JPS645983Y2 - - Google Patents
Info
- Publication number
- JPS645983Y2 JPS645983Y2 JP11348284U JP11348284U JPS645983Y2 JP S645983 Y2 JPS645983 Y2 JP S645983Y2 JP 11348284 U JP11348284 U JP 11348284U JP 11348284 U JP11348284 U JP 11348284U JP S645983 Y2 JPS645983 Y2 JP S645983Y2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- output voltage
- power supply
- output
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 11
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
- Dc-Dc Converters (AREA)
Description
【考案の詳細な説明】
〔考案の目的〕
（産業上の利用分野）
本考案はシヤントレギユレータを制御回路に備
えたスイツチング式直流安定化電源装置に関する
もので、出力電圧を０ボルトから調整可能として
汎用性を高めたものである。[Detailed explanation of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a switching type DC stabilized power supply device equipped with a shunt regulator in the control circuit, and is capable of adjusting the output voltage from 0 volts. It is adjustable and has increased versatility.
（従来技術）
スイツチング式直流安定化電源装置として、例
えば第１図に示す如き回路構成をもつものが使用
されている。この装置は非安定直流電源VDをト
ランジスタなどのスイツチング素子によりオンオ
フして、出力トランスＴの１次巻線にパルス電流
を流して、２次巻線にパルス出力電圧を得、これ
を整流フイルタ回路RFにより整流して、直流出
力電圧を得るものである。また整流フイルタ回路
RFの出力端間には、分圧抵抗R1，R2からな
る電圧検出回路DVOと、これと並列の制御信号発
生回路CS即ち抵抗R3と電−光変換素子、例えば
ホトダイオードPD、および上記電圧検出回路
DVOの検出出力電圧Vrefにより、制御極をトリガ
されるシヤントレギユレータSRとを直列に接続
した制御信号発生回路CSからなる制御回路COを
接続する。そして出力電圧VOの変化に対応して
シヤントレギユレータSRに流される電流を、ホ
トダイオードPDとホトトランジスタPTとにより
絶縁して検出し、これにより出力電圧VOを一定
とするようにインバータ回路Iovのオンオフ周期
を変化させるものである。(Prior Art) As a switching type DC stabilized power supply device, one having a circuit configuration as shown in FIG. 1, for example, is used. This device turns an unstable DC power supply V D on and off using a switching element such as a transistor, causes a pulse current to flow through the primary winding of an output transformer T, obtains a pulse output voltage through the secondary winding, and converts this into a rectifier filter. It is rectified by circuit RF to obtain DC output voltage. Also rectifier filter circuit
Between the output terminals of the RF, there is a voltage detection circuit DVO consisting of voltage dividing resistors R 1 and R 2 , a control signal generation circuit CS in parallel with this, that is, a resistor R 3 , an electro-optical conversion element, such as a photodiode PD, and Above voltage detection circuit
A control circuit CO consisting of a control signal generation circuit CS connected in series with a shunt regulator SR whose control pole is triggered by the detected output voltage V ref of the DVO is connected. Then, the current flowing through the shunt regulator SR in response to changes in the output voltage V O is isolated and detected by the photodiode PD and phototransistor PT, and the inverter is thereby insulated to keep the output voltage V O constant. This changes the on/off cycle of the circuit Iov .
（従来技術の問題点）
この直流安定化電源装置はインバータ回路Iov
のオンオフ周期を高めることによつて、出力トラ
ンスを小型化して装置を小型低価額化することが
でき、しかもシヤントレギユレータSRを用いて
いるので、従来のパルス幅変調制御回路によるも
のに比べて制御回路を簡単低価額化できる。従つ
てこれを組込まれる電子計算機などの装置の小型
低価額化に寄与する。しかしシヤントレギユレー
タは制御極の制御電圧として、2.5ボルトのもの
しか作られていないため、分圧抵抗R2により出
力電圧VOを可変しようとしても、制御極の電圧
が2.5ボルト以下の電圧になるような出力電圧VO
以下には可変できない。従つてこのシヤントレギ
ユレータSRを用いるスイツチング式直流安定化
電源装置では、出力電圧に一定の使用限界があり
汎用性に欠ける難点がある。(Problems with conventional technology) This DC stabilized power supply device uses an inverter circuit I ov
By increasing the on/off cycle of the output transformer, the output transformer can be made smaller and the device can be made smaller and cheaper. Furthermore, since the shunt regulator SR is used, it is possible to reduce the size and cost of the device. Compared to this, the cost of the control circuit can be easily reduced. Therefore, it contributes to miniaturization and cost reduction of devices such as electronic computers into which it is incorporated. However, shunt regulators are only made with a control voltage of 2.5 volts for the control pole, so even if you try to vary the output voltage V O with the voltage dividing resistor R 2 , the voltage at the control pole will be lower than 2.5 volts. The output voltage V O
The following cannot be changed. Therefore, the switching type DC stabilized power supply device using this shunt regulator SR has a drawback that the output voltage has a certain usage limit and lacks versatility.
本考案は簡単安価な回路の付加により、出力電
圧を０ボルトから可変できる汎用性の高い電源回
路の提供を目的としてなされたものである。 The present invention has been made with the aim of providing a highly versatile power supply circuit that can vary the output voltage from 0 volts by adding a simple and inexpensive circuit.
（問題点を解決するための構成）
第２図は本考案の一実施例回路図（第１図と同
一符号部分は同等部分を示す）であつて、本考案
の特徴とするところは次の点にある。即ち出力電
圧VSを可変できる直流安定化電源回路Ｂを、前
記第１図の従来回路Ａに付加する。そして電源回
路Ｂの側出力端をスイツチング式直流安定化電
源装置Ａの側出力端に接続し、側出力端を電
圧検出回路DVOの分圧抵抗R1の入力端に接続し
て、電圧検出回路DVOに出力電圧VOと電圧可変
型直流安定化電源回路Ｂの出力電圧VSの和電圧
が加えられるようにしたことを特徴とするもので
ある。
(Configuration for solving problems) Figure 2 is a circuit diagram of one embodiment of the present invention (the same reference numerals as in Figure 1 indicate equivalent parts), and the features of the present invention are as follows. At the point. That is, a DC stabilized power supply circuit B that can vary the output voltage V S is added to the conventional circuit A shown in FIG. Then, the side output terminal of power supply circuit B is connected to the side output terminal of switching type DC stabilized power supply A, and the side output terminal is connected to the input terminal of voltage dividing resistor R 1 of voltage detection circuit DV O to detect the voltage. This circuit is characterized in that the sum voltage of the output voltage V O and the output voltage V S of the voltage variable DC stabilized power supply circuit B is applied to the circuit D O.
なお直流安定化電源回路ＢにおいてVAは、非
安定交流電源例えば商用周波電源、T1は電圧変
換用トランス、RF1は整流平滑回路、SCは例え
ば公知の３端子レギユレータ、DVSは電圧検出回
路、R4はその分圧抵抗、VRは可変抵抗、C1はフ
イルタコンデンサであつて、分圧抵抗VRの調整
により出力電圧VSを広い範囲で可変するもので、
この電圧可変回路としては任意公知の回路を用い
うる。 In the DC stabilized power supply circuit B, V A is an unstable AC power source such as a commercial frequency power supply, T 1 is a voltage conversion transformer, RF 1 is a rectifying and smoothing circuit, SC is a known three-terminal regulator, and DV S is a voltage detection In the circuit, R4 is the voltage dividing resistor, VR is the variable resistor, C1 is the filter capacitor, and the output voltage V S can be varied over a wide range by adjusting the voltage dividing resistor VR.
Any known circuit can be used as this voltage variable circuit.
（考案の作用並びに効果）
以上のようにスイツチング式直流安定化電源装
置Ａの電圧検出回路DVOの入力電圧を、出力電圧
VOと電圧可変型直流安定化電源回路Ｂの出力電
圧VSとの和電圧とすれば、シヤントレギユレー
タSRの制御極の入力インピーダンスは高インピ
ーダンスであるので、その分圧電圧即ちシヤント
レギユレータSRの制御極の電圧をVrefとしたと
き、電圧検出回路DVOの入力電圧である点ａ−ｃ
間の電圧Vacは、
Vac＝Vref（１＋R1／R2） …(1)
によつて与えられる。一方電圧Vacは
Vac＝VO＋VS …(2)
であるから(1)式は
VO＋VS＝Vref（１＋R1／R2） …(3)
となる。従つてこれから出力電圧VOは
VO＝Vref（１＋R1／R2）−VS …(4)
によつて与えられるが、この(4)式は電圧可変型直
流安定化電源回路Ｂの出力電圧VSを可変にする
ことにより、スイツチング式直流安定化電源装置
Ａの出力電圧VOが可変されることを示している。
例えば可変抵抗VRにより電圧VSを調整してその
値が電圧検出回路DVOの入力電圧、即ち
Vref（１＋R1／R2）
と等しくなつたときには、両電圧が相殺されて直
流安定化電源回路Ａの出力VOは０ボルトとなり、
回路Ｂの出力電圧VSを小にするに伴い、回路Ａ
の出力電圧VOが高くなることを示している。例
えば３端子レギユレータSCにより、VSの可変範
囲を３〜35ボルトで安定になるように設定すれ
ば、VSが35ボルトのときVOは０ボルト、VSが３
ボルトのときVOは32ボルトになり、０から32ボ
ルトまで出力電圧を可変できる電源装置が得られ
る。従つて電圧可変型直流安定化電源回路Ｂの最
大出力電圧を選定することにより、出力電圧VO
を０ボルトから回路を構成する素子の許容耐圧電
圧まで可変できる。(Operations and effects of the invention) As described above, the input voltage of the voltage detection circuit DVO of the switching type DC stabilized power supply A is changed from the output voltage to
If the voltage is the sum of V O and the output voltage V S of the voltage variable DC stabilized power supply circuit B, the input impedance of the control pole of the shunt regulator SR is high impedance, so the divided voltage, that is, the shunt When the voltage of the control pole of the regulator SR is Vref , the input voltage of the voltage detection circuit DVO is the point a-c.
The voltage V ac between them is given by V ac = V ref (1+R 1 /R 2 ) (1). On the other hand, since the voltage V ac is V ac =V O +V S (2), equation (1) becomes V O +V S =V ref (1+R 1 /R 2 ) (3). Therefore, from now on, the output voltage V O is given by V O = V ref (1 + R 1 / R 2 ) - V S (4), but this equation (4) is It is shown that by making the output voltage V S variable, the output voltage V O of the switching type DC stabilized power supply A can be varied.
For example, when the voltage VS is adjusted by the variable resistor VR and its value becomes equal to the input voltage of the voltage detection circuit DVO , that is, V ref (1+R 1 /R 2 ), the two voltages cancel each other out and the DC stabilized power supply The output V O of circuit A becomes 0 volts,
As the output voltage V S of circuit B is reduced, circuit A
This indicates that the output voltage VO of For example, if the variable range of V S is set to be stable between 3 and 35 volts using a 3-terminal regulator SC, when V S is 35 volts, V O is 0 volts and V S is 3 volts.
When it is volt, V O becomes 32 volts, and a power supply device whose output voltage can be varied from 0 to 32 volts is obtained. Therefore, by selecting the maximum output voltage of the voltage variable DC stabilized power supply circuit B, the output voltage V O
can be varied from 0 volts to the allowable withstand voltage of the elements that make up the circuit.
しかもシヤントレギユレータSRの制御極の入
力インピーダンスは高く、これに伴い電圧検出回
路DVOの抵抗R1，R2も高抵抗である。従つてこ
の回路の流入電流は10mA程度であり、消費電力
も30ボルト可変型でも400W程度であるので、電
圧可変型直流安定化電源回路Ｂを小型安価なIC
素子などを利用して構成できる。その結果従来装
置と大差ない大きさと価額で出力電圧の異なる各
種装置の電源に使用できる汎用性にすぐれた直流
安定化電源装置を提供できる。 Furthermore, the input impedance of the control pole of the shunt regulator SR is high, and accordingly, the resistors R 1 and R 2 of the voltage detection circuit D VO also have high resistance. Therefore, the inflow current of this circuit is about 10 mA, and the power consumption is about 400 W even for a 30-volt variable type, so the variable voltage DC stabilized power supply circuit B can be implemented using a small and inexpensive IC.
It can be configured using elements. As a result, it is possible to provide a highly versatile DC stabilized power supply device that can be used as a power source for various devices with different output voltages and has a size and cost similar to conventional devices.
第１図は従来装置の回路図、第２図は本考案の
一実施例回路図である。
Ａ……スイツチング式直流安定化電源装置、
VD……非安定直流電源、Iov……インバータ回路、
Ｔ……出力トランス、RF……整流回路、DVO…
…電圧検出回路、R1，R2……分圧抵抗、CS……
制御信号発生回路、PD……ホトダイオード、PT
……ホトトランジスタ、R3……抵抗、SR……シ
ヤントレギユレータ、CP……制御回路、VA……
非安定交流電源、T1……電圧変換用トランス、
RF1……整流平滑回路、SC……３端子レギユレ
ータ、DVS……電圧検出回路、R4……分圧抵抗、
VR……可変抵抗、C1……フイルタコンデンサ。
FIG. 1 is a circuit diagram of a conventional device, and FIG. 2 is a circuit diagram of an embodiment of the present invention. A... Switching type DC stabilized power supply device,
V D ... Unstable DC power supply, I ov ... Inverter circuit,
T...output transformer, RF...rectifier circuit, DV O ...
...Voltage detection circuit, R 1 , R 2 ... Voltage dividing resistor, CS...
Control signal generation circuit, PD...photodiode, PT
...Phototransistor, R 3 ...Resistor, SR...Shunt regulator, CP...Control circuit, V A ...
Unstable AC power supply, T 1 ... voltage conversion transformer,
RF 1 ... Rectifier and smoothing circuit, SC ... 3-terminal regulator, DV S ... Voltage detection circuit, R 4 ... Voltage dividing resistor,
VR...variable resistor, C 1 ...filter capacitor.
Claims (1)
御されるシヤントレギユレータを有する制御信号
発生回路とを備えた制御回路出力により、インバ
ータ回路を制御して出力電圧を安定化するスイツ
チング式直流安定化電源装置Ａと、電圧可変型直
流安定化電源回路Ｂとの組合せより成り、前者Ａ
の出力電圧と後者Ｂの出力電圧との和電圧を、前
者Ａの制御回路に加えるように接続し、後者Ｂの
出力電圧の調整により前者Ａの出力電圧を０ボル
トから可変できるようにしたことを特徴とする、
スイツチング式直流安定化電源装置。 A switching type DC stabilizer that controls the inverter circuit and stabilizes the output voltage using the output of a control circuit that includes an output voltage detection circuit and a control signal generation circuit that has a shunt regulator that is controlled by the detected voltage. It consists of a combination of a variable voltage DC stabilized power supply circuit B, and the former A
The sum voltage of the output voltage of the former A and the output voltage of the latter B is connected to be applied to the control circuit of the former A, and the output voltage of the former A can be varied from 0 volts by adjusting the output voltage of the latter B. characterized by
Switching type DC stabilized power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11348284U JPS6132786U (en) | 1984-07-27 | 1984-07-27 | Switching type DC stabilized power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11348284U JPS6132786U (en) | 1984-07-27 | 1984-07-27 | Switching type DC stabilized power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6132786U JPS6132786U (en) | 1986-02-27 |
| JPS645983Y2 true JPS645983Y2 (en) | 1989-02-15 |
Family
ID=30672511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11348284U Granted JPS6132786U (en) | 1984-07-27 | 1984-07-27 | Switching type DC stabilized power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6132786U (en) |
-
1984
- 1984-07-27 JP JP11348284U patent/JPS6132786U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6132786U (en) | 1986-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10715048B2 (en) | Controller and control method used in resonant converters | |
| KR100303450B1 (en) | Pfc controller | |
| JPH06335240A (en) | Switching type regulated power supply | |
| JPS57193819A (en) | Switching regulator | |
| JPS645983Y2 (en) | ||
| US3599082A (en) | Light-responsive voltage regulator for alternating-current source | |
| JP2584337Y2 (en) | Switching power supply | |
| JPS59181970A (en) | Power source circuit | |
| KR200155070Y1 (en) | Input Current Detection Circuit of Switching Mode Power Supply | |
| JP3010831B2 (en) | Switching power supply | |
| JPH0639366Y2 (en) | DC stabilized power supply | |
| JPH0521988Y2 (en) | ||
| JPH0521990Y2 (en) | ||
| JP2906569B2 (en) | Output voltage detection circuit of switching power supply | |
| JPH02294269A (en) | Power supply device | |
| JPS6142166Y2 (en) | ||
| JP2548186Y2 (en) | Control circuit of DC stabilized power supply | |
| JP2513741Y2 (en) | Overcurrent detection circuit for switching power supply | |
| SU1013926A1 (en) | Dc voltage stabilizer | |
| JP3090299B2 (en) | Power supply circuit | |
| KR880003311Y1 (en) | Automatic voltage circuit | |
| KR940005922Y1 (en) | Constant voltage tracking power circuit | |
| JPS59108413A (en) | Automatic level adjusting circuit | |
| SU1403299A1 (en) | Stabilized a.c. to d.c. voltage converter | |
| JPH0431611Y2 (en) |