) Switching power supply circuit
JPH06217551A (en) Active three phase power adjustment device
US11742746B2 (en) Switching control circuit and power supply circuit
EP0782782A1 (en) Power factor corrected electrical power converter
US8289738B2 (en) Switching power supply
JP2886845B2 (en) Output voltage compensation circuit
JP2001008452A (en) Power supply device
US4245294A (en) Power supply providing constant power output
JPS61122725A (en) Regulated power supply
JPH05300667A (en) Switching power supply type charger
JPH08205534A (en) Switching power supply circuit
JPH0650016Y2 (en) High voltage stabilized power supply circuit
JP2000116125A (en) Power circuit
JP2513741Y2 (en) Overcurrent detection circuit for switching power supply
JP2856511B2 (en) Load current detection circuit for multi-output power supply circuit
JPH0431611Y2 (en)
JPH019270Y2 (en)
CN117691546A (en) Over-temperature protection circuit and power supply device applicable to same
SU767737A1 (en) Stabilized power supply source
JPH0534888B2 (en)

Legal Events

Date Code Title Description
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 19990112