JPS6380713A - Constant voltage source - Google Patents
Constant voltage sourceInfo
- Publication number
- JPS6380713A JPS6380713A JP22538886A JP22538886A JPS6380713A JP S6380713 A JPS6380713 A JP S6380713A JP 22538886 A JP22538886 A JP 22538886A JP 22538886 A JP22538886 A JP 22538886A JP S6380713 A JPS6380713 A JP S6380713A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power supply
- output
- constant voltage
- supply device
- 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
- 238000001514 detection method Methods 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は定電圧電源装置、特にその出力に過電流しゃ断
器を有する定電圧電源装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a constant voltage power supply, and particularly to a constant voltage power supply having an overcurrent breaker at its output.
従来の過電流しゃ断器を有する定電圧電源装置は第２図
に示すように過電流しゃ断器としてヒユーズを使用して
いる。入力端子Ａ、Ｂ間に印加された無安定電圧は、出
力電圧検出線２３で検出される出力電圧に応じて過電圧
保護及び出力電圧制御する電圧変換回路２１を介して安
定化された直流電圧に変換され、ヒユーズ２２を通して
出力端子Ｃ，Ｄ問に印加され、負荷１５に電力が供給さ
れる。定電圧電源装置２０は、入力端子Ａ。A conventional constant voltage power supply device having an overcurrent breaker uses a fuse as an overcurrent breaker, as shown in FIG. The unstable voltage applied between input terminals A and B is converted into a stabilized DC voltage via a voltage conversion circuit 21 that provides overvoltage protection and output voltage control according to the output voltage detected by the output voltage detection line 23. The converted signal is applied to output terminals C and D through fuse 22, and power is supplied to load 15. The constant voltage power supply device 20 has an input terminal A.
Ｂ、出力端子Ｃ，Ｄ、過電圧保護機能付電圧変換回路２
１、ヒユーズ２２、出力電圧検出線２３により構成され
ている。出力電圧検出線２３は、過電圧保護機能付電圧
変換回路２１とヒユーズ２２の接続点に接続されている
ので、何かの原因でヒユーズ１２が切断されても過電圧
保護機能付電圧変換回路２１の出力電圧は検出している
ので定電圧制御ができ、従って過大な出力電圧を発生し
て過電圧保護機能付電圧変換回路２１の内部素子、例え
ば平滑用コンデンサ等を破壊することはない。B, output terminals C, D, voltage conversion circuit 2 with overvoltage protection function
1, a fuse 22, and an output voltage detection line 23. The output voltage detection line 23 is connected to the connection point between the voltage conversion circuit with overvoltage protection function 21 and the fuse 22, so even if the fuse 12 is disconnected for some reason, the output of the voltage conversion circuit with overvoltage protection function 21 will not be interrupted. Since the voltage is detected, constant voltage control is possible, so that an excessive output voltage is not generated and the internal elements of the voltage conversion circuit 21 with overvoltage protection function, such as a smoothing capacitor, etc., are not destroyed.
上述した従来の定電圧電源装置は負荷電流の変動による
ヒユーズ２２での電圧降下の変動分は検出できないので
、負荷１５へ供給する負荷電流が変動した時の出力電圧
の安定度（ロードレギュレーション）が非常に悪くなる
という欠点があった。The above-mentioned conventional constant voltage power supply cannot detect variations in the voltage drop at the fuse 22 due to variations in load current, so the stability of the output voltage (load regulation) when the load current supplied to the load 15 varies. The drawback was that it became very bad.
又、この従来の回路は負荷１５へ電力の供給が出来なく
ても運転を続けると、いう欠点があった。Furthermore, this conventional circuit has the disadvantage that it continues to operate even if power cannot be supplied to the load 15.
本発明の目的は、このように従来の定電圧電源装置の欠
点を解決し、出力の過電流しゃ断器が正常な時は過電流
しゃ断器での電圧降下に起因するロードレギュレーショ
ンの低下をまねくことなく、かつ過電流しゃ断器がしゃ
断すると定電圧電源装置の動作を停止するようにした定
電圧電源装置を提供することにある。The purpose of the present invention is to solve the drawbacks of the conventional constant voltage power supply as described above, and to solve the problem that when the output overcurrent breaker is normal, the load regulation deteriorates due to the voltage drop in the overcurrent breaker. It is an object of the present invention to provide a constant voltage power supply device which does not have any problems and stops the operation of the constant voltage power supply device when an overcurrent breaker is cut off.
本発明の定電圧電源装置は、電圧変換回路の出力電圧を
過電流しゃ断器を介して負荷に電力を供給する定電圧電
源装置において、電圧変換回路と過電流しゃ断器との接
続点からの過電圧検出電圧および、過電流しゃ断器と定
電圧電源装置の出力端子との接続点からの出力検出電圧
を取り出し、前記電圧変換回路に供給し、かつ過電圧検
出電圧により電源電流を制御するように構成されている
。The constant voltage power supply device of the present invention is a constant voltage power supply device that supplies power from the output voltage of a voltage conversion circuit to a load via an overcurrent breaker. The detection voltage and the output detection voltage from the connection point between the overcurrent breaker and the output terminal of the constant voltage power supply device are extracted and supplied to the voltage conversion circuit, and the power supply current is controlled by the overvoltage detection voltage. ing.
次に本発明の実施例について図面を参照して説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例である定電圧電源装置を示す
。第１図において、本実施例は入力端子Ａ、Ｂに接続さ
れ、かつ一端が負荷回路１５に出力端子りを介して直接
接続される電圧変換回路１１と、電圧変換回路１１に接
続され、かつ負荷回路１５に出力端子Ｃを介して接続さ
れる過電流しゃ断器１２とを有する定電圧電源袋Ｗ１０
で、電圧変換回路１１と過電流しゃ断器１２との接続点
からの過電圧検出電圧！！ １３ ａと、過電流しゃ断
器１２と出力端子Ｃとの接続点からの出力電圧検出線１
３とが電圧変換回路１１に接続されている。FIG. 1 shows a constant voltage power supply device which is an embodiment of the present invention. In FIG. 1, this embodiment includes a voltage conversion circuit 11 connected to input terminals A and B, and one end of which is directly connected to a load circuit 15 via an output terminal; Constant voltage power supply bag W10 having an overcurrent breaker 12 connected to a load circuit 15 via an output terminal C
So, the overvoltage detection voltage from the connection point between the voltage conversion circuit 11 and the overcurrent breaker 12! ! 13a and the output voltage detection line 1 from the connection point between the overcurrent breaker 12 and the output terminal C
3 are connected to the voltage conversion circuit 11.
電圧変換回路１１は出力電圧を制御する機能と過電圧を
保護する機能を有していて、過電圧を検出する検出回路
１１ａと出力電圧を検出する検出回路１１ｂと、これら
の検出回路により電源電流を制御する制御回路１１ｃを
有している。The voltage conversion circuit 11 has a function of controlling the output voltage and a function of protecting against overvoltage, and includes a detection circuit 11a that detects overvoltage, a detection circuit 11b that detects the output voltage, and a power supply current that is controlled by these detection circuits. The control circuit 11c has a control circuit 11c.
次に、本実施例の動作を説明する。定電圧電源袋Ｗ１０
は過電流しゃ断器であるヒユーズ１２を介して負荷２０
に電力を供給している時、出力検出電圧として出力電圧
検出線１３により出力端子Ｃの電圧が取り出されるので
、負荷電流によるヒユーズ１２での電圧降下分の影響は
全くなくなり、出力端子Ｃ，Ｄ間の電圧は検出回路１１
ｂと制御回路１１ｃのもとに一定に保たれる。つまり、
ロードレギュレーションの低下を招かない。Next, the operation of this embodiment will be explained. Constant voltage power supply bag W10
is the load 20 via the fuse 12 which is an overcurrent breaker.
When power is being supplied to the output terminal C, the voltage at the output terminal C is taken out by the output voltage detection line 13 as the output detection voltage, so the influence of the voltage drop at the fuse 12 due to the load current is completely eliminated, and the voltage at the output terminals C, D The voltage between the detection circuit 11
b and is kept constant under the control circuit 11c. In other words,
Does not cause deterioration of load regulation.
又、何かの原因でヒユーズ１２が切断した場合には、出
力端子Ｃ，Ｄ間の電圧はなくなり、従って出力電圧検出
線１３に取り出される出力検出電圧は０となる。その結
果、電圧変換回路１１の出力電圧は増大する。増大した
出力電圧は過電圧検出線１３ａを介して過電圧検出回路
１１ａにより検出され、電圧変換回路１１内の過電圧保
護機能すなわち過電圧検出回路１１ａにより制御回路１
１Ｃが制御され、電源電流を停止させる。過電圧検出回
路等の保護回路１１は内部素子の許容電圧が過電圧検出
レベルより高いので破壊されない。又ヒユーズ１２は切
断されているので負荷２０に悪影響を与えることはない
。Furthermore, if the fuse 12 is disconnected for some reason, the voltage between the output terminals C and D disappears, and therefore the output detection voltage taken out to the output voltage detection line 13 becomes zero. As a result, the output voltage of the voltage conversion circuit 11 increases. The increased output voltage is detected by the overvoltage detection circuit 11a via the overvoltage detection line 13a, and the overvoltage protection function in the voltage conversion circuit 11, that is, the overvoltage detection circuit 11a causes the control circuit 1
1C is controlled and stops the power supply current. The protection circuit 11 such as an overvoltage detection circuit is not destroyed because the allowable voltage of its internal elements is higher than the overvoltage detection level. Further, since the fuse 12 is cut off, it does not adversely affect the load 20.
この実施例においては過電流しゃ断器としてヒユーズを
使用した場合を述べたが、過電流しゃ断器としてサーキ
ットブレーカ等ヒユーズ以外のものでも同じ効果が得ら
れることはいうまでもない。In this embodiment, a case has been described in which a fuse is used as an overcurrent breaker, but it goes without saying that the same effect can be obtained by using something other than a fuse, such as a circuit breaker, as an overcurrent breaker.
本発明は以上説明したように出力に過電流しゃ断器を有
する定電圧電源装置において、ロードレギュレーション
が良好で、かつ過電流しゃ断器時には定電圧電源装置の
動作を停止させるという効果がある。As explained above, the present invention has the effect of providing good load regulation in a constant voltage power supply having an overcurrent breaker at its output, and stopping the operation of the constant voltage power supply when the overcurrent breaker is present.
第１図は本発明の一実施例である定電圧電源装置を示す
回路図、第２図は従来の定電圧電源装置を示す回路図で
ある。
１１・・・電圧変換回路、ｌｌａ・・・過電圧検出回路
、ｌｌｂ・・・出力電圧検出回路、ｌｉｅ・・・制御回
路、１２・・・過電流しゃ断器（ヒユーズ）、１３・・
・出力電圧検出線、１３ａ・・・過電圧検出線、１０・
・・定電圧電源装置、１５・・・負荷、Ａ、Ｂ・・・入
力端子、Ｃ，Ｄ・・・出力端子。FIG. 1 is a circuit diagram showing a constant voltage power supply device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional constant voltage power supply device. DESCRIPTION OF SYMBOLS 11... Voltage conversion circuit, lla... Overvoltage detection circuit, llb... Output voltage detection circuit, lie... Control circuit, 12... Overcurrent breaker (fuse), 13...
・Output voltage detection line, 13a... Overvoltage detection line, 10・
... Constant voltage power supply device, 15... Load, A, B... Input terminal, C, D... Output terminal.
Claims (1)
に電力を供給する定電圧電源装置において、前記電圧変
換回路と前記過電流しや断器との接続点からの過電圧検
出電圧および、前記過電流しや断器と前記定電圧電源装
置の出力端子との接続点からの出力検出電圧とを取り出
し、前記電圧変換回路に供給し、かつ過電圧検出電圧に
より電源電流を制御するようにしたことを特徴とする定
電圧電源装置。In a constant voltage power supply device that supplies power to a load from an output voltage of a voltage converter circuit via an overcurrent switch and disconnector, an overvoltage detection voltage and an overvoltage detection voltage from a connection point between the voltage converter circuit and the overcurrent switch , extracting an output detection voltage from a connection point between the overcurrent shield breaker and the output terminal of the constant voltage power supply device and supplying it to the voltage conversion circuit, and controlling the power supply current using the overvoltage detection voltage. A constant voltage power supply device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22538886A JPS6380713A (en) | 1986-09-22 | 1986-09-22 | Constant voltage source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22538886A JPS6380713A (en) | 1986-09-22 | 1986-09-22 | Constant voltage source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6380713A true JPS6380713A (en) | 1988-04-11 |
Family
ID=16828578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22538886A Pending JPS6380713A (en) | 1986-09-22 | 1986-09-22 | Constant voltage source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6380713A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH022424U (en) * | 1988-06-17 | 1990-01-09 | ||
| JPH022423U (en) * | 1988-06-17 | 1990-01-09 |
-
1986
- 1986-09-22 JP JP22538886A patent/JPS6380713A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH022424U (en) * | 1988-06-17 | 1990-01-09 | ||
| JPH022423U (en) * | 1988-06-17 | 1990-01-09 | ||
| JPH0420899Y2 (en) * | 1988-06-17 | 1992-05-13 |
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