JPS61614U - Output voltage limit circuit - Google Patents
Output voltage limit circuitInfo
- Publication number
- JPS61614U JPS61614U JP8397884U JP8397884U JPS61614U JP S61614 U JPS61614 U JP S61614U JP 8397884 U JP8397884 U JP 8397884U JP 8397884 U JP8397884 U JP 8397884U JP S61614 U JPS61614 U JP S61614U
- Authority
- JP
- Japan
- Prior art keywords
- output voltage
- constant current
- output
- limiting circuit
- current source
- 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
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
第１図は定電流源１の出力特性を示す図、第２図は従来
例を示す回路図、第３図は第２図に示す従来例の定電流
装置３の出力特性を示す図、第４図は第２図に示す従来
例の定電流源１の出力特性を示す図、第５図は本考案の
一実施例を示す回路構成図、第６図は第５図に示す本考
案による一実施例の定電流装置４の出力特性を示す図、
第７図は第５図に示す本考案による一実施例の定電流源
１の出力特性を示す図である。
１・・・定電流源、２・・・負荷、３・・・定電流装置
、４・・・定電流装置、Ｒｌ，Ｒ２・・・分圧器、ＲＶ
・・・インピーダンス素子、ｒ，，ｒ２，ｒ３・・・抵
抗器、Ｑ・・・誤差増幅器、Ｐｃ ｉ・・・ホトカプラ
、Ｖｓ・・・基準電圧。1 is a diagram showing the output characteristics of the constant current source 1, FIG. 2 is a circuit diagram showing a conventional example, and FIG. 3 is a diagram showing the output characteristics of the conventional constant current device 3 shown in FIG. 4 is a diagram showing the output characteristics of the conventional constant current source 1 shown in FIG. 2, FIG. 5 is a circuit configuration diagram showing an embodiment of the present invention, and FIG. 6 is a diagram showing the output characteristics of the conventional constant current source 1 shown in FIG. A diagram showing the output characteristics of the constant current device 4 of one embodiment,
FIG. 7 is a diagram showing the output characteristics of the constant current source 1 according to an embodiment of the present invention shown in FIG. DESCRIPTION OF SYMBOLS 1... Constant current source, 2... Load, 3... Constant current device, 4... Constant current device, Rl, R2... Voltage divider, RV
... Impedance element, r,, r2, r3... Resistor, Q... Error amplifier, Pc i... Photocoupler, Vs... Reference voltage.
Claims (1)
、該分圧器で検出された出力電圧信号と基準電圧を比較
増幅する誤差増幅器を備え、前記定電流源の負荷が定格
最大以上となった場合に前記インピーダンス素子のイン
ピーダンスを制御スることにより、前記定電流源の出力
電圧を制限させる定電流装置の出力電圧制限回路におい
て、該定電流装置からの出力電流を検出する検出手段と
、該検出手段による前記出力電流低下の検出に応答して
前記出力電圧信号を変化させる手段とを備えたことを特
徴とする定電流装置の出力電圧制限回路。An impedance element and a voltage divider are connected in parallel to a constant current source, and an error amplifier is provided to compare and amplify the output voltage signal detected by the voltage divider and a reference voltage, and when the load of the constant current source exceeds the maximum rating. In the output voltage limiting circuit of a constant current device that limits the output voltage of the constant current source by controlling the impedance of the impedance element, the output voltage limiting circuit includes: a detection means for detecting an output current from the constant current device; An output voltage limiting circuit for a constant current device, comprising means for changing the output voltage signal in response to detection of the output current drop by a detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8397884U JPS61614U (en) | 1984-06-06 | 1984-06-06 | Output voltage limit circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8397884U JPS61614U (en) | 1984-06-06 | 1984-06-06 | Output voltage limit circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61614U true JPS61614U (en) | 1986-01-06 |
| JPH0524972Y2 JPH0524972Y2 (en) | 1993-06-24 |
Family
ID=30633092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8397884U Granted JPS61614U (en) | 1984-06-06 | 1984-06-06 | Output voltage limit circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61614U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63178308A (en) * | 1987-01-20 | 1988-07-22 | Origin Electric Co Ltd | Constant current power supply circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677919U (en) * | 1979-11-13 | 1981-06-24 | ||
| JPS573116A (en) * | 1980-06-06 | 1982-01-08 | Nec Corp | Converter |
-
1984
- 1984-06-06 JP JP8397884U patent/JPS61614U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677919U (en) * | 1979-11-13 | 1981-06-24 | ||
| JPS573116A (en) * | 1980-06-06 | 1982-01-08 | Nec Corp | Converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63178308A (en) * | 1987-01-20 | 1988-07-22 | Origin Electric Co Ltd | Constant current power supply circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0524972Y2 (en) | 1993-06-24 |
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